Table 1.
Methods used to identify people with Internet gaming disorder
| Method | Range‡ | No. of studies | |
|---|---|---|---|
| 1 | C-IGDS | 0–9* | 1 |
| 2 | C-VAT 2.0 | NA | 1 |
| 3 | DQVMIA | NR | 1 |
| 4 | DSM-5 criteria for IGD | 0–9 | 48 |
| 5 | DSM-5 questionnaire - German | 0–9* | 1 |
| 6 | GAIT | 0–52 | 1 |
| 7 | Health professional applying the DSM-5 IGD criteria | NA | 46 |
| 8 | IGD Checklist - 12 items | 0–9* | 3 |
| 9 | IGD Checklist - 9 items | 0–9* | 5 |
| 10 | IGD Scale - 27 item dichotomous | 0–27 | 1 |
| 11 | IGD Scale - 27 item polytomous | 0–135* | 2 |
| 12 | IGD Scale - 27 item polytomous – Turkish | 0–135* | 1 |
| 13 | IGD Scale - 9 item | 0–9 | 2 |
| 14 | IGD Scale - 9 item dichotomous | 0–9 | 9 |
| 15 | IGD Scale - 9 item polytomous - Turkish | 0–45* | 1 |
| 16 | IGD Scale - dichotomous | 0–27 | 1 |
| 17 | IGD Scale - polytomous | 0–135* | 2 |
| 18 | IGD-20 Test | 20 –100* | 1 |
| 19 | IGD-20 Test – Spanish | 20–100* | 1 |
| 20 | IGD-9 Scale | 0–9 | 1 |
| 21 | IGDI | NA | 1 |
| 22 | IGDQ – German | 0–9* | 2 |
| 23 | IGDS9-SF | 9–45 | 16 |
| 24 | IGDS9-SF – Italian | 9–45* | 3 |
| 25 | IGDT-10 | 0–9 | 3 |
| 26 | Internet Gaming Addiction Scale | 0–7* | 1 |
| 27 | K-scale - Korean Internet Addiction Scale for Adolescents | 20––80 | 1 |
| 28 | PIE-9 | 9–45* | 1 |
| 29 | Problem gaming instrument | 0–11* | 1 |
| 30 | PVP Scale | 0–9 | 4 |
| 31 | SCI-IGD | NA | 1 |
| 32 | VAT | 0–56* | 1 |
| 33 | VGA questionnaire (revised) | 15–45* | 1 |
| 34 | VGAQ | 9–45* | 1 |
| 35 | Video Game Dependency Scale | 18–72* | 1 |
NA not applicable (the method is not based on a numerical score); NR not reported (information not provided in the included study); C-IGDS Chinese Internet Gaming Disorder Scale; C-VAT Clinical Video game Addiction Test; DQVMIA: Diagnostic Questionnaires for Video Games, Mobile Phone or Internet Addiction; GAIT The Gaming Addiction Identification Test; IGD Internet Gaming Disorder; IGDI Internet Gaming Disorder Interview; IGDQ Internet Gaming Disorder Questionnaire; IGDS9-SF Internet Gaming Disorder Scale - Short Form; IGDT-10 Ten-Item Internet Gaming Disorder Test; PIE-9 Personal Internet Gaming Disorder Evaluation; PVP Scale Problematic Videogame Playing Scale; SCI-IGD Structured Clinical Interview for Internet Gaming Disorder; VAT Video game Addiction Test; VGA Video Game Addiction; VGAQ Video Game Addiction Questionnaire
‡Lower to upper limit of responses
*Range was calculated using reported data