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BATTERY REVIEWER - BIOEPI > BIOEPI - FINALS > Flashcards

BIOEPI - FINALS Flashcards

1
Q

Only the patients’ records of odd months of the year 2020 were included in the study.

A

Systematic sampling

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2
Q

A higher confidence level chosen for an estimate, the wider the interval estimate would be.

A

True

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3
Q

Obj: To determine the vaccine efficacy of the different forms of vaccines (inactivated or weakened virus vaccines, protein-based vaccines, viral vector vaccines, RNA and DNA vaccines)
Vaccine response is defined as with or without antibody production, then the percentage of people vaccinated with antibody production are those who had vaccine efficacy.
The researcher believes that the vaccine efficacy differs from each other.

The statistical test to use is chi square test

A

True

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4
Q

Obj: To determine the vaccine efficacy of the different forms of vaccines (inactivated or weakened virus vaccines, protein-based vaccines, viral vector vaccines, RNA and DNA vaccines)
Vaccine response is defined as with or without antibody production, then the percentage of people vaccinated with antibody production are those who had vaccine efficacy.
The researcher believes that the vaccine efficacy differs from each other.

If the null hypothesis was indeed true, but was rejected, a beta error was committed.

A

False

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5
Q

Obj: To determine the vaccine efficacy of the different forms of vaccines (inactivated or weakened virus vaccines, protein-based vaccines, viral vector vaccines, RNA and DNA vaccines)
Vaccine response is defined as with or without antibody production, then the percentage of people vaccinated with antibody production are those who had vaccine efficacy.
The researcher believes that the vaccine efficacy differs from each other.

If the null hypothesis was rejected, then the vaccine efficacy of the different vaccines are not the same.

A

True

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6
Q

Obj: To determine the vaccine efficacy of the different forms of vaccines (inactivated or weakened virus vaccines, protein-based vaccines, viral vector vaccines, RNA and DNA vaccines)
Vaccine response is defined as with or without antibody production, then the percentage of people vaccinated with antibody production are those who had vaccine efficacy.
The researcher believes that the vaccine efficacy differs from each other.

The population groups are related.

A

False

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7
Q

Obj: To determine the vaccine efficacy of the different forms of vaccines (inactivated or weakened virus vaccines, protein-based vaccines, viral vector vaccines, RNA and DNA vaccines)
Vaccine response is defined as with or without antibody production, then the percentage of people vaccinated with antibody production are those who had vaccine efficacy.
The researcher believes that the vaccine efficacy differs from each other.

This is a comparison hypothesis testing

A

True

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8
Q

Conclusion: The weight of evidence strongly suggests that extended-duration work shifts significantly increase fatigue and impair performance and safety. The conclusion of the study:

A

Made generalizations about work hours and performance as well as safety

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9
Q

Introducing a new diagnostic tool has to be validated with the gold standard “criterion truth”

A

True

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10
Q

A directional alternative hypothesis would be expressed as:

A

There is a direct relationship between work hours of health care providers and patient safety.

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11
Q

Choose the BEST answer:

If normally distributed, will fall on the same line

A

Mean, Median, Mode

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12
Q

Best measure of central tendency for skewed data

A

Median

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13
Q

Sum of all observations divided by the number of observations

A

Mean

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14
Q

Pertains to the “peak” when presented in the frequency polygon

A

Mode

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15
Q

Sensitive to extreme values

A

Mean

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16
Q

The time-varying reproduction number (Rt) for covid indicates the possible number of people being infected by a sick person, at a specific time with control measures in place. Based on the latest data, 95% confident that Rt is 0.85 plus/minus 0.02, which means each infected individual was infecting an average of 0.85 persons around two weeks ago.

How was this data presented?

A

Narrative

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17
Q

The t score was used for the computation of the interval estimate.

A

Length of stay of 25 covid patients admitted at Hospital X

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18
Q

The following are the characteristics of covid vaccinated individuals in Barangay X Determine the type of variable:

Age - 18 - 65 years old

A

Quantitative continuous

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19
Q

Profession - Front liner / Not Front liner

A

Qualitative

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20
Q

Vaccine brand given - Astra Zeneca, Sinovac, Pfizer

A

Qualitative

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21
Q

Co-morbidities - with or without co- morbidities

A

Qualitative

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22
Q

Number of individuals vaccinated

A

Quantitative discrete

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23
Q

A two-tailed alternative hypothesis:

A

There is a relationship between work hours of health care providers and patient safety.

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24
Q

Patients were divided into several age groups. From each age group, they were further selected for the study

A

Stratified sampling

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25
Q

Determine the scale of measurement used: VARIABLE: Subjects

General Education / Professional subjects

A

Nominal

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26
Q

1st year subjects / 2nd year subjects / 3rd year subjects / 4th year subjects

A

Ordinal

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27
Q

Major / Minor

A

Nominal

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28
Q

Chemistry / Math / Physics

A

Nominal

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29
Q

Determine the type of statistics used:

The correct answer is: Top 10 students in Biostatistics in each class

A

Descriptive

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30
Q

Probability of re-infection after two (2) doses of covid-19 vaccination

A

Inferential

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31
Q

Relationship between ethnicity and resistance to covid-19

A

Inferential

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32
Q

Oxygen saturation ranges of moderate to severe covid-19 patients

A

Descriptive

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33
Q

Birth month for which most Biostatistics students belong

A

Descriptive

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34
Q

The counterpart figure of the time series table is the frequency polygon.

A

False

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35
Q

Determine the BEST data presentation tool for the following:

Distribution of vaccinees as to categories A1 (health front liners), A2 (Elderly), A3 (With comorbidities), A4 (students)

A

Pie chart

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36
Q

Daily Covid-19 cases from January 2021 up to May 27, 2021

A

Line graph

37
Q

Total number of Covid-19 cases from March 2020 up to present

A

Textual

38
Q

Mean age of vaccinees

A

Textual

39
Q

The sample proportion is an unbiased estimate of the population proportion.

A

True

40
Q

A descriptive study on the coping mechanisms of students in online learning. Determine the type of variable:

Adequate sleeping hours
Group learning
Subjects enrolled in
Advance studying
Year level of student

A

Adequate sleeping hours
- Independent
Group learning
- Independent
Subjects enrolled in
- Independent
Advance studying
- Independent
Year level of student
- Independent

41
Q

The table title is traditionally placed below the body of the table.

A

False

42
Q

Choose the best answer:

Snowball technique

A

Referral

43
Q

Multi-stage sampling

A

Nationwide studies

44
Q

Quota sampling

A

A specified number to meet

45
Q

Systematic sampling

A

Unsuspected periodicity

46
Q

Stratified sampling

A

Lottery

47
Q

Choose the BEST answer:

Very sensitive to extreme values

A

Range

48
Q

Simplest measure of variability

A

Range

49
Q

Used when comparing two data sets with different units of measurements

A

Coefficient of variation

50
Q

Spread in the middle 50%

A

Interquartile range

51
Q

Square root of variance

A

Standard deviation

52
Q

At 95% confidence, the z score is:

A

1.96

53
Q

The higher the sensitivity, the higher the true negativity of the test.

A

False

54
Q

These are the measurements of the incision length (in cm) made by surgeons during appendectomy:
6.2, 3.3, 4.9, 4.7, 5.8, 5.8, 5.0, 4.9, 5.5

The median position is the Fifth position.

A

True

55
Q

The interquartile range is between the 25 to the 75 percentile.

A

True

56
Q

The range is 5.5 – 6.2.

A

False

57
Q

The mean is lesser than the median.

A

False

58
Q

The coefficient of variation of the above data set has to be computed

A

False

59
Q

Determine the type of statistics used:

Estimated date when the Philippines will attain herd immunity against covid-19

A

Inferential

60
Q

Extracurricular factors associated with academic performance among online learners

A

Inferential

61
Q

To show the percentage coverage of covid vaccination from March to May 2021

A

Descriptive

62
Q

Vaccine brand and its effect on willingness to be vaccinated

A

Inferential

63
Q

Reasons for vaccine hesitancy

A

Descriptive

64
Q

The real meat of the report for detailed information lies in the:

A

Statistical table

65
Q

Percent of people with the disease whose tests are truly positive:

A

Sensitivity

66
Q

The confidence interval reflects the variability of the unknown parameter

A

False

67
Q

The legends are small letters found below the bottom of the table.

A

False

68
Q

March 4, 2021
Effect of Ivermectin on Time to Resolution of Symptoms Among Adults With Mild COVID-19 A Randomized Clinical Trial Eduardo López-Medina, MD, MSc Pío López, MD; Isabel C. Hurtado, MD; et al Question: What is the effect of ivermectin on duration of symptoms in adults with mild COVID19?

Findings: In this randomized clinical trial that included 476 patients, the duration of symptoms was not significantly different for patients who received a 5-day course of ivermectin compared with placebo (median time to resolution of symptoms, 10 vs 12 days; hazard ratio for resolution of symptoms, 1.07).
Meaning: The findings do not support the use of ivermectin for treatment of mild COVID-19, although larger trials may be needed to understand effects on other clinically relevant outcomes.

If the alpha was set at 0.05, the p value for this study must have been greater than 0.05

A

True

69
Q

10 and 12 days were the point estimates of mild covid symptoms of those given ivermectin or not.

A

True

70
Q

The result of the study was due to sampling variation.

A

True

71
Q

The hypothesis testing is relating ivermectin to duration of symptoms.

A

False

72
Q

Based on the study, the null hypothesis was rejected.

A

False

73
Q

The probability of a false-negative result in an infected covid person decreases from 100% (95% CI, 100%-100%) on day 1 to
67% (95% CI, 27%-94%) on day 4. The Day
4 data of 67% is the:

A

Point estimate

74
Q

Every 50 student coming in the Institute of Medicine Lobby was interviewed regarding student service.

A

Systematic sampling

75
Q

This is to determine precision of a laboratory procedure:

A

Reliability

76
Q

People who do not have the disease but are labeled with the disease.
-False positive

Random Numbers
02951 83349 72056 31491 054257 11295
I: 1. Mario 6. Carmen 11. Susan 16. Pauline
21. Erwin
II: 2. Jessica 7. Romy 12. Henry 17. Dick
22. Gilda
III: 3. Sophia 8. Babylene 13. Rene 18.
Josephine 23. Marilyn
IV: 4. Rose 9. Alice 14. Lilibeth 19.
Maribeth 24. Caroline
V: 5. Johnson 10. Emmie 15. Justine 20.
Nina 25. Peter

If a stratified sampling will be done, gender can be used as stratification variable.

A

True

77
Q

The columns (I, II, III, IV, V) can also serve as stratification variable

A

True

78
Q

If a cluster sampling will be used, the columns (I, II, III, IV, V) can serve as clusters.

A

True

79
Q

The cluster sampling makes use of the table of random numbers to get samples.

A

False

80
Q

If a simple random sampling will be done, using the table of random numbers starting from right to left, the one to be picked after Erwin will be Dick.

A

True

81
Q

All third-year students were grouped based on section enrolled in. From the 5 sections, only three sections were selected. All members of the three sections were part of the study.

A

Cluster sampling

82
Q

Work schedules have a profound effect on health care providers’ sleep and performance, as well as on their safety and that of their patients. (A study by Lockley et al on Effects of Health Care Provider Work Hours and Sleep Deprivation on Safety and Performance).
The above statement is the:

A

Alternative hypothesis

83
Q

Since there are only few scholars, all of them became part of the study.

A

Total enumeration

84
Q

Measures of location:

All percentiles are deciles

A

False

85
Q

All deciles are percentiles

A

True

86
Q

All quartiles are deciles

A

False

87
Q

All deciles are quartiles

A

False

88
Q

All quartiles are percentiles

A

True

BATTERY REVIEWER - BIOEPI (3 decks)

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