BACKGROUND: Chronic suppurative otitis media (CSOM) is the most common ear infection that causes hearing loss and affects the quality of life worldwide. AIM: The study aimed to describe the risk factor of CSOM patients at a private hospital in Yogyakarta, Indonesia, from March to June 2021. METHODS: This study was an observational analytical study with a case–control design. The respondents were 55 patients with CSOM who met inclusion criteria and 56 respondents as controls. A checklist

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... w was conducted to determine the present and past history of diseases, and the relationship among potential risk factors was analyzed using bivariate analysis. A bivariate analysis was used to specify the odds ratios, 95% confidence intervals, and the relationship between risk factors and the incidence of CSMO. RESULTS: The characteristic cases were as follows: Majority age over 20 years, 56% male, 47% university degree, 29% history of allergy, 25% history of acute respiratory infection, 56% complain of discharge from the ear, 31% snoring, 67% cigarette consumption, 42% earn 2–5 million rupiahs per month, and 73% of their homes are closed to health-care facilities. Four risk factors for CSOM omit this included: Education, medical history from the ear, snoring, and income per month (p < 0.05). CONCLUSION: According to the results, the majority of CSOM patients to be treated at a private clinic in Yogyakarta were male at productive age, had university education, had no history of allergies and acute respiratory infections, and had a history of secrete from the ear, exposure to cigarettes, and median income per month.