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. 2008 Sep;3(5):1364–1372. doi: 10.2215/CJN.01510308

Table 6.

Diagnostic performance of single dialysis unit diastolic BP measurement at median

Diastolic BP Cut-point (mmHg) Median Diastolic BP (mmHg): First Dialysis
Median Diastolic BP (mmHg): Second Dialysis
Median Diastolic BP (mmHg): Third Dialysis
Sensitivity Specificity LR+ LR Sensitivity Specificity LR+ LR Sensitivity Specificity LR+ LR
≥ 70 96.4 43.0 1.69 0.08 85.7 44.9 1.55 0.32 100.0 54.2 2.18 0.00
≥ 75 85.7 57.9 2.04 0.25 82.1 60.8 2.09 0.29 89.3 68.2 2.81 0.16
≥ 80 78.6 72.0 2.80 0.30 75.0 71.0 2.59 0.35 75.0 83.2 4.46 0.30
≥ 85 60.7 80.4 3.09 0.49 42.9 84.1 2.70 0.68 60.7 88.8 5.41 0.44
≥ 90 39.3 87.9 3.23 0.69 35.7 88.8 3.19 0.72 32.1 93.5 4.91 0.72
≥ 95 25.0 94.4 4.46 0.79 32.1 91.6 3.82 0.74 14.3 95.3 3.06 0.90
AUC (95% CI) 0.81 (0.73–0.89) 0.78 (0.68–0.87) 0.87 (0.81–0.93)
Youden Index 0.53 0.51 0.65
BP cut-point at Youden Index 78.0 78.0 78.0
% correct classification at Youden Index 71.1% 71.9% 80.7%

BP, blood pressure; LR+, likelihood ratio for positive test result; LR, likelihood ratio for negative test result; AUC, area under receiver operating characteristic curve; CI, confidence interval.