OCR psychology - Features of Medical Adherence
- Created by: Ella
- Created on: 28-11-13 17:21
Adherence
When someone supports or sticks to a particular set of ideas or rules such as a medical regimen.
Why might patients not adhere to medical advice?
Rational choice theory - People may make the choice not to adhere for particular reasons such as:
- They have reason to believe that the treatment is not working (relevant for asymptomatic illnesses like hypotension).
- There are practical barriers to the treatment (e.g. cost or social difficulties)
- When the costs outweigh the benefits e.g. unpleasant side effects.
Psychoanalytic theory - explanations include avoidance &/or denial of the problem.
Bulpitt - Reasons for non-adherence
Aim: To review research on adherence in hypotension patients.
Methodology - A Review Article --> of a range of research which indentified problems with taking drugs for hypotension.
Procedure: The research was analysed to identify the physical & psychological effects of drugs on a persons life --> These included work, physical well being, hobbies etc...
Findings:
Anti-hypotension drugs have many side effects such as sleepiness, dizziness & lack of sexual functioning -> they also affect cognitive functioning & so work and hobbies etc.
Bulpitt reported that...
- In one study by Curb (1985), 8% of males discontinued their treatment due to sexual problems.
- Research by the Medical Research Centre found that 15% of patients had stopped taking the drug due to other side effects.
Bulpitt (continued...)
Conclusion: When the costs of taking medication (e.g. side effects) outweigh the benefits of treating a mainly asympomatic illness, such as hypotension, there is less likelyhood of the patients adhering to their treatment.
Measuring Adherence
Methods for measuring adherence:
Self report - using interviews, questionnaires, scales etc...
- Can produce unexpected information
- Can allow for social desireability bias
Physiological methods - e.g. blood & urine tests
- Can indicate whether a patient has been adhereing to their medical regimen.
- Reliable - can be easily replicated
- Not always possible/useful for all cases
- Ethics - using child patients?
Observing theraputic outcomes - e.g. if a patient was given antibiotics for an infection and a week later the infection had disappeared, then it is fairly safe to assume that they had been adhering to their treament (i.e. taking the antibiotics).
- Can observe the medicines effect on a persons health.
- Not possible/useful for all cases - There are cases when, despite strict adherence to treatment, the outcome isn't so positive.
Lustman - Measures of non-adherence
Aim: To assess the efficacy of the anti-depressant, Fluoxetine, in treating depression by measuring glycemic control.
Methodology - A randomised controlled double- blind study.
Participants:
- 60 patients
- They either had type 1 or 2 diabetes and depression.
Procedure:
- Patients were randomly assigned to either Fluoxetine or placebo group.
- Patients were assessed for depression using psychometric tests, their adherence to their medical regimen (measured by measuring their GHb levels which indicated their glycermic control).
Findings:
Patients given Fluoxetine reported lower levels of depression & had lower (nearer to normal) levels of GHb which indicated their improved adherence.
Lustman (continued...)
Conclusion:
Greater adherence was shown by patients who were less depressed & anxious.
--> improves their compliance with medical regimen/requests.
Evaluative points:
Standardised procedure - using physiological tests which are easily replicated & unbiased.
Improving Adherence
* Positive reinforcment/operant conditioning -> Watt (Funhaler
* Increase education
- Early school programmes
- Media promotion
- Doctors & nurses
--> can increase perceived susceptiblity & seriousness & therefore internal LOC & self efficacy.
* Legislation -> enforcing of Laws (punishment - operant conditioning).
* Make medication more accessible.
Watt - Improving Adherence
Aim: To see if using a 'funhaler' can improve children's adherence to taking medication for asthma.
Methodology - A field experiment (although as it uses children with asthma, it can be considered a quasi-experiment).
The experiment sets up 2 conditions & then uses self report to measure adherence rates.
Participants:
- 32 Australian children -> 10 boys, 22 girls.
- Aged 1.5 to 6 years (mean of 3.2 years)
- All diagnosed with asthma & prescribed drugs delived by pressurised metered dose inhalers (pMDI)
Procedure:
- Each child was given the Breath-a-tech for 1 week -> parents were given a questionnaire to complete.
- The 2nd week, the child used the Funhaler -> parents were given a questionnaire with matched questions at the end of the (2nd) week.
Watt (continued...)
Result:
38% more parents were found to have medicaed their children the previous day when using the Funhaler.
Conclusion:
The Funhaler reinforced correct usage of inhaler with spinner & wistle.
--> This improved adherence to the medication.
Therefore, by making the regimen fun, adherence (certainly in children) can be improved.
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