Table 3.

Diagnostic validity, utility and prognostic value of the ICD‐11 clinical guidelines for GD.

Criterion	Diagnostic validity	Clinical utility	Prognostic value
1. Impaired control over gaming (e.g. onset, frequency, intensity, duration, termination, context)	93.1% in round 1	93.1% in round 1	82.8% in round 1
2. Increasing priority given to gaming to the extent that gaming takes precedence over other life interests and daily activities	82.8% in round 1	79.3% in round 2	75.9% in round 2
3. Continuation or escalation of gaming despite the occurrence of negative consequences	93.1% in round 1	96.6% in round 1	86.2% in round 1
4. The behaviour pattern is of sufficient severity to result in significant impairment in personal, family, social, educational, occupational or other important areas of functioning	100% in round 1	89.7% in round 1	89.7% in round 1

Cells marked in green indicate that the criterion reached agreement for inclusion (i.e. ≥ 80% of experts rated the criterion as ‘very important’ or ‘extremely important’); cells marked in red indicate that the criterion reached agreement for exclusion (i.e. ≤ 20% of experts rated the criterion as ‘very important’ or ‘extremely important’); cells marked in yellow indicate that the criterion did not reach agreement either for inclusion or for exclusion (i.e. > 20% of experts but < 80% rated the criterion as ‘very important’ or ‘extremely important’); figures within each cell represent the percentage of experts scoring the criterion as ‘very important’ or ‘extremely important’ in the last round that the criterion was rated. GD = gaming disorder. [Colour table can be viewed at wileyonlinelibrary.com]