Study questionnaire:
A structured questionnaire was used to collect the study data. The questionnaire was adapted from several instruments used elsewhere considering the aim of the current study29-34. Face and content validity of the questionnaire was achieved through an expert panel of physicians, pharmacists, and biostatisticians. The questionnaire was then piloted in a sample of 20 doctors and 20 students and necessary edits were made. Those were not included in the final results.
The questionnaire consisted of five main sections with a total of 35 questions; sociodemographic characteristics, PG knowledge, attitudes, future expectations, and barriers to practice. Sociodempgraphics included questions regarding age, gender, level of seniority, and primary work setting of the respondents. PG knowledge was assessed using ten questions covering general information about PG, such as definition, availability in Jordan, and inter-individual gene variation. Attitudes towards PG were assessed using eight questions regarding the proposed clinical and therapeutic advantages of PG testing. Future expectations and practice questions (n=4) identified drugs with current and/or potential PG application. Nine barriers to practicing PG were utilized to identify the top perceived barriers to practice PG.