TABLE 3.
Comparison of user profiles, SDQ, and PHQ-A according to the styles of in-game purchase.
| Total (N = 335) |
Non-purchase users (n = 232) |
Planned purchase users (n = 56) |
Unplanned purchase users (n = 47) |
F | Partial η2 | Shaffer’s post hoc test (p < 0.05) | ||||||
| M | SD | M | SD | M | SD | M | SD | |||||
| Online gaming | ||||||||||||
| Time spent (per weekday) | 1.60 | 2.36 | 1.41 | 2.59 | 1.88 | 1.50 | 2.29 | 1.90 | 3.18* | 0.02 | ||
| Time spent (per weekend) | 3.29 | 3.07 | 2.65 | 2.45 | 4.75 | 3.60 | 4.87 | 3.92 | 19.19** | 0.11 | Non < planned, unplanned | |
| Monthly allowance (JPY) | 2,347 | 1,242 | 2,319 | 1,277 | 2,390 | 977 | 2,400 | 1,370 | 0.11 | <0.01 | ||
| SDQ | ||||||||||||
| Prosocial behavior | 6.83 | 2.15 | 6.92 | 2.14 | 6.52 | 2.28 | 6.77 | 2.09 | 0.60 | <0.01 | ||
| Emotional symptoms | 2.98 | 2.58 | 2.92 | 2.60 | 3.04 | 2.59 | 3.07 | 2.46 | 0.05 | <0.01 | ||
| Conduct problems | 2.01 | 1.54 | 1.79 | 1.24 | 2.29 | 1.78 | 2.89 | 2.12 | 11.18** | 0.07 | Non < planned < unplanned | |
| Hyperactivity/inattention | 2.78 | 2.11 | 2.53 | 2.01 | 3.24 | 2.28 | 3.57 | 2.13 | 6.04** | 0.04 | Non < planned, unplanned | |
| Peer problems | 2.11 | 1.58 | 2.00 | 1.57 | 2.09 | 1.55 | 2.72 | 1.60 | 3.38* | 0.02 | Non, planned < unplanned | |
| Total difficulties | 9.88 | 5.74 | 9.23 | 5.36 | 10.69 | 5.98 | 12.19 | 6.85 | 5.54** | 0.03 | Non < unplanned | |
| PHQ-A | 4.71 | 4.76 | 4.19 | 4.29 | 5.61 | 4.98 | 5.89 | 6.00 | 3.89* | 0.03 | ||
*p < 0.05, **p < 0.01, JPY = Japanese Yen (1,000 JPY = 9.12 USD).
SDQ = Strengths and Difficulties Questionnaire; PHQ-A = Patient Health Questionnaire for Adolescents.