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
| Prevalence n (%) | |||
| Depression | Non-depression | Adj. Odds ratio (95% CI)** | |
| Gender | |||
| Girls | 172 (13.6) | 1092 (86.4) | 1 |
| Boys | 212 (18.0) | 968 (82.0) | 1.04 (0.79, 1.38) |
| School Grade | |||
| 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 | |||
| 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 | |||
| 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 | |||
| 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 | |||
| Non | 216 (12.2) | 1558 (87.8) | 1 |
| Yes | 168 (25.1) | 502 (75.9) | 1.97 (1.55, 2.52) |
| Smoking behavior | |||
| Non | 332 (14.3) | 1984 (85.7) | 1 |
| Yes | 52 (40.5) | 76 (59.5) | 2.69 (1.80, 4.03) |
| Unintentional injuries | |||
| 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) | - |
n = number of participants within subgroup; % = Percentages across row.
** odds ratios adjusted for age, gender, school grade, BMI, TV time, study time, sleep time, smoking behavior, alcohol consumption, unintentional injuries, parents' educational attainments, parents' job statuses, family structure.
† Study time, sleep time, and TV time were classified into tertiles, separately.