Table 1. Characteristics of study subjects by ‘depression’ status.
| Depression N (%) | |||
| No | Yes | ||
| Gender | male | 26926(67.97) | 12686(32.03) |
| female | 19867(56.04) | 15587(43.96) | |
| Self-rated academic achievement | very low | 5202(53.55) | 4512(46.45) |
| low | 11469(59.93) | 7669(40.07) | |
| middle | 12786(63.24) | 7433(36.76) | |
| high | 11619(66.08) | 5964(33.92) | |
| very high | 5717(67.96) | 2695(32.04) | |
| Parental support | both parents | 43821(62.83) | 25920(37.17) |
| single parent | 2174(57.41) | 1613(42.59) | |
| none | 798(51.89) | 740(48.11) | |
| Paternal education | Middle or less | 3028(58.34) | 2162(41.66) |
| High | 17682(62.68) | 10527(37.32) | |
| College or more | 18032(62.07) | 11017(37.93) | |
| unknown | 6127(67.15) | 2997(32.85) | |
| non-response | 1924(55.07) | 1570(44.93) | |
| Maternal education | Middle or less | 2909(58.92) | 2028(41.08) |
| High | 22438(62.4) | 13519(37.6) | |
| College or more | 13010(61.82) | 8034(38.18) | |
| unknown | 6591(67.49) | 3175(32.51) | |
| non-response | 1845(54.88) | 1517(45.12) | |
| Substance abuse | never used | 46641(62.55) | 27928(37.45) |
| used before | 72(26.97) | 195(73.03) | |
| in current use | 80(34.78) | 150(65.22) | |
| Internet addiction | normal | 42980(63.9) | 24282(36.1) |
| latent risk | 1626(52.37) | 1479(47.63) | |
| high risk | 2187(46.54) | 2512(53.46) | |
| Single-mixed gender schools | co-education | 29476(62.15) | 17953(37.85) |
| girls-only | 7663(56.76) | 5837(43.24) | |
| boys-only | 9654(68.29) | 4483(31.71) | |
| Metro/cities/rural | metropolis | 24498(62.36) | 14789(37.64) |
| cities | 16547(62.66) | 9860(37.34) | |
| rural | 5748(61.33) | 3624(38.67) | |
| Mean±SD | Mean±SD | ||
| Grade | 3.35±1.685 | 3.63±1.702 | |
| Family Affluent Score | 4.53±1.83 | 4.52±1.865 | |
| Alcohol drinking volume | 0.39±1.032 | 0.69±1.352 | |
| Smoking volume | 0.33±1.064 | 0.58±1.42 | |
| Strenuous physical activity | 1.84±1.693 | 1.76±1.683 | |
| Moderate physical activity | 1.79±1.607 | 1.75±1.622 | |
| Weight training | 1.27±1.556 | 1.24±1.576 | |
| Self-rated sleep satisfaction | 2.95±1.087 | 2.54±1.112 | |
| BMI | 20.45±2.996 | 20.44±2.87 | |
| Self-rated health | 3.84±0.809 | 3.57±0.9 | |