Table 3.

Sensitivity, specificity, PPV and NPV of NIHSS identifying dependence as measured by residence and GOS

NIHSS score	Sensitivity, %	Specificity, %	PPV, %	NPV, %
By residence
≥5 (94)	72 (62–81)	92 (88–94)	72	92
≥10 (46)	40 (31–51)	98 (95–99)	85	83
≥13 (25)	23 (15–32)	99 (98–100)	96	79
≥15 (18)	24 (16–34)	100 (99–100)	100	80
By GOS
≥5 (94)	87 (79–95)	89 (86–92)	64	97
≥10 (47)	55 (43–67)	97 (96–99)	83	91
≥13 (25)	35 (23–46)	99 (98–100)	96	87
≥15 (18)	26 (16–36)	100 (99–100)	100	86

Figures in parentheses indicate number or 95% CIs.