Primary outcome
The primary outcomes of this study were medication adherence. Medication adherence was evaluated using the Drug Attitude Inventory (DAI)-10 questionnaire (Japanese version).The DAI-10 questionnaire is a 10-item self-report scale widely used to evaluate patients’ attitudes towards medication. Respondents answer each question by choosing true or false. Each item is scored 1 or − 1, with the total score ranging from − 10 (very poor attitude) to + 10 (best possible attitude). A positive total score indicates a positive subjective response (adherent), whereas a negative total score indicates a negative subjective response (non-adherent) [