Table 4: The means and standard deviations for internet problems (IAT), depression (BDI), fatigue, (HADS), sleep problems (EES) and internet activities according Internet Addict and normal students (N=1,189).
*Two sided p values based on Chi square for categorical and student t test for the quantitative variables.
**Multiple option and multivariable choice, percentages do not add to 100%.
| Variables | IA N=236 | Normal N=953 | *p -value significance |
| IAT Score (Mean ± SD) | 73.50±4.41 | 55.48±7.10 | 0.001 |
| BDI Score(Mean ± SD) | 27.25±6.80 | 20.79±6.78 | 0.001 |
| Fatigue physical symptoms | 23.38±2.44 | 19.23±3.13 | 0.001 |
| Fatigue mental symptoms | 16.19±2.88 | 14.62±3.22 | 0.001 |
| Epworth Sleepiness Score | 13.58±4.82 | 12.71±4.47 | 0.013 |
| Internet activities** | n(%) | n(%) | |
| Gratifying Site | 47(19.9) | 111(11.6) | 0.001 |
| Games | 91(38.6) | 285(29.9) | 0.010 |
| Chat | 70(29.7) | 210(22.0) | 0.013 |
| Face book | 47(19.9) | 181(16.9) | 0.274 |
| Community | 30(12.7) | 125(13.1) | 0.869 |
| email | 128(54.2) | 588(61.7) | 0.036 |
| Research | 144(61.0) | 659(69.2) | 0.017 |
| Gambling | 18(7.6) | 54(5.7) | 0.258 |
| eBay shopping | 26(11.0) | 119(12.5) | 0.537 |