Table 3.

Analysis for setting the cutoff level of the draft screening test

		Gaming disorder (+)		Gaming disorder (−)		Sensitivity	Specificity	Positive predictive value	Positive Likelihood ratio	Youden Index
		Yes	No	Yes	No
8-item screening testa)
Analysis on combined subjectsc)	≥2 points	51	0	98	176	1.00	0.64	0.34	2.80	0.64
	≥3 points	50	1	34	240	0.98	0.88	0.60	7.90	0.86
	≥4 points	48	3	9	265	0.94	0.97	0.84	28.65	0.91
	≥5 points	42	9	2	272	0.82	0.99	0.95	112.82	0.82
	≥6 points	33	18	0	274	0.65	1.00	1.00	∞	0.65
Analysis confined to the general population	≥2 points	7	0	98	176	1.00	0.64	0.07	2.80	0.64
	≥3 points	7	0	34	240	1.00	0.88	0.17	8.06	0.88
	≥4 points	6	1	9	265	0.86	0.97	0.40	26.10	0.82
	≥5 points	2	5	2	272	0.29	0.99	0.50	39.14	0.28
	≥6 points	0	7	0	274	0.00	1.00	0.00	0.00	0.00
9-item screening test (GAMES test)b)
Analysis on combined subjectsc)	≥3 points	51	0	61	213	1.00	0.78	0.46	4.49	0.78
	≥4 points	51	0	22	252	1.00	0.92	0.70	12.45	0.92
	≥5 points	50	1	5	269	0.98	0.98	0.91	53.73	0.96
	≥6 points	46	5	2	272	0.90	0.99	0.96	123.57	0.89
	≥7 points	39	12	0	274	0.76	1.00	1.00	∞	0.76
Analysis confined to the general population	≥3 points	7	0	61	213	1.00	0.78	0.10	4.49	0.78
	≥4 points	7	0	22	252	1.00	0.92	0.24	12.45	0.92
	≥5 points	7	0	5	269	1.00	0.98	0.58	54.80	0.98
	≥6 points	4	3	2	272	0.57	0.99	0.67	78.29	0.56
	≥7 points	1	6	0	274	0.14	1.00	1.00	∞	0.14

a) A screening test reflecting 4 key elements in the definition of gaming disorder.

b) A screening test including the time spent gaming on weekdays.

c) Combined subjects of the general population and treatment seekers.