Antipsychotic medication non-adherence and factors associated among patients with schizophrenia in eastern Ethiopia

Abstract Background Given that antipsychotic medication is a cornerstone for treating and preventing relapse in people with schizophrenia, non-adherence has been indicated as a big challenge. This study aimed to assess antipsychotic medication non-adherence and factors associated among patients with schizophrenia in eastern Ethiopia Methods We conducted an institution-based cross-sectional study in two public hospitals in Eastern Ethiopia from December 1, 2022, to January 31, 2023. Antipsychotic medication adherence was assessed using MOrisky medication adherence rating scale questionnaire, and insight was measured using the self-report insight scale for Psychosis (ISP). Multiple stepwise logistic regression models with Adjusted Odds Ratio (AOR) and 95% confidence interval (CI) were applied to identify the factors. Statistical significance was considered at p-value ≤ 0.05. Results We found that 44.57% of patients with schizophrenia experienced non-adherence to their antipsychotic medication. Being single (AOR = 2.48, 95% confidence interval [CI]:1.71, 3.58), alcohol users (AOR = 2.00, 95% confidence interval [CI]:1.46, 2.72), Khat chewers (AOR = 2.84, 95% confidence interval [CI]; 2.06, 3.90) and having no insight to their illness (AOR = 2.1, 95% confidence interval [CI]:1.52, 2.90) were more likely to be non-adherent to their antipsychotic medications Conclusions Non-adherence is a considerable burden among schizophrenia patients, and those who are single in their marital status, substance use short duration in their illness, are on multiple antipsychotic medications, and developing side effects require special attention at all steps of treatment levels caring process of such patients.