Table 2 Prevalence of depression (n and %) and its association with gender, grade, BMI, SES, SB time, alcohol consumption, smoking behavior, and unintentional injuries among urban high-school students in Nanjing, China
| Â | Prevalence n (%) | Â | |
|---|---|---|---|
| Â | Depression | Non-depression | Adj. Odds ratio (95% CI)** |
Gender | Â | Â | Â |
   Girls | 172 (13.6) | 1092 (86.4) | 1 |
   Boys | 212 (18.0) | 968 (82.0) | 1.04 (0.79, 1.38) |
School Grade | Â | Â | Â |
   7 | 102 (13.3) | 666 (86.7) | 1 |
   8 | 145 (17.5) | 684 (82.5) | 1.06 (0.77, 1.45) |
   9 | 137 (16.2) | 710 (83.8) | 0.84 (0.61, 1.17) |
Body Mass Index | Â | Â | Â |
   Non-overweight | 329 (15.2) | 1839 (84.8) | 1 |
   Overweight | 35 (19.1) | 148 (80.9) | 1.23 (0.97, 1.56) |
   Obesity | 20 (21.5) | 73 (78.5) | 1.43 (1.01, 2.02) |
Parental job statuses | Â | Â | Â |
   Both employed | 256 (14.1) | 1564 (85.9) | 1 |
   Father unemployed | 24 (24.0) | 76 (76.0) | 1.69 (0.96, 2.97) |
   Mother unemployed | 66 (18.4) | 292 (81.6) | 1.25 (0.89, 1.77) |
   Both unemployed | 38 (22.8) | 128 (77.2) | 1.60 (1.02, 2.51) |
Family structure | Â | Â | Â |
   Both parents | 320 (15.0) | 1818 (85.0) | 1 |
   Single parent | 40 (18.3) | 178 (81.7) | 1.11 (0.72, 1.70) |
   Others | 24 (27.3) | 64 (72.7) | 2.39 (1.35, 4.29) |
Study time†|  |  |  |
   Low | 120 (14.4) | 711 (85.6) | 1 |
   Middle | 128 (16.0) | 671 (84.0) | 1.03 (0.77, 1.38) |
   High | 136 (16.7) | 678 (83.3) | 1.12 (0.84, 1.49) |
Sleep time†|  |  |  |
   Low | 155 (19.4) | 643 (80.6) | 1 |
   Middle | 120 (15.1) | 676 (84.9) | 0.77 (0.58, 1.02) |
   High | 109 (12.8) | 741 (87.2) | 0.63 (0.47, 0.85) |
TV time†|  |  |  |
   Low | 128 (15.9) | 678 (84.1) | 1 |
   Middle | 99 (12.9) | 671 (87.1) | 0.84 (0.62, 1.13) |
   High | 157 (18.1) | 711 (81.9) | 1.27 (0.94, 1.67) |
Alcohol consumption | Â | Â | Â |
   Non | 216 (12.2) | 1558 (87.8) | 1 |
   Yes | 168 (25.1) | 502 (75.9) | 1.97 (1.55, 2.52) |
Smoking behavior | Â | Â | Â |
   Non | 332 (14.3) | 1984 (85.7) | 1 |
   Yes | 52 (40.5) | 76 (59.5) | 2.69 (1.80, 4.03) |
Unintentional injuries | Â | Â | Â |
   Non | 207 (13.4) | 1342 (86.6) | 1 |
   Yes | 177 (19.4) | 718 (80.2) | 1.45 (1.34, 1.86) |
Overall | 384 (15.7) | 2060 (84.3) | - |