Table 3.

ADHD Credibility Index Scores needed to ensure at least 90% specificity

Age Group (years)	Group	n	Total		n	Male		n	Female
			Cut-Off Score	% below		Cut-Off Score	% below		Cut-Off Score	% below
Total	Control + ADHD	1095	11	91.10	537	12	92.40	555	9	90.50
	Control Group	1000	8	91.70	493	9	90.70	504	7	91.50
	ADHD Group	95	21	94.70	44	21	95.50	51	20	90.20
18–29	Control + ADHD	141	13	91.50	53	16	92.50	87	12	92.00
	Control Group	109	12	92.70	36	15	91.70	72	8	93.10
	ADHD Group	32	17	93.80	17	17	94.10	15	17	93.30
30–39	Control + ADHD	221	16	90.00	92	17	91.30	129	14	90.70
	Control Group	191	12	90.60	80	16	90.00	111	8	91.00
	ADHD Group	30	21	93.30	12	21	100.0	18	23	94.40
40–49	Control + ADHD	244	11	90.20	116	12	93.10	127	10	90.60
	Control Group	228	9	90.80	111	11	91.00	116	6	90.50
	ADHD Group	16	18	93.80	5	13	100.0	12	18	90.90
50 +	Control + ADHD	487	6	91.80	274	6	91.20	212	6	92.50
	Control Group	470	5	91.90	264	5	91.70	205	5	92.20
	ADHD Group	17	27	94.10	10	27	100.0	7	22	100.0

Data shown here are based on credible participants’ responses only