marginally significantp = 0.089
Multivariable logistic regression analysis Using the purposeful selection approach, three predictors were retained in the final multivariable logistic model based on a combination of statistical significance and clinical relevance: resident medical insurance was associated with significantly lower odds of developing depressive symptoms (OR = 0.005; 95% CI: 0.000–0.104; p = 0.001), living with children was associated with a reduced risk (OR = 0.229; 95% CI: 0.063–0.839; p = 0.026), and age group (60–69 years) remained marginally significant (OR = 0.295; 95% CI: 0.072–1.207; p = 0.089) and was retained as a confounder due to its known relevance in geriatric mental health.