Table 3. Sensitivities, specificities, positive and negative predictive values of existing syncope rules in predicting composite outcomes.

Statistics	CSRS (95% CI)	EGSYS (95% CI)	SFSR (95% CI)	ROSE (95% CI)
48-h composite outcomes sensitivity	0.48 (0.31–0.66)	0.65 (0.48–0.81)	0.42 (0.25–0.59)	0.19 (0.05–0.33)
Specificity	0.76 (0.71–0.81)	0.50 (0.45–0.56)	0.89 (0.83–0.91)	0.91 (0.88–0.94)
Positive predictive value	0.16 (0.88–0.24)	0.11 (0.06–0.16)	0.24 (0.12–0.35)	0.17 (0.05–0.30)
Negative predictive value	0.94 (0.91–0.97)	0.94 (0.90–0.97)	0.94 (0.91–0.97)	0.92 (0.89–0.95)
30-day composite outcomes
Sensitivity	0.72 (0.62–0.83)	0.65 (0.54–0.76)	0.30 (0.20–0.41)	0.55(0.43–0.67)
Specificity	0.67 (0.61–0.72)	0.53 (0.47–0.59)	0.88 (0.84–0.92)	0.67 (0.61–0.72)
Positive predictive value	0.35 (0.27–0.43)	0.25 (0.19–0.32)	0.38 (0.25–0.51)	0.29 (0.21–0.37)
Negative predictive value	0.91 (0.87–0.95)	0.86 (0.81–0.91)	0.84 (0.80–0.88)	0.86 (0.81–0.90)