Table 3. Odds ratio (95% CI) associated with the interaction of screen time and physical activity on mental health and sleep quality among Chinese college students.
| Screen time | Low PA | High PA | |||||
|---|---|---|---|---|---|---|---|
| n (%) | Crude OR (95% CI) | Adjusted OR a (95% CI) | n (%) | Crude OR (95% CI) | Adjusted OR a (95% CI) | ||
| Anxiety | >2h/day | 188 (20.3) | Ref. | Ref. | 9(14.3) | 0.65 (0.32–1.35) | 0.66 (0.31–1.37) |
| ≤2h/day | 529 (15.3) | 0.71 (0.59–0.85) b | 0.66 (0.55–0.79) b | 46(15.2) | 0.70 (0.49–1.00) | 0.61 (0.43–0.88) c | |
| Depressive | >2h/day | 214 (23.1) | Ref. | Ref. | 8 (12.7) | 0.48 (0.23–1.03) | 0.48 (0.22–1.03) |
| ≤2h/day | 493 (14.3) | 0.55 (0.46–0.66) b | 0.53 (0.44–0.63) b | 39 (12.9) | 0.49 (0.34–0.71) b | 0.45 (0.31–0.66) b | |
| Psychopathological symptoms | >2h/day | 224 (24.2) | Ref. | Ref. | 12 (19.0) | 0.74 (0.39–1.41) | 0.66 (0.34–1.29) |
| ≤2h/day | 548 (15.9) | 0.59 (0.50–0.70) b | 0.60 (0.48–0.68) b | 39 (12.9) | 0.46 (0.32–0.67) b | 0.41 (0.28–0.59) b | |
| Poor sleep | >2h/day | 110 (11.9) | Ref. | Ref. | 7 (11.1) | 0.93 (0.41–2.01) | 0.99 (0.43–2.25) |
| ≤2h/day | 328 (9.5) | 0.78 (0.62–0.98) c | 0.74 (0.58–0.93) c | 19 (6.3) | 0.50 (0.30–0.82) c | 0.48 (0.29–0.81) c | |
a Adjusted for gender, age, residential background, BMI, perceived family economy and perceived study burden.
b p<0.001.
c p<0.05 compared with referent.