Fig. 2

Associations of physical activity and leisure screen time with psychological conditions during COVID-19 pandemic (n = 2426). PA: Physical activity; LST: Leisure screen time. Data are shown as odds ratios (95% confidence intervals) of having psychological problems in the second survey calculated by logistic regression. Model 1 Adjusted for baseline age, sex, grade, paternal education, maternal education, and family income. Model 2 Additionally, and mutually adjusted for physical activity or leisure screen time in the second survey. Model 3 Adjusted for factors in model 1 and physical activity, screen time, and psychological problems in the first survey. Children with missing or invalid data of age were excluded in model 1 (n = 11). Children with missing or invalid data of parental education or income were further excluded in models 2 and 3 (n = 121)