Session Nine (Non-Adherence) Flashcards
What are the differences between Fulfilment, Compliance and Adherence?
Medication Fulfilment = the process by which a person actually acquires their medication, e.g. picking up their prescription from the pharmacy
Compliance to Treatment implies a person is following a doctor’s orders without any involvement
Adherence to Treatment implies they are sticking to an agreed upon line of treatment, emphasises the role of the patient during the agreement phase.
What does 2009 NICE guidelines say about adherence?
- Should no longer be viewed as a problem with the patient
- Problem lies with the failure to agree to a prescription in the first place or a failure to identify and provide the support a patient needs to carry out the treatment.
- Represents a fundamental limitation in the delivery of healthcare.
What is included under the term Adherence?
- Taking medications
- Attending follow up appointments
- Lifestyle changes
- Monitoring tests
What are the 3 types of non-adherence?
- Primary NA/ Fulfilment: Not filling out a prescription
- Secondary NA: Overusing it, Missing doses, Changing dose amount or frequency, Changing the timing of doses
- Non-Persistence: Not continuing the treatment for the prescribed duration
What proportion of therapies are not adhered to?
30-50% of all medicines prescribed are thought to not be taken as directed. These numbers are probably worse for lifestyle changes and chronic, long term conditions.
Why is increasing adherence so important?
Better adherence leads to:
- Slowed disease progression
- Reduced morbidity and mortality (200k/year due to NA)
- Reduced disability
- Increased QoL
- Reduced healthcare costs (potentially wasting 4 billion pounds a year)
- Reduced unnecessary treatment escalation
- Reduced societal and workforce costs
Thought that increasing adherence would have a greater benefit than any new implementation
What are some recognised barriers to treatment adherence?
- Side effects
- Method of delivery
- Ability to collect drugs
- Lack of immediate benefit
- Symptoms disappearing before treatment complete…
What are the important myths around who doesn’t adhere to treatment?
- NA has nothing to do with the disease, it’s seen in all conditions no matter how serious or long term
- NA has nothing to do with the SE factors of the patient, significant variation seen in all demographics, as well as in individuals relating to different medications/ diseases/ times in their lives.
- NA can’t be ‘easily’ fixed by providing adequate information, or reminders, or threats or fear.
What is the evidence regarding the link between complexity of regimen and Adherence?
Mixed. Claxton et al 2001:
- Showed that simplifying a regimen can be helpful for some patients
- However, did not totally resolve NA issues
- NA appears to arise more from difficulty of fitting medication into daily life than complexity per se
What is intentional and unintentional non-adherence?
INA = Deliberately choosing not to take a medication. UINA = Forgetting/ not being able to take a medication
Important to remember that for many patients the reason they don’t take their meds falls somewhere between the two e.g. more likely to forget (UI) a medication you don’t agree with (I)
What is important to remember when dealing with Intentional NA?
Decision may seem illogical to us, but the patient will certainly have made a logical decision not to take their medications. Getting to the route of this decision making process might be key to getting over this NA issue.
How can we assess a patient’s adherence to medication?
- Self report methods
- Direct observation of treatment
- Can look at pharmacy dispensing records (although this only tells us about fulfilment not adherence)
- Pill counts
- Can do blood tests
- Medication Event Monitoring Systems (MEMS)
- Intelligent Drug Administration Systems
- Ingestible sensors
- Smart blisters that send a signal when popped
- By clinical outcome
McHorney (2008) Reviewed all factors believed to be associated with NA, with what factors did he find WEAK evidence for an association?
DEMOGRAPHIC FACTORS:
- Gender
- Income
- Age
- Race
- Personality
McHorney (2008) Reviewed all factors believed to be associated with NA, with what factors did he find MODERATE evidence for an association?
COGNITIVE or PSYCH FACTORS:
- Cognitive ability
- Depression
- Social support
- Coping skills
- Number of medicines
- Disease seriousness beliefs
- Health literacy
- Locus of control
- Self efficacy
- Trust in HCP
- Symptom experience
McHorney (2008) Reviewed all factors believed to be associated with NA, with what factors did he find STRONG evidence for an association?
Largely ILLNESS/TREATMENT FACTORS:
- Concerns about treatment e.g. fear of SEs
- Beliefs about illness (cause, timeline)
- Cost of therapy
- Necessity (including perceived)
- Perceived drug efficacy
Actually provides pretty good evidence or every model of NA tbh.
What is a common issue with self reported measures of adherence?
- Patients quite often lie about how much they adhere to therapy
- Self-representation bias
- Can work around this by using a scale such as the Medication Adherence Report Scale (MARS) which attempts to normalise NA in order to elicit a more honest response
- Rather than asking do you adhere its more do you forget and if so how often