Table 6.

Test characteristics by varying MoCA score to predict severe cognitive impairment

Score Equal To or Less Thana	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	Classification Error (%)	Accuracy (%)
15	40	100	100	80	18	82
16	44	96	83	81	19	81
17	49	94	78	82	19	81
18	58	85	61	83	23	77
19	65	79	56	85	25	75
20	74	66	47	86	32	68
21	86	55	44	91	36	64
22	93	40	39	93	45	55
23	95	29	35	94	52	48
24	98	19	33	95	58	42
25	98	11	31	92	64	36
26	98	5	30	83	68	32
27	98	2	29	67	70	30
29a	100	0	29	0	71	29

Maximum MoCA score is 30. PPV, positive predictive value; NPV, negative predictive value.

^aNo individual had a score of 28.