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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

From: Validity of self blood pressure measurement in the control of the hypertensive patient: factors involved

  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
  1. Prevalence of uncontrolled status: 42.5%
  2. Ep point estimate, HT hypertension, % percentage, 95% CI 95% confidence interval
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