Table 2.
The joint effects of problematic mobile phone use, physical activity (wave 1) and depression symptoms (wave 1 and 2)
| Depression symptoms | ||||||
|---|---|---|---|---|---|---|
| Wave 1 | Wave 2 | |||||
| PMPU | N (%) | Crude OR (CI 95%) | Adjusted OR (CI 95%) a | N (%) | Crude OR (CI95%) | Adjusted OR (CI95%) a |
| No | 144 (9.4%) | 1.00 | 1.00 | 139 (9.1%) | 1.00 | 1.00 |
| Yes | 227 (37.3%) | 5.70 (4.49,7.23)*** | 5.76 (4.52,7. 36)*** | 153 (25.1%) | 3.35 (2.60,4.31)*** | 3.20 (2.47,4.15)*** |
| PA | N (%) | Crude OR (CI 95%) | Adjusted OR (CI 95%) | N (%) | Crude OR (CI95%) | Adjusted OR (CI95%) |
| Sufficient | 109 (14.5%) | 1.00 | 1.00 | 92 (12.2%) | 1.00 | 1.00 |
| Insufficient | 262 (19%) | 1.39 (1.09,1.77)** | 1.40 (1.09,1.79)** | 200 (14.5%) | 1.22 (0.94,1.59) | 1.24 (0.95,1.62) |
| Joint effects of PMPU and IPA | ||||||
| 0 | 43 (7.6%) | 1.00 | 1.00 | 44 (7.8%) | 1.00 | 1.00 |
| 1 | 167 (14.6%) | 2.08 (1.46,2.96)*** | 1.99 (1.40,2.84)*** | 143 (12.5%) | 1.70 (1.19,2.42)** | 1.70 (1.19,2.44)** |
| 2 | 161 (38.2%) | 7.52 (5.20,10.86)*** | 7.36 (5. 09,10.66)*** | 105 (24.9%) | 3.94 (2.70,5.75)*** | 3.74 (2.56,5.48)*** |
aAdjusted for age, BMI, sex, residential area, perceived family income, cigarette use, alcohol use
*P < 0.05, **P < 0.01, ***P < 0.001