Table 3.

The performance of 40-Hz SSR Grade III patients in prediction of 90-days poor outcome and 30-days mortality.

Outcome	Sensitivity	Specificity	PPV	NPV
90-days poor outcome	0.22 (0.13–0.34)	0.97 (0.80–1.00)	0.94 (0.68–1.00)	0.35 (0.25–0.46)
30-days mortality	0.34 (0.21–0.51)	0.91 (0.80–0.96)	0.74 (0.49–0.90)	0.65 (0.54–0.76)

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