A study of diagnostic accuracy of the Florida Obsessive-Compulsive Inventory – Thai Version (FOCI-T)

BMC Psychiatry

Table 3 The performance of FOCI-T Severity cut-off scores in detecting OCD

Cut-off score	Sensitivity	95 % CI	Specificity	95 % CI	+LR	-LR	PPV	NPV
Discrimination of OCD from non-OCD and healthy adults
≥3	0.97	0.86 – 0.99	0.72	0.65 – 0.79	3.52	0.04	0.46	0.99
≥4	0.95	0.82 – 0.99	0.76	0.69 – 0.83	3.96	0.07	0.48	0.98
≥5 *	0.92	0.79 – 0.98	0.82	0.76 – 0.88	5.23	0.10	0.56	0.98
≥6	0.84	0.69 – 0.94	0.86	0.80 – 0. 91	6.09	0.18	0.59	0.96
≥7	0.82	0.66 – 0.92	0.89	0.83 – 0.94	7.63	0.21	0.64	0.95
≥8	0.76	0.60 – 0.89	0.92	0.87 – 0.96	10.11	0.26	0.71	0.94
≥9	0.71	0.54 – 0.85	0.96	0.92 – 0.99	18.83	0.30	0.82	0.93
≥10	0.61	0.43 – 0.76	0.96	0.92 – 0.99	16.04	0.41	0.79	0.91
Discrimination of OCD from healthy adults
≥3	0.97	0.86 – 0.99	0.80	0.72 – 0.87	4.91	0.03	0.62	0.99
≥4	0.95	0.82 – 0.99	0.83	0.76 – 0.89	5.78	0.06	0.65	0.98
≥5 *	0.92	0.79 – 0.98	0.88	0.81 – 0.93	7.63	0.09	0.71	0.97
≥6	0.84	0.69 – 0.94	0.91	0.85 – 0.96	9.77	0.17	0.76	0.95
≥7	0.82	0.66 – 0.92	0.92	0.86 – 0.96	10.51	0.20	0.77	0.94

+LR Positive likelihood ratio, −LR Negative likelihood ratio, PPV Positive predictive value, NPV Negative predictive value. * and bold data Highest area under the ROC curve with a significance level (p=0.0001)

ISSN: 1471-244X