Table 2 Validation of self-monitoring of blood pressure for 3 days (cut-off point = 135.5/83 mmHg) for the control of hypertension. Gold standard: 24-h ambulatory blood pressure monitoring
Systolic hypertension | Diastolic hypertension | Joint HT | |||||||
|---|---|---|---|---|---|---|---|---|---|
Ep | 95%CI | Ep | 95%CI | Ep | 95%CI | ||||
Sensitivity (%) | 80.4 | 69.1 | 91.7 | 70.6 | 53.8 | 87.3 | 87.7 | 79.0 | 96.4 |
Specificity (%) | 74.2 | 65.0 | 83.4 | 85.7 | 79.0 | 92.4 | 62.5 | 51.8 | 73.2 |
Positive predictive value (%) | 64.3 | 52.4 | 76.2 | 58.5 | 42.2 | 74.8 | 63.3 | 52.8 | 73.8 |
Negative predictive value (%) | 86.7 | 78.8 | 94.6 | 91.1 | 85.3 | 96.8 | 87.3 | 78.3 | 96.3 |
Positive likelihood ratio | 3.1 | 2.2 | 6.5 | 4.9 | 1.7 | 4.9 | 2.3 | 2.6 | 9.91 |
Negative likelihood ratio | 0.3 | 0.22 | 0.46 | 0.3 | 0.1 | 0.3 | 0.2 | 0.3 | 0.6 |