Table 3.
Diagnostic characteristics for the sit-to-stand test across different cut-points for orthostatic hypotension.
| A. Systolic Blood Pressure | |||||||
|---|---|---|---|---|---|---|---|
|
| |||||||
| SBP drop cutoff | Sens (%) | Spec (%) | LR+ | LR− | PPV (%) | NPV (%) | Youden statistic |
| 20 | 72.3 | 94.1 | 12.3 | 0.29 | 90.1 | 82.1 | 0.664 |
| 15 | 80.2 | 88.9 | 7.2 | 0.22 | 84.2 | 85.8 | 0.691 |
| 10 | 87.6 | 79.7 | 4.3 | 0.16 | 76.2 | 89.6 | 0.672 |
| 5 | 92.4 | 64.6 | 2.6 | 0.12 | 65.9 | 91.9 | 0.569 |
| 0 | 95.5 | 43.8 | 1.7 | 0.10 | 55.8 | 92.9 | 0.392 |
| B. Diastolic Blood Pressure | |||||||
|---|---|---|---|---|---|---|---|
|
| |||||||
| DBP drop cutoff | Sens (%) | Spec (%) | LR+ | LR− | PPV (%) | NPV (%) | Youden statistic |
| 10 | 80.3 | 93.8 | 13.0 | 0.21 | 88.4 | 89.0 | 0.741 |
| 7 | 87.2 | 87.2 | 6.8 | 0.15 | 80.1 | 92.0 | 0.744 |
| 5 | 81.5 | 80.7 | 4.7 | 0.11 | 73.6 | 94.1 | 0.721 |
| 3 | 93.1 | 73.0 | 3.4 | 0.09 | 67.0 | 94.7 | 0.660 |
| 0 | 94.4 | 57.1 | 2.2 | 0.10 | 54.4 | 94.7 | 0.515 |
Abbreviations: SBP, systolic blood pressure; DBP, diastolic blood pressure; Sens, sensitivity; Spec, specificity; LR+, positive likelihood ratio; LR− negative likelihood ratio; PPV, positive predictive value; NPV, negative predictive value.