Influence of the mode of administration on the results of medication adherence questionnaires.
Ana C CabralMariana Moura-RamosMaria Margarida Castel-BrancoM Margarida CaramonaFernando Fernandez-LllimosIsabel Vitória FigueiredoPublished in: Journal of evaluation in clinical practice (2017)
The interview administration method induced bias that led to a higher percentage of "never" answers and a subsequent overestimation of adherence levels. Self-report administration should be preferred in the application of medication adherence questionnaires.