Table 3.

Diagnostic efficiency estimates at varying SCQ total score cutoff values

SCQ Cutoff Value	Full Sample					Sex/Gender Comparisons
						Boys					Girls
	Sens	Spec	PPV	NPV	DLR	Sens	Spec	PPV	NPV	DLR	Sens	Spec	PPV	NPV	DLR
9	.98	.14	.21	.97	1.13	.98	.09	.26	.92	1.07	1.00	.21	.09	1.00	1.26
10	.96	.26	.23	.97	1.30	.96	.24	.29	.94	1.26	1.00	.30	.10	1.00	1.42
11	.92	.38	.26	.95	1.49	.91	.37	.32	.92	1.44	1.00	.40	.12	1.00	1.66
12	.84	.48	.27	.93	1.62	.82	.46	.33	.88	1.51	1.00	.51	.14	1.00	2.04
13	.80	.54	.29	.92	1.74	.77	.52	.35	.87	1.61	1.00	.57	.16	1.00	2.31
14	.80	.61	.32	.93	2.07	.77	.61	.40	.89	1.98	1.00	.61	.17	1.00	2.59
15	.80	.68	.37	.94	2.50	.77	.66	.43	.90	2.29	1.00	.71	.21	1.00	3.39
16	.76	.73	.39	.93	2.82	.73	.72	.46	.89	2.62	1.00	.74	.23	1.00	3.83
17	.75	.78	.44	.93	3.43	.71	.77	.51	.89	3.12	1.00	.80	.28	1.00	4.88
18	.73	.81	.46	.93	3.73	.68	.80	.53	.88	3.36	1.00	.82	.30	1.00	5.49
19	.67	.87	.55	.92	5.26	.61	.86	.59	.87	4.29	1.00	.90	.44	1.00	9.80
20	.61	.91	.61	.91	6.72	.57	.90	.66	.86	5.81	.86	.92	.46	.99	1.78
21	.57	.94	.67	.90	8.98	.52	.92	.70	.85	6.95	.86	.95	.60	.99	18.86

Note. Estimates for the standard SCQ cutoff value are in bold. Sens = sensitivity, spec = specificity, PPV = positive predictive value, NPV = negative predictive value, DLR = diagnostic likelihood ratio.