Table 2.

Screening Properties of the PQ-16, Comprehensive Assessment of At-Risk Mental States (CAARMS) Diagnosis of UHR or Psychotic Threshold vs No CAARMS Diagnosis, Using Method A

PQ-16 Cutoff	Sensitivity	Specificity	PPV	NPV	True Positives	True Negatives	False Positives	False Negatives
Total group, n = 325
5	0.97	0.18	46.2	89.7	132	35	154	4
6	0.93	0.25	47.1	82.5	126	47	142	10
7	0.85	0.42	51.3	79.8	116	79	110	20
8	0.77	0.55	55.3	77.0	105	104	85	31
9	0.65	0.69	60.5	73.6	89	131	58	47
10	0.51	0.81	65.7	69.5	69	153	36	67
Girls, n = 217
5	0.98	016	50.8	90.0	100	18	97	2
6	0.92	0.23	51.4	76.5	94	26	89	8
7	0.87	0.38	55.6	77.2	89	44	71	13
8	0.78	0.55	60.3	73.3	79	63	52	23
9	0.70	070	67.0	72.1	71	80	35	31
10	0.55	0.83	73.7	67.4	56	95	20	46
Boys, n = 108
5	0.94	0.23	36.0	89.5	32	17	57	2
6	0.94	0.28	37.7	91.3	32	21	53	2
7	0.79	0.47	40.9	83.3	27	35	39	7
8	0.77	0.55	44.1	83.7	26	41	33	8
9	0.53	0.69	43.9	76.1	18	51	23	16
10	0.38	0.78	44.8	73.4	13	58	16	21

Note: Bold values represent the selected cutoff. NPV, negative predictive values; PPV, positive predictive values; PQ-16, Prodromal Questionnaire 16-item version; UHR, ultra-high risk.