Table 1.
Different Characteristics of the Participants with IA and Non-IA
| IA (N =359) | Non-IA (N = 1,522) | Effect size Cohen’s d | Chi/t-test | p | ||
|---|---|---|---|---|---|---|
| Gender, n (%) | Male | 183 (19.2) | 770 (80.8) | 0.002 | 0.966 | |
| Female | 175 (19.1) | 740 (80.9) | ||||
| Age, M (SD) | 14.82 (1.64) | 14.60 (1.85) | 0.121 | −2.172 | 0.030 | |
| BMI, M (SD) | 18.82 (3.29) | 18.92 (3.09) | 0.031 | 0.563 | 0.574 | |
| One-child, n (%) | Yes | 99 (21.1) | 371 (78.9) | 1.610 | 0.205 | |
| No | 250 (18.4) | 1,109 (81.6) | ||||
| Parents’ marriage, n (%) | Stable | 289 (18.1) | 1,310 (81.9) | 5.453 | 0.020 | |
| Instable | 59 (24.4) | 183 (75.6) | ||||
| Paternal education, n (%) | University | 44 (18.2) | 198 (81.8) | 4.021 | 0.259 | |
| High school | 102 (18.8) | 440 (81.2) | ||||
| Middle school | 161 (18.4) | 712 (81.6) | ||||
| Primary or below | 42 (24.9) | 127 (75.1) | ||||
| Maternal education, n (%) | University | 33 (16.7) | 165 (83.3) | 8.922 | 0.030 | |
| High school | 78 (16.4) | 398 (83.6) | ||||
| Middle school | 179 (19.4) | 746 (80.6) | ||||
| Primary or below | 57 (25.4) | 167 (74.6) | ||||
| SES, M (SD) | 5.86 (1.64) | 6.33 (1.69) | 0.280 | 4.741 | <0.001 | |
| SSS, M (SD) | 6.37 (1.84) | 6.84 (1.78) | 0.262 | 4.482 | <0.001 | |
| Low intensity PA, M (SD) | 2.64 (2.24) | 3.05 (2.04) | 0.191 | 3.127 | 0.002 | |
| Moderate to high intensity PA, M (SD) | 1.62 (1.89) | 2.11 (1.84) | 0.263 | 4.493 | <0.001 | |
Abbreviations: IA, internet addiction; BMI, body mass index; SES, social economic status; SSS, school social status; PA, physical activity.