Table 3.
Diagnostic agreement in hypertension classification.
| OD | AD |
% Agreed
[95% CI] |
Weighted kappa
[95% CI] |
P value for symmetry test | ||||
|---|---|---|---|---|---|---|---|---|
| SBP, mm Hg | <120 | 120 to <140 | ≥140 | All | 83.1% [78.2%–87.3%] |
0.76 [0.70–0.83] |
.0222 | |
| <120 | 137 | 8 | 0 | 145 (52.2%) | ||||
| 120 to <140 | 26 | 67 | 6 | 99 (35.6%) | ||||
| ≥140 | 0 | 7 | 27 | 34 (12.2%) | ||||
| All | 163 (58.6%) | 82 (29.5%) | 33 (11.9%) | 278 | ||||
| DBP, mm Hg | <80 | 80 to <90 | ≥90 | All | 80.6% [75.4%–85.1%] |
0.62 [0.53–0.72] |
<.0001 | |
| <80 | 181 | 44 | 1 | 226 (81.3%) | ||||
| 80 to <90 | 3 | 28 | 5 | 36 (12.9%) | ||||
| ≥90 | 0 | 1 | 15 | 16 (5.8%) | ||||
| All | 184 (66.2%) | 73 (26.3%) | 21 (7.6%) | 278 | ||||
| Categorization § | Normal | Pre-hypertension | Hypertension | All | 81.3% [76.2%–85.7%] |
0.75 [0.68–0.81] |
.7450 | |
| Normotension | 118 | 23 | 0 | 141 (50.7%) | ||||
| Prehypertension | 17 | 74 | 7 | 98 (35.3%) | ||||
| Hypertension | 0 | 5 | 34 | 39 (14.0%) | ||||
| All | 135 (48.6%) | 102 (36.7%) | 41 (14.7%) | 278 |
CI = confidence interval, DBP = diastolic blood pressure, N = number, SBP = systolic blood pressure.
OD, BP measurements recorded with the HEM device; AD, BP measurements recorded with the Greenlight device.
§
Normotension: SBP < 120 mm Hg and DBP < 80 mm Hg; Prehypertension: SBP:120 to < 140 mm Hg or DBP 80 to < 90 mm Hg; Hypertension: SBP ≥ 140 and/or DBP ≥ 90 mm Hg.