Translation and cultural adaptation of Glasgow Antipsychotic Side-effects Scale (GASS) in Arabic

BACKGROUND: In view of a constant increase in the number of patients treated with antipsychotic medications, the problem of nonadherence to the prescribed treatment becomes particularly relevant. Since one of the major contributors to the nonadherence is the presence of side effects of the drugs being used, the availability of tools for assessment of adverse reactions is of great importance. OBJECTIVE: The objective of the present work was to develop an Arabic language version of the Glasgow Antipsychotic Side-effect Scale (GASS). METHODS: After confirming the accuracy of translation, the questionnaire was given to 100 patients in two psychiatric centers in Saudi Arabia. RESULTS: The Cronbach’s alpha (0.793) indicated a good reliability of the survey. The mean GASS score was 19.09, indicating absent or mild side effects of antipsychotics, but 46% of patients experienced moderate, and 25% experienced severe side effects. An analysis of the correlation between patients’ characteristics and side effects revealed the presence of a positive relationship between the side effects and health literacy. CONCLUSIONS: It is expected that the Arabic-GASS will benefit Arabic-speaking psychiatric patients by helping them to express their concerns about side effects of antipsychotics. The collected results also document the importance of patients’ health literacy in achieving high-quality healthcare.