Table 1.
Sample characteristics of problematic Internet use (PIU), n (%)
| Variables | Total | PIU | χ2 | P |
|---|---|---|---|---|
| Gender | ||||
| Male | 7 734(49.8) | 804(10.4) | 106.67 | <0.001 |
| Female | 7 804(50.2) | 458(5.9) | ||
| Grade | ||||
| Junior High school | 4 758(30.6) | 395(8.3) | 16.54 | <0.001 |
| Senior High school | 5 719(36.8) | 517(9.0) | ||
| College | 5 061(32.6) | 350(6.9) | ||
| Residential background | ||||
| Rural | 6 297(40.5) | 415(6.6) | 33.28 | <0.001 |
| Urban | 9 241(59.5) | 847(9.2) | ||
| Area | ||||
| Eastern area | 5 866(37.8) | 570(9.7) | 84.56 | <0.001 |
| Middle area | 5 254(33.8) | 279(5.3) | ||
| Western area | 4 418(28.4) | 413(9.3) | ||
| Self-report family economy | ||||
| Lower | 2 746(17.7) | 237(8.6) | 19.16 | <0.001 |
| Middle | 10 250(66.0) | 769(7.5) | ||
| Upper | 2 542(16.4) | 256(10.1) | ||
| Service type mostly used | ||||
| Information searching | 2 291(14.7) | 42(1.8) | 361.52 | <0.001 |
| Entertainment | 7 279(46.8) | 764(10.5) | ||
| Chatting | 3 165(20.4) | 145(4.6) | ||
| Relieving loneliness | 1 652(10.6) | 254(15.4) | ||
| Others | 1 151(7.4) | 57(5.0) | ||
| Frequency of Internet use | ||||
| ≤ 4 times/week | 13 056(84.0) | 770(5.9) | 541.92 | <0.001 |
| ≥ 5 times/week | 2 482(16.0) | 492(19.8) |