Table 4.
Diagnostic performance of dialysis unit BP measurements by method 4
| Systolic BP (mmHg) |
Diastolic BP (mmHg) |
||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cut-point | Sensitivity | Specificity | LR+ | LR− | Cut-point | Sensitivity | Specificity | LR+ | LR− | ||||||||
| ≥ 125 | 98.1 | 45.8 | 1.81 | 0.04 | ≥ 70 | 96.4 | 43.0 | 1.69 | 0.08 | ||||||||
| ≥ 130 | 96.2 | 63.9 | 2.66 | 0.06 | ≥ 75 | 92.9 | 63.6 | 2.55 | 0.11 | ||||||||
| ≥ 135 | 90.4 | 75.9 | 3.75 | 0.13 | ≥ 80 | 75.0 | 79.4 | 3.65 | 0.31 | ||||||||
| ≥ 140 | 84.6 | 80.7 | 4.39 | 0.19 | ≥ 85 | 50.0 | 88.8 | 4.46 | 0.56 | ||||||||
| ≥ 145 | 73.1 | 86.8 | 5.51 | 0.31 | ≥ 90 | 32.1 | 94.4 | 5.73 | 0.72 | ||||||||
| ≥ 150 | 55.8 | 94.0 | 9.26 | 0.47 | ≥ 95 | 10.7 | 98.1 | 5.73 | 0.91 | ||||||||
| AUC (95% CI) | 0.90 (0.85–0.95) | 0.84 (0.77–0.92) | |||||||||||||||
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.