Beliefs about medicines questionnaire (BMQ)-specific

The validated Arabic version of the BMQ-specific [17] (S3 and S4 Appendixes) was used to assess participants’ positive beliefs represented as perception of medicines’ necessity (Necessity statements) and participants’ negative beliefs represented as concerns about the medicines (Concerns statements) [18]. Each part consisted of five statements of 5-point Likert scale. The responses for the statements were 1: “Strongly disagree”, 2:“Disagree”, 3:“Not certain”, 4:“Agree” and 5:“Strongly disagree”. Means for both parts were computed; these means were considered Necessity score and Concerns score.