A simple single-item rating scale to measure medication adherence: further evidence for convergent validity.

摘要: Background: Self-report measures of medication adherence are inexpensive and minimally intrusive. However, the validity self-reported is compromised by recall errors for missed doses socially desirable responding. Method: Examined convergent 2 self-report administered computerized interview: (a) (b) a single-item visual analogue rating scale (VAS). Adherence was also monitored using unannounced phone-based pill counts that served as an objective benchmark. Results: The VAS obtained estimates paralleled (UPCs). In contrast, (SR-recall) medications consistently overestimated adherence. Correlations with participant characteristics suggested computer-administered less influenced response biases than SR-recall doses. Conclusions: A offers valid method assessing adher...