Table 4. Multivariable odds ratios^* and 95% confidence intervals of number of physical symptoms by physical activity tertile.

Values are presented as odds ratio (95% confidence interval).

^*Multivariable odds ratio were calculated using multinomial logistic regression and adjusted for age (continuous), sex, smoking status (none/past/current), alcohol use (none/moderate/heavy), body mass index (underweight/normal/overweight/obese), chronic disease (no/yes), self-rated mental health (bad/fair/good), academic status (undergraduate/master's course/doctoral course), hometown (Seoul/other urban/rural/foreign country), residence (living with parents/living alone/dormitory/others), and income (≥7, 5–6.9, 3–4.9, <3 million Korean won).