Table 2 Comparisons of sensitivity, specificity, agreement and predictive values of hypertension at increasing diagnostic thresholds
Variable | SBP ≥140 mmHg, DBP ≥90 mmHg and/or anti-hypertensive medications | SBP ≥150 mmHg, DBP ≥95 mmHg and/or anti-hypertensive medications | SBP ≥160 mmHg, DBP ≥100 mmHg and/or anti-hypertensive medications | ||||||
|---|---|---|---|---|---|---|---|---|---|
OBJ+ | OBJ– | Total | OBJ+ | OBJ– | Total | OBJ+ | OBJ– | Total | |
SR+ | 1,231 | 127 | 1,358 | 1,126 | 232 | 1,358 | 1,047 | 311 | 1,358 |
SR– | 872 | 2,646 | 3,518 | 417 | 3,101 | 3,518 | 234 | 3,284 | 3,518 |
Total | 2,103 | 2,773 | 4,876 | 1,543 | 3,333 | 4,876 | 1,281 | 3,595 | 4,876 |
Prevalence OBJ+ (%) | 43.1 (41.7, 44.5) | 31.6 (30.3, 33.0) | 26.3 (25.0, 27.5) | ||||||
Prevalence SR+ (%) | 27.9 (26.6, 29.1) | 27.9 (26.6, 29.1) | 27.9 (26.6, 29.1) | ||||||
Sensitivity (%) | 58.5 (56.4, 60.6) | 73.0 (70.8, 75.2) | 81.7 (79.6, 83.8) | ||||||
Specificity (%) | 95.4 (94.6, 96.2) | 93.0 (92.2, 93.9) | 91.3 (90.4, 92.3) | ||||||
PPV (%) | 90.6 (89.1, 92.2) | 82.9 (80.9, 84.9) | 77.1 (74.9, 79.3) | ||||||
NPV (%) | 75.2 (73.8, 76.6) | 88.1 (87.1, 89.2) | 93.3 (92.5, 94.2) | ||||||
Kappa (κ) | 0.564 (0.540, 0.586) | 0.682 (0.660, 0.704) | 0.717 (0.695, 0.739) | ||||||