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. 2014 Nov 11;3(6):e001089. doi: 10.1161/JAHA.114.001089

Table 2.

Cut‐off Values for ZRS, NT‐proBNP, and Combination of ZRS/NT‐proBNP

Cut‐off Value Sensitivity Specificity (95% CI)
ZRS <2 1.00 0.39 (0.35 to 0.42)
NT‐proBNP <200 pg/mL 1.00 0.62 (0.58 to 0.65)
Combination (serial) ZRS <2
or
NT‐proBNP <200 pg/mL		 1.00 0.70 (0.67 to 0.73)

P values between specificities. ZRS–NT‐proBNP: χ2=113.65, df=2, P<0.001; ZRS–combination: χ2=256, df=2, P<0.001; NT‐proBNP–combination: χ2=65, df=2, P<0.001. CI indicates confidence interval; NT‐proBNP, N‐terminal pro–brain natriuretic peptide; ZRS, Zwolle Risk Score.