Table 2.

Sensitivity, specificity, and positive (PPV) and negative (NPV) predictive values of the parent's and nurse's one-question screen and child's self-evaluation questions (no or mild concerns/problems versus more severe options) calculated against the DAWBA computer-predicted prevalence level of any diagnosis (<75% versus ≥75%) in a sample of Finnish 4–9-year-old children.

	High prevalence level of diagnosis
	Total sample				Boys				Girls				Preschoolers				School-aged children
	Sens1	Spec2	PPV3	NPV4	Sens1	Spec2	PPV3	NPV4	Sens1	Spec2	PPV3	NPV4	Sens1	Spec2	PPV3	NPV4	Sens1	Spec2	PPV3	NPV4
	%	%	%	%	%	%	%	%	%	%	%	%	%	%	%	%	%	%	%	%
Parent's one-question screen	(n = 637)				(n = 423)				(n = 214)				(n = 424)				(n = 213)
	68	87	41	95	73	86	45	96	50	89	30	95	70	90	44	96	65	82	39	93
Nurse's one-question screen	(n = 622)				(n = 411)				(n = 211)				(n = 414)				(n = 208)
	65	88	41	95	69	85	42	95	56	92	40	96	72	88	42	97	55	87	40	92
Child's self-evaluation
How are you?	(n = 629)				(n = 418)				(n = 211)				(n = 418)				(n = 211)
	7	98	26	89	8	97	25	88	6	99	33	92	10	97	29	91	3	98	20	86
What do you expect for     your near future?	(n = 628)				(n = 417)				(n = 211)				(n = 418)				(n = 210)
	9	94	16	89	6	95	14	87	18	93	19	93	10	94	15	91	7	96	20	86
Combined Child's self-evaluation	(n = 629)				(n = 418)				(n = 211)				(n = 418)				(n = 211)
	14	93	20	90	13	93	21	88	18	93	19	93	18	92	19	91	10	95	23	86
Combined parent's and nurse's one-question screen	(n = 613)				(n = 405)				(n = 208)				(n = 407)				(n = 206)
	79	80	34	97	85	77	36	97	61	84	27	96	84	82	35	98	72	75	32	94

¹Sensitivity; ²specificity; ³positive predictive value; ⁴negative predictive value.