Table 2.

Prediction of Clinical Response Based on Clinical Global Impressions – Improvement (CGI-I) Scale Ratings (Much Improved or Very Much Improved) Using Percent Reduction of Symptoms on the Six Item Pediatric Anxiety Rating Scale (PARS6)

PARS reduction (%)	Sensitivity	Specificity	PPV	NPV	Efficiency	k
≥5	0.92	0.54	0.80	0.76	0.80	0.50
≥10	0.90	0.58	0.81	0.74	0.80	0.51
≥15	0.90	0.71	0.86	0.77	0.84	0.62
≥20	0.90	0.79	0.90	0.79	0.86	0.69
≥25	0.82	0.92	0.95	0.71	0.85	0.68
≥30	0.76	0.96	0.97	0.66	0.82	0.64
≥35	0.65	0.96	0.97	0.58	0.75	0.52
≥40	0.55	1.00	1.00	0.52	0.70	0.45
≥45	0.49	1.00	1.00	0.49	0.66	0.39
≥50	0.43	1.00	1.00	0.46	0.62	0.33
≥55	0.33	1.00	1.00	0.42	0.55	0.24
≥60	0.29	1.00	1.00	0.41	0.52	0.21
≥65	0.20	1.00	1.00	0.38	0.47	0.14
≥70	0.18	1.00	1.00	0.38	0.45	0.13

PPV, positive predictive value; NPV, negative predictive value.