Concordance and Adherence Flashcards
Define adherence.
The extent to which the patient’s behaviour matches
agreed recommendations from the prescriber.
Define compliance.
The extent to which the patient’s behaviour matches
the prescriber’s recommendations.
What is concordance?
- Does not address medicines-taking specifically
• Prescriber and patient should arrive at a harmonious
agreement (a Concord) regarding therapeutic
decisions that incorporate their respective views
• A concordant consultation, leading to shared
decision-making about a prescription can promote
adherence.
What percentage of prescribed medication is not taken as recommended?
30-50%.
What can be used to measure adherence?
Subjective measures, objective measures, proxy measures.
What are subjective measures of adherence?
Patients self-report, others.
What are objective measures of adherence?
Electronic monitoring devices, markers in a body fluid.
What are proxy measures of adherence?
Prescribing data, dispensing data.
What are the consequences of non-adherence?
Reduced health and increased costs.
What is the estimated cost of unused or unwanted medicines on the NHS annually?
£100 million to £300 million.
What are some reasons for non-adherence?
Health system/HCT factors, social/economic factors, therapy-related factors, patient-related factors, condition-related factors.
What are some therapy-related factors which may lead to non-adherence?
Tablet size, side effects.
