Table 1.
Demographic characteristics between IGD subjects and healthy controls.
| Variable | IGD subjects (n = 39) |
Healthy controls (n = 23) |
t/χ2 value |
|---|---|---|---|
|
| |||
| mean ± S.D. | mean ± S.D. | ||
| Demographics | |||
| Age | 22.64 ± 2.12 | 23.09 ± 2.13 | −0.798 |
| Years of education | 15.64 ± 1.42 | 15.91 ± 1.47 | −0.717 |
| Internet-related and other characteristics | |||
| CIAS | 75.59 ± 8.82 | 45.65 ± 9.80 | 12.389*** |
| Years of Internet use | 8.95 ± 2.52 | 7.17 ± 3.58 | 2.286* |
| Years of Internet gaming | 6.62 ± 2.82 | 5.80 ± 3.19 | 2.093* |
| Time spent on Internet gaming (hours per week) |
18.92 ± 9.85 | 0.92 ± 0.20a | 4.436*** |
| Duration of current gaming state (months) |
15.24 ± 14.38 | – | – |
| Alcohol use (at least once per month) |
33 | 17 | 1.06 |
| AUDIT-C | 3.48 ± 2.12b | 2.41 ± 1.33c | 2.19* |
| Cigarette use (at least once per month) |
5 | 0 | 3.21 |
| FTND | 2.00 ± 1.87 | – | – |
| Depression severity (BDI score) |
7.49 ± 5.84 | 2.91 ± 3.12 | 3.99*** |
| Anxiety severity (BAI score) |
5.05 ± 5.17 | 3.18 ± 3.23 | 1.74 |
| Behavioral characteristics | |||
| Craving for Internet gaming | 4.85 ± 1.19 | 1.52 ± 0.67 | 14.10*** |
| Craving for Internet surfing | 3.40 ± 1.19 | 2.94 ± 1.10 | 1.51 |
*
P < 0.05;
**
P < 0.01;
***
P < 0.001.
S.D. = standard deviation; IGD = Internet gaming disorder; CIAS = Chen Internet addiction scale; AUDIT-C = Alcohol use disorder identification test; FTND = Fagerstrom test for nicotine dependence; BAI = Back Anxiety Inventory; BDI = Beck Depression Inventory.
a
n = 6;
b
n = 33;
c
n = 17.