ABSTRACT
BACKGROUND: Medication adherence is the first and main determinant of treatment success. It is defined by world health organization as "the degree to which the person's behavior corresponds to the agreed recommendations from a health care provider". Non-adherence is a multi-factorial phenomenon that can result from five major interacting factors. These are health team and health system-related factors; patient-related factors; therapy-related factors; socio-economic factors; and condition-related factors. The prevalence of non-adherence in mental illness was found to be 40% to 60% world wide. In developing countries, the magnitude of poor adherence is expected to increase. So this study aimed to assess medication adherence status and its associated factors among psychiatric patients in Asella Referral and Teaching Hospital in Oromia, Ethiopia. METHODS: An institution-based cross-sectional study was conducted from March 18, 2022 to May 25, 2022, with a total sample of 422 patients. Medication adherence was measured by a modified version of the medication adherence rating scale in the psychiatric setting to determine treatment adherence status, and unstructured questionnaires were assessed by interviewing the patient. Additional data concerning the medication-taking behavior of the patient was collected from caregivers. Bivariate logistic regression was performed to see the association between each explanatory variable and the outcome variable. The odds ratio and 95% confidence interval were used to see the association between treatment adherence and the strength of the link. RESULTS: A total of 395 study participants were interviewed, making a response rate of 93.6%. The prevalence of treatment adherence was 246(62.3%). Medication adherence show high association with lifetime alcohol use [AOR: 3.18, 95% CI:1.31-7.72] compared to those who had no alcohol use histroy, and perceived stigma [AOR (95% CI: 2.31 (1.01-5.31)] compared with those who had no perceived stigma, where as adherence show low association with having slight or superficial insight about illness [AOR (95% CI: 0.25 (0.12-0.53)] compared to those who reported cured off their illness and belief in medication [AOR: 0.36, 95% CI: 0.16-0.81)] compared to those who didn't belief in the medication they are taking. CONCLUSION: The prevalence of mediation adherence was found to be lower. In this study, factors such as having the slight insight or poor insight about their illness and belief in the medication decreased medication adherence, whereas having an alcohol use history in their lifetime and perceived stigma increased medication adherence. For a better health outcome, awareness creation at an insight level needs to be worked on by psychiatric professionals working on the follow-up psychiatric patients at psychiatry clinic of Assela Referral and Teaching Hospital to enable them to well adhere to their medication.