Table 1.
Demographic and clinical characteristics of the samples.
| IAG | NCG | Test statistic | |
|---|---|---|---|
| Sex ratio (M/F) | 60 (32/28) | 60 (32/28) | – |
| Mean age (SD) | 23 (5) | 23 (5) | – |
| Handedness (R/M/L) | 23/15/22 | 22/17/21 | x2 = 3.60, p = 0.18, NS |
| Age range | 18–28 | 18–28 | – |
| Education years (SD) | 10.3 (2.2) | 10.1 (2.2) | t = 0.585, p = 0.560, NS |
| Dependence duration (month, SD) | 35.1 (11.0) | – | – |
| HAMA (SD) | 9.4 (3.2) | 8.4 (2.8) | t = 1.762, p = 0.081, NS |
| HAMD (SD) | 15.2 (4.8) | 13.5 (5.1) | t = 1.928, p = 0.056, NS |
IAG, Internet addition group; NCG, Normal control group; M, male; F, female; SD, standard deviation; HAMA, Hamilton Anxiety Scale; HAMD, Hamilton Depression Scale; NS, not significant.