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Demographic information for studies included in meta-analysis.
| Characteristic | IGD | ADHD | IGD controls | ADHD controls |
|---|---|---|---|---|
| Voxel-based morphometry | ||||
| Patients, no. | 333 | 1,051 | 335 | 887 |
| Male sex, no. (%) | 300 (90) | 811 (77) | 302 (90) | 639 (72) |
| Mean age, y | 21.3 | 20.3 | 21.43 | 21.3 |
| Functional magnetic resonance imaging | ||||
| Patients, no. | 603 | 878 | 564 | 803 |
| Male sex, no. (%) | 596 (99) | 540 (62) | 553 (98) | 448 (56) |
| Mean age, y | 21.3 | 15.4 | 21.2 | 15.8 |
