Alcohol use disorder and its determinant factors among patients with schizophrenia attending treatment at mental specialized hospital, Addis Ababa, Ethiopia: A cross-sectional study

BACKGROUND: Alcohol use disorder is one of the primary causes of avoidable death, illness, and injury in many societies throughout the world. Although alcohol use disorder can influence the natural history of a disease, disease recurrence, quality of life, and treatment adherence in psychiatric patients, the data on its magnitude is scarce. OBJECTIVES: This study was aimed to determine the magnitude of alcohol use disorder and its determinants among patients with schizophrenia attending a mental specialized hospital in Addis Ababa, Ethiopia. METHODS: An institutional-based cross-sectional study was conducted from May 15 to June 15, 2018. An alcohol use disorder identification test was employed among a sample of 414 randomly selected patients with schizophrenia. Alcohol use disorder was categorized as hazardous drinking (Alcohol Use Disorders Identification Test (AUDIT) score of 8–15), harmful drinking (AUDIT score of 16–19), and alcohol dependence (AUDIT score of 20 or above). The data were entered into Epi-Data 3.1 and exported to SPSS 20 for analysis. Logistic regression was fitted to identify factors associated with alcohol use disorder. RESULTS: The prevalence of alcohol use disorder was 38.4% (95% confidence interval (CI) 33.7, 42.9). Of this, 22.4% of the patients had hazardous drinking, 8.4% harmful drinking, and 7.6% alcohol dependence. Factors associated with alcohol use disorder were male sex (adjusted odds ratio (AOR) = 5.8, 95% CI 2.55, 13.19), being single (AOR = 3.0, 95% CI 1.63, 5.51), divorced (AOR = 4.3, 95% CI 1.95, 9.47) and widowed (AOR = 3.5, 95% CI 1.39, 8.81), having family history of alcoholism (AOR = 3.8, 95% CI 1.98, 7.19), longer duration of illness (AOR = 3.9, 95% CI 1.83, 8.36), previous history of psychiatric diagnosis (AOR = 2.2, 95% CI 1.1, 4.34), and concomitant use of non-alcoholic substances (AOR = 3.7, 95% CI 2.06, 6.74). CONCLUSIONS: Almost four in ten patients with schizophrenia had alcohol use disorder. Male sex, single, divorced, and widowed, family history of alcohol use, long duration of illness, previous history of psychiatric diagnosis, and concomitant use of non-alcoholic substances were significantly associated with alcohol use disorder. Continuous counseling of at risk populations about alcohol consumption should be strengthened.