Figure 1.

Adjusted association between sleep duration and suicidal ideation. Model 1: Adjusted for age, sex. Model 2: Adjusted for age, sex, education level, occupation, household income level, marital status, residency region, frequency of alcohol use, smoking status, and number of days of walking per week. Model 3: Adjusted for age, sex, education level, occupation, household income level, marital status, residency region, frequency of alcohol use, smoking status, number of days of walking per week, number of chronic disease, restriction on activity, perceived health status, and depressive mood.