Table 3 Agreement between 24-h mean ABP and day versus night ABP for diagnosing ambulatory normotension/hypertension
Variable | Accuracy (%)a) (95th CI) | Kappa (95% CI) |
|---|---|---|
Day ABP threshold | ||
 Entire group (n = 450) | 91 (0.82–1.06) | 0.77 (0.70–0.83) |
 Age ≥ 13 yr (n = 267) | 91 (0.80–1.03) | 0.73 (0.63–0.83) |
 Male sex (n = 267) | 92 (0.81–1.05) | 0.82 (0.74–0.89) |
 Overweight/obese (n = 248) | 91 (0.79–1.03) | 0.77 (0.69–0.86) |
 Primary hypertension (n = 352) | 90 (0.80–1.01) | 0.77 (0.69–0.84) |
 Secondary hypertension (n = 98) | 93 (0.75–1.15) | 0.71 (0.50–0.93) |
 No BP medication (n = 322) | 90 (0.79–1.01) | 0.76 (0.68–0.84) |
 On BP medication (n = 128) | 94 (0.78–1.12) | 0.76 (0.60–0.93) |
Night ABP threshold | ||
 Entire group (n = 450) | 78 (0.70–0.87) | 0.52 (0.44–0.60) |
 Age ≥ 13 yr (n = 267) | 73 (0.63–0.84) | 0.39(0.29–0.50) |
 Male sex (n = 267) | 78 (0.68–0.90) | 0.57(0.47–0.68) |
 Overweight/obese (n = 248) | 79 (0.69–0.91) | 0.55(0.45–0.66) |
 Primary hypertension (n = 352) | 76 (0.67–0.85) | 0.49 (0.40–0.58) |
 Secondary hypertension (n = 98) | 88 (0.71–1.09) | 0.60 (0.39–0.81) |
 No BP medication (n = 322) | 75 (0.66–0.85) | 0.48 (0.39–0.58) |
 On BP medication (n = 128) | 87 (0.72–1.05) | 0.59 (0.41–0.76) |