PU505: Health Behavior Unit 5 Health Belief Model Flashcards

1
Q

What is the essence sentence of the health belief model?

A

Personal beliefs influence health behavior

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2
Q

What are the constructs of the health belief model? (7)

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Perceived:
- Susceptibility - personal belief about the chances of getting the disease
- Benefits - personal belief about whether the new behavior is better than what is already being done
- Seriousness - personal belief about the severity of the disease

  • Modifying variables - personal factors that affect whether the new behavior is adopted
  • Cues to action - factors that start a person on the way to changing a behavior
  • Self-efficacy - personal belief in one’s own ability to successfully do something
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3
Q

What is the short and sweet why HBM was developed?

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In the 1950s, public health practitioners wanted to know why people were not entering screening programs for disease prevention and early detection of TB.

The outcome of the study identified three sets of factors that determined participation in a voluntary screening program: psychological readiness, situational influences, and environmental conditions (Rosenstock, 1958).

Factors identified as being indicative of people’s psychological readiness to be screened for TB included the belief that they had TB, were at risk of getting TB, or that they would benefit from being tested for TB.

Situational influences included having bodily changes thought to be symptoms of TB, other people’s opinions of whether they should or shouldn’t be screened, and lastly, if environmental conditions provided an opportunity to be screened, and if it was convenient (Rosenstock, 1958).

The conclusions drawn from this study formed the basis of the HBM.

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4
Q

What is the theoretical concept of the HBM?

A

Personal perception is influenced by the whole range of intrapersonal factors affecting health behavior, including, but not limited to knowledge, attitudes, beliefs, experiences, skills, culture, and religion.

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5
Q

For HBM, what are the four constructs, either individually or in combination, that can be used to explain health behavior?

A

Perceived susceptibility, perceived seriousness, perceived benefits, and perceived barriers.

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6
Q

What is a personal belief of the chance of getting a disease?

A

Perceived susceptibility.

It’s a perception of risk, rather than the actual risk, that is tied to the likelihood of engaging in risk reducing behaviors.

Risk perception and actual risk are rarely the same. For example, in Scandinavia, the incidence of Lyme disease is increasing. Because it’s a relatively new disease in many areas, involuntarily contracted, difficult to control, and has potentially devastating consequences, people perceive they have a 20% risk of developing it after a tick bite. In actuality, the risk of disease is about 2% (Slunge et al., 2019).

In this situation, if overestimation of risk results in adoption of and adherence to risk reducing behaviors, such as avoiding tall grasses, using tick repellant, wearing light colored clothing, this is a welcome outcome. However, overestimation of risk could just as easily result in people reducing the time they spend outdoors in nature or engaged in activity. Underestimation can be equally as concerning, as it can reduce the likelihood of adopting risk reducing behaviors (Slunge et al., 2019). Another example of risk perception and actual risk being miles apart is what a study of more than 4,000 people in the United States revealed. In this case, people at high risk for diabetes, breast cancer, and colorectal cancer underestimated their risk of developing these diseases up to 75% of the time and those at low risk overestimated their risk up to 40% of the time (Brawarsky et al., 2018).

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7
Q

Risk perception, within the construct of perceived susceptibility, is influenced by factors such as? (9) (Harvard Mental Health Letter, 2011; Ropeik, 2002)

Examples of these influences -

Early in the HIV epidemic, Asian American college students tended to view the epidemic as a non-Asian problem. As a result, their perception of susceptibility to HIV infection was low and so was their practicing of safer sex behaviors (Yep, 1993).

Similarly, adolescents and young adults in Canada perceived their risk of contracting COVID-19 as being lower than that of their family and friends. When a large sample of 14 to 22-year-olds were asked to assess their risk of contracting COVID-19, they perceived their risk as 5.6 on a 10-point scale and their family and friends’ risk at 8.2. However, in contrast to the low perceived risk of HIV resulting in a low adoption rate of preventative behaviors discussed previously, the majority of the Canadian adolescents and young adults reported adhering to COVID-19 preventative measures (Yang et al., 2020).

In an international study involving more than 6000 people from 10 countries, the perception of susceptibility to COVID-19 was associated with the adoption of preventative behaviors. Risk perception was measured by questions that addressed the extent of worry about coronavirus, the likelihood of contacting the virus, or of family or friends contracting it, and the seriousness of the virus. The responses showed a high perception of risk that was related to an equally as high adherence to the preventative behaviors of handwashing, mask wearing, and social distancing (Dryhurst et al., 2020).

However, sometimes the relationship between risk perception and adoption of preventive behaviors does not hold true as was the situation at the end of the first month of the COVID-19 pandemic in the United States in March 2020. A national survey conducted at the time of more than 700 adults found that although they perceived a 30% to more than 40% chance of contracting COVID-19 during the next month, 35% reported they did not follow social distancing recommendations (Masters et al., 2020).

A

Trust - When people trust the source providing information about a risky situation, they tend to be less afraid. When they have less trust in the information source, they tend to be more afraid of the risk situation.

For example, information about a cancer prognosis is less frightening when it comes from an oncologist rather than from someone at a bar.

Risk Origin - When people are involuntarily exposed to a risk, they are much more afraid of the consequences than when they voluntarily expose themselves to the risk.

For example, people are less afraid of driving while texting than they are of driving next to someone who is driving while texting.

Control - When people feel they are in control of a risk situation, they are much less afraid of the outcomes than when they don’t feel they are in control.

For example, people are less afraid of the consequences of driving than they are of flying even though car accidents cause thousands of deaths a year compared to plane crashes.

Cause - People are less fearful of a risk situation in nature, such as sun exposure than a human-made hazards such as a nuclear power accidents.

Scope of Consequences - Events capable of killing many people violently, suddenly, and at the same time are more frightening than chronic health conditions that may kill the same number of people but over a longer period of time.

For example, the consequences of a tsunami are perceived as being more frightening than the consequences of heart disease.

Dread - The more dire or worse the consequences of a risk, the greater the fear. For example, the risk of being eaten alive by a shark or drowning lead to a greater perception of risk.

Seeing and Understanding - People tend to perceive a greater risk from things they don’t understand or can’t see more than those they do understand or can see.

Familiarity - People perceive new risks as more dangerous than familiar ones. For example. the risk of the flu is perceived as less dangerous than the risk of COVID-19.

Age - The younger the possible victims of the risk situation, the greater the perception of risk. For example, asbestos in a school is more feared than asbestos in a factory.

Media Awareness - When there is extensive media coverage of a situation, the perception of personal risk increases.

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8
Q

More underestimating and overestimating risk

Pregnancy is another example of the consequences of underestimating risk. When 237 Vietnamese women were asked about their perceived risk of unintended pregnancy, 68% rated their risk as highly unlikely, although the majority of them relied on male condoms for contraception (Londeree et al., 2020), which have a use failure rate of 15% (Planned Parenthood, 2021). Interestingly, the women most concerned about becoming pregnant were the ones who underestimated their risk the most (Londeree et al., 2020).

The underestimation of susceptibility to sexually transmitted infections (STIs) or unrealistic optimism is fairly common among older adults (Ferrer & Klein, 2015). This is particularly concerning since the rates of STIs among adults 55–64 years old in the United States increased substantially between 2014 and 2018. Chlamydia rates rose overall from 16.3 cases per 100,000 in 2014 to 29.9 per 100,000, with the rate among men more than doubling from 20 per 100,000 to 41.8. Gonorrhea rates also more than doubled during this time from 11.4 per 100,000 in 2014 to 28.8 in 2018, with the rates among men increasing from 20 to 51.3 (Centers for Disease Control and Prevention [CDC], 2019a). Despite this, older adults generally don’t see themselves as being at risk of STIs, and consequently they tend not to use condoms for vaginal or oral sex or get tested for STIs (Syme et al., 2017).

A

When those at low risk of developing a chronic disease overestimate their risk and adopt risk reducing behaviors, it’s not a bad thing. For example, when people of average weight overestimate their risk of developing diabetes and adopt a more plant-based diet and eliminate highly processed foods, it not only keeps their risk of diabetes low, it lowers their risk of cardiovascular disease and cancer as well. However, when people at high risk underestimate their risk, it’s concerning because a more accurate assessment of susceptibility is needed for the adoption of health promoting lifestyle behaviors and adherence to medication treatments (Cainzos-Achirica & Blaha, 2015).

This was the situation found among women in Saudi Arabia regarding their cardiovascular disease risk factors, in particular obesity, physical inactivity, and smoking. Over a 10-year period, obesity rates among Saudi women almost doubled, increasing from 23.6% to 44%, self-reported physical inactivity increased from 88% to 98%, and smoking increased from less than 1% to almost 8% (AlQuaiz et al., 2014).

When almost 400 female teachers from 10 different schools in the Saudi capital of Riyadh were surveyed about their perception of susceptibility to cardiovascular disease, results showed that 76% were inactive, 54% obese, and 44% had a family history of heart disease. However, only 13% of those who were inactive, 17% of those who were obese, and 21% of those with a family history of heart disease perceived themselves to be at risk of cardiovascular disease. Stated another way, 87% of the inactive women, 83% of the obese women, and 79% of those with a family history did not believe they were at risk of cardiovascular disease although they were. Consequently, the underestimation of their susceptibility to heart disease did not support their likely adoption of healthier behaviors (Al-Tamimi & Bawazir, 2020) which underscores the reality that until women believe they are at risk of heart disease, efforts to change their behavior will continue to be hampered (Robertson, 2001)

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9
Q

What can the construct of perceived seriousness be based upon in an individual’s life?

A

For some people, the perception of seriousness is based on medical information or knowledge; for others it’s based on how the disease might affect their families, jobs, or other aspects of their lives (Rosenstock, 1974).

The construct of perceived seriousness or severity speaks to individuals’ beliefs about the gravity of possible consequences of a disease as they pertain to some aspect of their lives, the basis of which varies from person to person.

As an example, many people perceive seasonal flu as a relatively minor annoyance. You get it, stay home from work or school for a few days, and get better. However, if you have a chronic respiratory disease such as asthma or bronchitis, contracting the flu could land you in the hospital. In this case, the flu might be perceived as a much more serious disease. In the case of a self-employed or gig worker, having the flu might mean a week or more of lost wages, which would color the person’s perception of its severity.

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10
Q

Perceived seriousness construct examples

In Beijing, the perception of flu severity impacts vaccination rates. People who perceive the flu to be a serious disease are more likely to be vaccinated than those who do not (Wu et al., 2017). Similarly in Australia, people who perceive the flu to be very severe—that is, they rate it between 7 and 10 on a 10-point scale—are significantly more likely to be vaccinated than those who perceive it to be less severe (Trent et al., 2021).

The perception of the severity of lung cancer among current and former smokers attending outpatient clinics in Australia was a driving factor in their preference to undergo screening with low dose computed tomography (low dose CT scan) (See et al., 2020). Interestingly, although the perception of lung cancer severity motivates people to be screened, screening may actually lower their motivation to quit smoking. This can happen if people interpret screening as a preventative action against lung cancer in that it will catch it early before significant treatment is needed, or if they interpret a negative screening as an indication of being a “lucky one” who can smoke and not suffer detrimental effects (Zelidat et al., 2015).

The perceived seriousness of lead contamination among residents in three communities near or in a superfund site in northern Idaho was associated with their intention to adopt lead poisoning prevention behaviors. The greater the residents’ perceived seriousness of lead contamination, the greater their intention to promptly remove dirt from clothes, pets, cars, and toys after spending time outdoors, wash hands with clear water before eating, drinking, or after being outdoors, and use a blanket or other protective barrier when sitting on a sandy beach (Cooper et al., 2020).

A

The high incidence of cervical cancer among women in Nigeria coupled with the limited capacity to treat advance disease are significant issues that could be improved by increasing cervical cancer screening. To this end, more than 1,000 women living in a large, diverse city were surveyed about their perception of the seriousness of cervical cancer and their screening history, among other factors (Ilevbare et al., 2020).

The results showed that perception of seriousness influenced screening behavior. Women who perceived cervical cancer as less serious were 41% less likely to have been screened than were women who perceived it as highly serious. These results suggested a need for educational programming focused on correcting misconceptions about the consequences of untreated cervical cancer (Ilevbare et al., 2020) and the important role screening plays in its early diagnosis.

Perceived seriousness is also a factor in colorectal cancer screening in the Netherlands, as an online survey of more than 1,600 adults found. In this example, perceived severity was determined by the extent to which survey participants agreed with the following statements: Cancer is very serious, cancer has major consequences, cancer is very treatable, cancer means the end of your life, cancer is impossible to prevent, and cancer is more serious than any other disease (Douma et al., 2018).

The survey results showed that almost all respondents totally agreed with the statements about the severity of colorectal cancer, deeming it a very serious disease. In addition, the perception of seriousness was related to their positive attitude toward preventive screenings, which was not surprising given that there is a 73% participation rate in the government-sponsored colorectal screening program (Douma et al., 2018).

As the previous examples show, perception of seriousness can and does influence health behavior. Usually, the more severe or serious a disease is perceived to be, the more likely it is that people will take action to prevent it.

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11
Q

What is a combination, and also a construct within HBM, of perceived susceptibility to a disease and perceived severity of the disease?

A

Perceived threat.

When people believe they are susceptible to a serious disease, it’s likely their behavior will change. However, if they believe they are susceptible to a nonserious or mild disease, or they believe they are not susceptible to a serious disease, then it’s unlikely their behavior will change (Skinner et al., 2015).

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12
Q

Information on perceived threat construct

An example of how the perception of disease threat relates to the adoption of health-promoting behaviors occurs during the annual Hajj. Hajj is the Muslim religious pilgrimage to Mecca, Saudi Arabia. Considered the pinnacle of the Islamic faith, it is undertaken at least once in a Muslim’s lifetime (Embassy of the Kingdom of Saudi Arabia, n.d.). The challenges of safeguarding the health of more than 2 million Muslims each year during the Hajj are substantial, given that social distancing and contact avoidance are difficult, if not impossible, with the sheer number of people attending and the various rituals required of them each day (Taibah et al., 2020).

The threats to the health of Hajj attendees include heat stroke, diarrhea, vomiting, pre-existing conditions, and epidemics. In an effort to prevent these health problems, local governments in host countries use education and information campaigns to encourage Hajj pilgrims to adopt health-promoting behaviors. These include bringing medication from home, being vaccinated prior to traveling, maintaining personal hygiene, using hand sanitizer, and washing hands (Taibah et al., 2020).

Of the health issues facing the Hajj pilgrims in 2017, they identified heat stroke as the greatest perceived threat. This is not surprising since Hajj took place between August 30 and September 4, when daytime temperatures in Saudi Arabia were as high as 110°F (43°C) (Taibah et al., 2020).

The perception of threat of heatstroke and complications from preexisting conditions were strongly related to people maintaining personal hygiene and washing their hands. The perceived threats from vomiting, diarrhea, preexisting conditions, and epidemic outbreaks was strongly related to people bringing medication from home and getting vaccinated prior to traveling (Taibah et al., 2020). In this situation, the perception of threat was directly related to the adoption of preventative health behaviors.

Low threat perception exacerbated a problem with leptospirosis in Malaysia. Leptospirosis is a bacterial infection that’s spread to people through the urine of infected animals, both domestic and wild, including rodents, dogs, horses, and cattle. Untreated in humans, it can lead to kidney damage, meningitis, liver failure, and in some cases, death (CDC, 2019b). It emerged as a public health concern in Malaysia in 2015 with an incidence rate of 30.2 per 100,000 (Sukeri et al., 2020) compared to a worldwide rate of 14.77 per 100,000 (Costa et al., 2015). The areas with the greatest problems were facing waste management issues and rising rodent populations from rapid urbanization (Sukeri et al., 2020).

Although people living in these areas perceived leptospirosis to be a serious or very disease most importantly because of the risk of death, their perception of susceptibility was underestimated. Most did not believe they were at risk of contracting it (Sukeri et al., 2020) even though they lived in areas where disease rates and risks factors were high.

A plausible explanation is that a lack of knowledge contributed to the low perceived susceptibility and, in turn, a low perception of threat. Although perception of severity was high, it wasn’t enough on its own to influence preventative health behaviors (Sukeri et al., 2020).

A similar situation was found in Singapore. Even though people perceive dengue fever to be a serious illness, vaccination rates remain low. A possible explanation for this is that while the perception of seriousness is high, the perception of susceptibility is low (Panchapakesan et al., 2018).

A

In Iran, perception of threat of hepatitis B is predictive of Iranian healthcare workers hepatitis B vaccination status. Contracting hepatitis B virus is the most common occupational hazard for healthcare workers in Iran with incidence rates of up to 10 times that of the general public. Vaccination of high-risk groups, which include healthcare workers, began in 1993 (Alavijeh et al., 2019). Despite this initiative, the results of a 2015 study found rates of vaccination among this group as low as 53% in some areas of the country (Sayehmiri et al., 2015). In an effort to increase vaccination rates specifically among the nurses, it was important to first identify the ways in which vaccinated and unvaccinated nurses differed (Alavijeh et al., 2019).

As it turned out, vaccinated nurses were more likely female, had family or friends with a history of hepatitis B, and importantly, perceived hepatitis B to be a greater threat than did the unvaccinated nurses. Based on this, it seemed reasonable to assume that if the nurses’ perception of hepatitis B threat was increased, their vaccination rates would also increase (Alavijeh et al., 2019).

A troubling behavior among Korean high school students is the use of highly caffeinated drinks to stay awake while studying for exams, in an effort to increase academic achievement and earn admission to prestigious universities. Unfortunately, these drinks come with unwanted side effects. In excessive amounts, they can result in irritability, anxiety, depression, sleeplessness, and elevated blood pressure, among other physical and psychological problems. To address this issue, it was first necessary to identify factors associated with their use (Ha et al., 2017).

Data were gathered from more than 800 high school students about their perceived threat from drinking highly caffeinated drinks. Threat perception was determined by assessing the students’ perception of susceptibility to the health problems, diseases, and injuries that can result from consuming highly caffeinated drinks and their perceptions of seriousness by assessing the extent to which they believed the effects of consuming these drinks were severe or minor (Ha et al., 2017).

The more susceptible students believed they were to the negative effects of consuming highly caffeinated drinks, the less they used them. Similarly, the more serious students perceived the effects of consumption, the less they used them. Students who perceived these drinks to be a greater threat, were less likely to use them.

However, 54% of students who used these drinks did not perceive them to be a health threat (Ha et al., 2017). The perception of low threat resulted in the continued unhealthy behavior of consuming these drinks. What’s interesting is that 28% of the students who drank these beverages believed they were a severe health threat (Ha et al., 2017). Perhaps they drank them because even though they were at some risk of the negative effect, based on their experience, they were not at great enough risk of the negative effects to stop.

Hayden, Joanna. Introduction to Health Behavior Theory (p. 168). Jones & Bartlett Learning. Kindle Edition.

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13
Q

What construct within HBM revolves around the idea that a person’s opinion of how useful or valuable a new behavior is, how much good it would do in decreasing the risk of developing a disease or an illness?

A

Perceived benefits.

Would people strive to exercise if they didn’t believe it was beneficial? Would people quit smoking if they didn’t believe it was better for their health? Would people use sunscreen if they didn’t believe it worked? Probably not.

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14
Q

Perceived benefits construct information

Over a 10-year period in Saudi Arabia, the obesity rates among women increased from 24% to 44%, and inactivity from 85% to 98%, putting them at higher risk for cardiovascular disease. In an effort to address this, researchers examined the health beliefs and health-promoting behaviors related to cardiovascular disease among female teachers in the capital city of Riyadh (Al-Tamimi & Bawazir, 2020).

The results of this inquiry showed that 98% of the teachers scored high on perceived benefits of adopting heart healthy behaviors and were 26 times more likely to adopt them than were those with low perceived benefits scores. Interestingly, although 94% of the teachers perceived physical activity as beneficial for the prevention of heart disease, only 24% participated in physical activity on a regularly basis (Al-Tamimi & Bawazir, 2020).

Self-care behaviors are key to the control of high blood pressure. These behaviors include taking medication as prescribed and making lifestyle modification such as a low sodium diet, regular physical activity, weight management, smoking cessation, stress reduction, and regular blood pressure monitoring. However, in China adherence to these is abysmal among young and middle-aged adults (Ma, 2018).

In an effort to change this situation through health education programing, a study of more than 300 people was conducted to identify factors related to the self-care behaviors. The results showed perceived benefit is the strongest predictor of medication adherence from among all the constructs of the health belief model (Ma, 2018). Given these results, a health education program focused on the benefits of taking medication as prescribed to control high blood pressure seems appropriate.

In earthquake prone areas, earthquake preparedness is key to saving lives when these unexpected disasters hit, often with little to no warning. While it’s logical to assume people living in these areas would be prepared, they aren’t always, as is the case in Iran.

Iran’s geographic location puts more than 70% of its major cities at risk of substantial damage from an earthquake. This statistic alone is alarming, but even more so considering that the populations in these areas are ill-prepared for such a disaster (Rostami-Moez et al., 2020).

Earthquake preparedness entails knowing first aid and having a first aid kit, having a flashlight, extra clothes and blankets, plastic bags and toilet paper (for a make-shift emergency toilet), and fire insurance. Before making any attempts to increase preparedness, it was first necessary to understand why people weren’t prepared and to identify factors that could predict preparedness (Rostami-Moez et al., 2020).

To this end, 1,000 people living in nine counties in the western part of the country were surveyed. Data were collected about their preparedness knowledge and behaviors, their perceptions of the seriousness and severity of an earthquake, the benefits of and barriers to preparing for such an event, cues to action, and the extent of their self-efficacy (Rostami-Moez et al., 2020).

The results showed that households were about 30% prepared. Of all the constructs of the HBM measured, perceived benefits, cues to action and self-efficacy were significantly associated with, and predictive of, preparedness. preparedness. It’s possible that when people are aware of the benefits of earthquake preparedness, feel confident in their ability to prepare, and have external prompts from friends, family, and the media, they are more likely to prepare. Knowing this provided a basis for the design and implementation of educational programs to improve earthquake preparedness among people living in at risk areas (Rostami-Moez et al., 2020).

A

During the COVID-19 pandemic, it was imperative for countries around the world to reduce the strain on their healthcare systems and slow the spread of the virus. Citizen compliance with public health recommendations was key to this. However, compliance with risk-reducing behaviors, such as social distancing and home quarantining, were difficult to enforce, especially in democratic countries (Clark et al., 2020).

Because of the importance of getting people to voluntarily comply with the public health recommendations, it was necessary to identify the beliefs or perceptions related to compliance. To this end, more than 8,000 people from 70 different countries were surveyed (Clark et al., 2020).

The beliefs associated with the intention to comply with the public health recommendations were determined by the extent to which survey participants agreed with statements that reflected their perception of the benefits of complying. They included that avoiding crowds is effective for avoiding COVID-19, staying home is effective, social distancing is effective, frequent handwashing is effective, and wearing a mask is effective for avoiding COVID-19 (Clark et al., 2020).

The extent of agreement with the following statements measured perceived susceptibility: I am less likely to get COVID-19 than most people, I am not at risk, my body could fight it off, people like me don’t get it, there is little chance of me getting it or spreading it from what I do. Perceived seriousness was measured by the extent of agreement with the following statements: having COVID-19 would be disruptive to my life, my physical health, and my social life (Clark et al., 2020).

The results of the survey showed that agreement with the statements about the benefits of the recommendations and being concerned about ones’ health were predictive of compliance with the public health recommendations. Although one would expect perceived seriousness and susceptibility of COVID-19 to have influenced compliance with preventative measures, they did not (Clark et al., 2020).

The practical application of knowing this information lies in its usefulness in developing programs. Clearly from these results, programs should focus on the benefits of the risk-reducing behaviors rather than the risk of contracting COVID-19 or its severity (Clark et al., 2020).

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15
Q

Even when change is perceived as beneficial, what construct of the HBM addresses the issue when change does not happen and the obstacles a person believes is stopping them from taking a recommended action? (Rosenstock, 1974).

A

Perceived barriers.

It is the most significant construct in behavior change (Janz & Becker, 1984).

When individuals believe obstacles are stopping them from changing their behavior, this not only negatively impacts their personal health, but it can and does impact the public’s health, as well. This is the situation with avian influenza in Bangladesh. See information on perceived barriers.

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16
Q

Information on perceived barriers

Avian influenza is a highly infectious viral disease that affects birds used for food, such as chicken, turkey, and quail, as well as wild and pet birds, and sometimes people. In 2003–2004, the disease spread across Asia, Europe, and Africa, causing widespread infection and death in birds flocks and hundreds of human infections and a number of deaths. Getting it under control required the destruction of hundreds of millions of poultry. Although its rampant spread was controlled, the virus remains in circulation around the globe and with it the constant fear of a mutation that would trigger a pandemic (World Organization for Animal Health, 2021a).

Eliminating the avian flu virus requires implementation of strict biosecurity measures. These measures include keeping domestic poultry away from areas where there are wild birds, eliminate things that would attract wild birds, strictly limiting access to flocks by people, vehicles, and equipment, properly sanitizing poultry houses and equipment, avoiding the introduction of birds with unknown disease status into a flock, proper disposal of manure, litter, and dead animals, vaccinating animals where appropriate (World Organization for Animal Health, 2021b), and wearing protective gear while handling poultry (Das Gupta et al., 2020).

When 363 chicken farmers representing all three types were surveyed, almost all (more than 96%) were confident in their ability (self-efficacy) to implement the protective measures. However, 33% of the backyard farmers perceived face coverings interfering with their work as a barrier to their use and perceived having other things to do as a barrier for handwashing. Conversely, approximately 7% of the commercial chicken farmers perceived face coverings interfering with work as a barrier to their use, and 12% of the commercial egg producers perceived having other things to do as a barrier for handwashing (Das Guta et al., 2020).

Although perceived barriers were found to have the greatest influence on implementing biosecurity measures among all farmers, they were most pronounced among backyard farmers. With this information, programs can be tailored to help backyard farmers overcome the barriers and increase adherence to biosecurity measures (Das Gupta et al., 2020).

  • New Example -

Addressing perceived barriers is key in managing weight gain among freshman college students. So common is weight gain among this group in the United States that it’s referred to as the “freshman 15,” although on average students gain half that amount (7.5 pounds) (Vadeboncoeur et al., 2015). Knowing factors that predict weigh gain among these students would be helpful in developing programs to prevent or at least minimize it.

To flush these out, first-year students at a private college in the northeast United States were surveyed to determine their nutrition knowledge, physical activity knowledge, intention to engage in physical activity, stress management skills, and perception of barriers to engaging in physical activity and eating a healthy diet. Perceived barriers were assessed by the extent of their agreement with the following statements: I have no time, motivation, or interest in exercising or the ability to plan to an exercise program, the weather is too bad to exercise, I feel uncomfortable exercising in a gym, I eat too much junk food, I have no time to eat healthy, I eat late at night, I eat to manage stress, I skip meals, I lack nutrition knowledge, and there are no healthy snacks available on campus (Yan & Harrington, 2020).

The survey results showed that just over 30% of the students gained 3% or more of their body weight, while 49% maintained their weight, and 20% lost 3% or more of their body weight in the 3 months between October and January. The weight gain group agreed more strongly that they were not motivated to exercise than the weight neutral group and that the weather prohibited them from exercising. The weight gain group also agreed more strongly than the weight neutral group that they had no time to eat and that the campus lacked healthy food options (Yan & Harrington, 2020).

The results of this survey found perceived barriers to exercise and healthy eating, both personal and environmental, to be the greatest predictors of weight gain. Personal barriers to exercise included lack of motivation and lack of time. Environmental barriers to exercise and healthy eating included weather and lack of healthy food options. While these point to the importance of addressing environmental barriers as a means of tackling weight gain among freshman, perhaps more important is the need to teach students how to overcome environmental barriers and motivate them to do so (Yan & Harrington, 2020).

Hayden, Joanna. Introduction to Health Behavior Theory (pp. 177-178). Jones & Bartlett Learning. Kindle Edition.

A

Another example of how perceived barriers influence behavior is seen with another animal-to-human virus, rabies. The rabies virus is transmitted through the bite or a scratch from an infected animal. Once in the body, it travels to the brain and ultimately causes death (CDC, 2020a).

Rabies is extremely rare in the United States. Thanks to vaccination, animal control and outreach programs, and treatment, the number of infections has steadily decline to between one to three cases a year, with a total of 18 infections contracted in the country between 2009 and 2018 (CDC, 2020b). Unfortunately, this is not the case in all countries. In fact, worldwide, rabies causes about 60,000 deaths per year with 99% of them the result of exposure to rabid dogs (CDC, 2020c). Consequently, dog vaccination is key to rabies control (World Health Organization [WHO], 2021).

However, many countries lack official dog vaccination programs. One such country is Ethiopia were an estimated 2,700 rabies deaths occur per year, one of the highest rates in the world (CDC, 2017). Although veterinary services are available in urban areas, only about 20% of the dogs are vaccinated. In rural areas, where veterinary services are generally not available, rabies vaccination is nonexistent (Beyene et al., 2018).

The first step taken to rectify this situation was to identify factors that influence the rabies vaccination intentions of the dog owners in urban areas where vaccination is available. This information could then be used to inform policy decisions around mass vaccination (Beyene et al., 2018).

To find this out, 249 dog owners in an urban area in central Ethiopia were surveyed about their intention to vaccinate their dogs and factors influencing their intention. These factors included perceived threat, benefits, barriers, and self-efficacy. Perception of threat was assessed by asking how likely they thought it was their dog or a neighbor’s dog would get rabies in the future and the likelihood of it being serious if this happened. Perceived benefits were assessed by asking the extent of their agreement with statements such as getting my dog vaccinated will decrease the chances that I/my family/my neighbor will get rabies. Perceived barriers were identified by asking for the extent of their agreement with statements that addressed ease of transporting and handling their pets, distance to the vaccination center, cost of the vaccination, and trust in the vaccine. Self-efficacy or the owners’ perceived ability to get their dogs vaccinated was measured by the extent to which they agreed with statements related to knowing where and when to get the dogs vaccinated (Beyene et al., 2018).

Of the health belief model constructs measured, only two of the perceived barriers measured were related to the dog owners’ intention to vaccinate their pets: ease of transporting their dogs and distance from the vaccination center. Consequently, locating vaccination centers closer to areas with a large dog ownership and facilitating transportation to vaccination sites are measures that would likely increase vaccination rates (Beyene et al., 2018).

  • New Example -

Similarly, there was a need to understand the barriers to physical activity among office workers as a prerequisite to developing programs aimed at reducing sedentary behavior. The importance of this lies in the fact that office workers spend about two-thirds of their day sitting (Parry & Straker, 2013) and that there is a dose relationship between sitting time and increased risk of cardiovascular disease, cancer, and premature death (Zhao et al., 2020). The longer someone sits, the greater the health risk. One way to counteract this is to stand.

Before developing a program to remedy this issue in Sweden, it was necessary to understand the most common perceived barriers office workers have to standing. To ascertain this information, a group of more than 500 office workers completed a questionnaire asking for their “yes” or “no” responses as to whether statements about standing while working applied to them. These statements included that standing makes me embarrassed, doesn’t fit in the work culture, disturbs others, reduces work performance, is tiring, is uncomfortable, is perceived as aggressive, and I can’t stand because of health reasons, I exercise enough, I never thought about standing, I have no motivation to stand, and sitting is a habit (Nooijen et al., 2018).

The results showed that the majority (67%) of the office workers responded “yes” to the statement that sitting was a habit, 29% that standing is uncomfortable, and 24% that standing is tiring (Nooijen et al., 2018). Consequently, any change implemented to reduce sitting time had to take into consideration the perceived barrier of sitting as a habit. The changes office workers were most open to included standing or walking during meetings rather than sitting and getting reminders for taking breaks (Nooijen et al., 2018).

Not surprising, some barriers are easier to address than others. For instance, college students’ fear of being disconnected from friends for even a short time is a significant barrier to the prevention of texting while driving. If a friend texts, it can’t be ignored even if you’re driving (Watters & Beck, 2016). While overcoming this barrier is much more difficult and entails changing social norms, knowing that this is the barrier means prevention programs focused on the serious consequences of texting while driving may not be effective because they don’t address the underlying barrier—fear of being disconnected from friends.

Hayden, Joanna. Introduction to Health Behavior Theory (p. 179). Jones & Bartlett Learning. Kindle Edition.

17
Q

What are factors that alter or affect a person’s perceived benefit of a prevention behavior?

How are they grouped?

A

Modifying variables

Demographics - age, sex, marital status, etc

Sociopsychological - peer group, social class, personality, etc

Structural - knowledge, past experience, etc

18
Q

Information on Modifying Variables

In 2006, the first vaccine for the prevention of human papilloma virus (HPV) was approved in the United States with administration intended for girls and young women between the ages of 9 and 26 (Food and Drug Administration [FDA], 2009). Since that time, in addition to perceived beliefs about the benefits, risks, seriousness, and barriers related to HPV vaccination, modifying variables of demographic and economic factors, and knowledge have also been found related to vaccination behavior. In Sweden, for example, a girl whose mother is highly educated and from a European background is more likely to be vaccinated than a girl whose mothers is from a non-European country and less educated. In Thailand, parents who are more knowledgeable about HPV perceive their daughters to be at higher risk of contracting the virus, perceive more benefits to vaccination, and perceive it to be more severe than do parents who are less knowledgeable. Similarly, the more important religion is to parents, the greater they perceive the risk to be of their children contracting HPV, and the greater their perception of vaccination benefits (Grandhal et al., 2017).

  • New Example -

Modifying variables are important to the perceived benefits of adhering to appointments for preventive care in sickle cell disease. Sickle cell disease is an inherited blood disorder that results in the production of abnormally shaped sickled or half-moon red blood cells rather than normally shaped round cells. Sickled red blood cells are hard, inflexible, and sticky, which causes them to clump together and interrupt blood flow. Preventive care, including adherence to medical appointments, is critical to reducing the chances of complications such as vision loss, infection, leg ulcers, and pain (CDC, 2020d).

Through a survey of more than 500 clinic patients (or caregivers in the case of children) at three sites in the Midwestern United States, data on age, sex, race, ethnicity, education level, financial difficulties, marital status, and missed appointments were collected. In addition, data were also collected on the known modifying variables of social supports, depression, health literacy, and spirituality (Cronin et al., 2018).

The results revealed financial insecurity, health literacy, and spirituality as the variables modifying the perceived benefits of keeping appointments. Adult patients and the caregivers of young patients reported having difficulty paying their monthly bills, being less spiritual, and having greater health literacy—that is, they had greater confidence in their ability to complete medical forms without help, read health related materials, understand written information, and learn about sickle cell disease (Cronin et al., 2018) on their own.

Hayden, Joanna. Introduction to Health Behavior Theory (pp. 180-181). Jones & Bartlett Learning. Kindle Edition.

A

Ethnicity and culture modify the perception of benefits of HIV preventative behaviors. In Northern Malawi, for instance, ones’ ancestors are believed to be the cause of disease (Sano et al., 2016). Consequently, there is no benefit in adopting the HIV/AIDS prevention behaviors of abstinence, being faithful, and condom use (ABC).

Among some ethnic groups in Kenya and Ghana, HIV is thought to be contracted by touching an infected person or through a mosquito bite (Tenkorang, 2013), again negating the benefits of ABC as useful for preventing HIV infection.

Among women in Indonesia, age, educational level and family history are modifying variables for breast self-exam (BSE). Women who are older, highly educated, and have family members with cancer are more likely to perform BSE, possibly because they are more knowledgeable about and aware of the benefits of early detection (Dewi et al., 2019).

Among Hispanic women in the United States, age, marital status, income level, and access to a regular source of healthcare influence perception about cervical cancer and benefits of pap smears. Those with higher incomes and regular health care are more likely to have cervical cancer screening (de Peralta et al., 2015).

An interesting yet little studied modifying variable is superstition. Superstition is the belief that sometimes things happen that cannot be explained by reason or science (Oxford Learner’s Dictionaries, 2020) but rather are explained by mysterious “other” forces. A prime example of a superstition is avoiding the number 13 to prevent bad luck from happening. This is so pervasive around the world that planes usually don’t have a 13th aisle, nor do airports have a 13th gate or do more than 80% of high-rise buildings across the globe have a 13th floor. Even hospitals avoid having rooms with the number 13 (Sandoiu, 2019).

Superstitions have been identified as possible contributing factors to preventative health behaviors. To determine their influence on flu vaccination intention, a survey of more than 600 people was conducted in Singapore. The results showed that the more superstitious people were—that is, the greater the extent of their agreement with the following statements: “4” is an unlucky number (common superstition in Singapore), breaking plates brings bad luck, sleeping in a bed that faces a mirror will cause your soul to leave your body—the stronger their agreement with the barriers to vaccination. The barriers measured included that the vaccine causes the flu, does more harm than good, causes worrisome side effects, and is not needed (Lu et al., 2019).

Given that perceived barriers are the strongest predictors of behavior, a strong association between superstitious beliefs and barriers is predictive of not being vaccinated. Given that perceived barriers are the strongest predictors of behavior, a strong association between superstitious beliefs and barriers is predictive of not being vaccinated, which is exactly what the results of this survey revealed. The more superstitious people were, the weaker their perceived benefits of vaccination, the stronger their perceived barriers to vaccination, the less likely they were to be vaccinated (Lu et al., 2019).

In personal health classes on many campuses, students are required to complete a behavior change project. They choose an unhealthy behavior, develop a plan to change it, and adopt a healthier behavior. The modifying variable behind this is motivation. The motivation is a grade.

19
Q

What are events, people, or things that move people to change their behavior?

A

Cues to action

Examples include illness of a family member or friend; newspaper, magazine, or online articles; reminder emails or mailings from a healthcare provider; or health warning labels on a product.

For some women, developing gestational diabetes is a cue to action for behavior change to decrease the risk of developing type 2 diabetes (Tang et al., 2015). For others, it might be having an overweight friend diagnosed with type 2 diabetes or a healthcare provider’s warning.

With an estimated 70% to 85% of annual deaths from flu occurring in people 65 and older, vaccination is key for prevention in this age group (CDC, 2021). For older adults in nine different countries, the most important cues to action for flu vaccination are recommendations from medical personnel, family members, friends, and neighbors; information about flu vaccination from mass media; and public health education (Kwong et al., 2010).

Hayden, Joanna. Introduction to Health Behavior Theory (p. 184). Jones & Bartlett Learning. Kindle Edition.

20
Q

What is the belief in one’s own ability to do something?

A

Self-efficacy

This is important because people generally don’t try to do something new unless they think they can do it even when they perceived it to be beneficial.

21
Q

All in all, what affects the perception of susceptibility, seriousness, benefits, and barriers constructs within the health belief model and, therefore, behavior?

A

Modifying variables, cues to action, and self-efficacy

22
Q

What is the relationship of HBM constructs in a flow-type diagram?

A

Modifying variables is susceptibility, seriousness, and perceived threat to include the benefits minus the barriers and cues to action to equal behavior.