Congruence between patient characteristics and interventions may partly explain medication adherence intervention effectiveness: an analysis of 190 randomized controlled trials from a Cochrane systematic review

Due to the negative outcomes of medication nonadherence, interventions to improve adherence have been the focus of countless studies. The congruence between adherence-related patient characteristics and interventions may partly explain the variability of effectiveness in medication adherence studies...

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Bibliographic Details
Published in:Journal of clinical epidemiology 2017-11, Vol.91, p.70-79
Main Authors: Allemann, Samuel S., Nieuwlaat, Robby, Navarro, Tamara, Haynes, Brian, Hersberger, Kurt E., Arnet, Isabelle
Format: Article
Language:English
Subjects:
Clinical trials
Compliance
Confidence intervals
Correlation analysis
Criteria
Databases, Factual
Determinants of non-adherence
Effectiveness
Epidemiology
Humans
Intervention
Medication adherence
Medication Adherence - psychology
Meta-analysis
Patient adherence
Patient compliance
Patient Selection
Patients
Randomized controlled trials
Randomized Controlled Trials as Topic - methods
Research methods
Self Administration
Systematic review
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Summary:Due to the negative outcomes of medication nonadherence, interventions to improve adherence have been the focus of countless studies. The congruence between adherence-related patient characteristics and interventions may partly explain the variability of effectiveness in medication adherence studies. In their latest update of a Cochrane review reporting inconsistent effects of adherence interventions, the authors offered access to their database for subanalysis. We aimed to use this database to assess congruence between adherence-related patient characteristics and interventions and its association with intervention effects. We developed a congruence score consisting of six features related to inclusion criteria, patient characteristics at baseline, and intervention design. Two independent raters extracted and scored items from the 190 studies available in the Cochrane database. We correlated overall congruence score and individual features with intervention effects regarding adherence and clinical outcomes using Kruskal–Wallis rank sum test and Fisher's exact test. Interrater reliability for newly extracted data was almost perfect with a Cohen's Kappa of 0.92 [95% confidence interval (CI) = 0.89–0.94; P 
ISSN:0895-4356
1878-5921
DOI:10.1016/j.jclinepi.2017.07.011