Table 1.
Age, sex, depression, and hostility scores, and MAOA EcoRV polymorphism of the IGD group and controls.
| IGD Mean (SD) |
Control Mean (SD) |
t | |
|---|---|---|---|
| Age | 25.32 (4.20) | 25.73 (3.78) | −0.71 |
| Depression a | 23.91 (8.62) | 12.58 (7.98) | 9.38 *** |
| Expressive hostility behavior b | 17.75 (4.41) | 13.95 (3.94) | 6.29 *** |
| Hostility cognition b | 20.99 (4.60) | 15.92 (4.28) | 7.83 *** |
| Hostility affect b | 11.72 (4.17) | 8.14 (3.05) | 7.02 *** |
| Suppressive hostility b | 17.41 (4.18) | 13.70 (4.11) | 6.08 *** |
| Hostility total b | 67.87 (11.78) | 51.72 (10.84) | 9.82 *** |
| IGD n (%) |
Control n (%) |
χ2 | |
| Gender | |||
| Male | 54 (78.30%) | 108 (78.30%) | 0.00 |
| Female | 15 (21.70%) | 30 (21.70%) | |
| MAOA polymorphism | |||
| TT/T0 | 44 (63.80%) | 58 (42.00%) | 8.70 *** |
| C carrier | 25 (36.20%) | 80 (58.00%) |
*** p < 0.001. a Depression: score in the CES-D. b Hostility: score in the BDHIC-SF