Table 4.
Comparison of Subgroups Defined by Office and Home Blood Pressure
| Covariate | Normotension (n=90) | White‐Coat Hypertension (n=41) | Masked Hypertension (n=41) | Sustained Hypertension (n=85) | P Value |
|---|---|---|---|---|---|
| Age, y | 63.7±10.2 | 63.9±12.6 | 65.3±9.6 | 62.4±12.9 | .606 |
| Men, % | 47 | 59 | 44 | 55 | .386 |
| Body mass index, kg/m2 | 23.9±3.2 | 24.3±3.4 | 24.8±3.6 | 24.9±3.4 | .238 |
| Current smoker, % | 6.7 | 9.8 | 15 | 15 | .282 |
| Regular drinker, % | 17 | 27 | 24 | 19 | .505 |
| Antihypertensive medication, % | 73 | 71 | 80 | 76 | .793 |
| Hyperlipidemia, % | 46 | 17a | 32 | 27 | .006 |
| Diabetes mellitus, % | 26 | 12 | 34 | 19 | .078 |
| Office systolic blood pressure, mm Hg | 124±10 | 147±6b | 130±7b,c | 152±12b,d | <.001 |
| Office diastolic blood pressure, mm Hg | 74±8 | 83±8b | 75±9e | 88±13b,d | <.001 |
| Office pulse rate, beats per min | 72±10 | 74±13 | 69±13 | 74±13 | .211 |
| Home systolic blood pressure, mm Hg | 122±9 | 128±6f | 144±9b,c | 148±14b,c | <.001 |
| Home diastolic blood pressure, mm Hg | 71±8 | 72±7 | 79±11b,g | 84±13b,c | <.001 |
| Home pulse rate, beats per min | 66±9 | 67±9 | 67±10 | 69±10 | .467 |
| Total cholesterol, mg/dL | 196±33 | 202±31 | 198±33 | 208±32 | .100 |
| Triglycerides, mg/dL | 130±86 | 117±75 | 131±69 | 137±91 | .667 |
| Fasting glucose, mg/dL | 108±26 | 107±14 | 116±31 | 109±31 | .318 |
| Hemoglobin A1c, % | 5.5±.8 | 5.3±.6 | 5.9±1.0e,f | 5.5±.8 | .007 |
a P<.01. b P<.001 vs normotension. c P<.001 vs white‐coat hypertension. d P<.001 vs masked hypertension. e P<.01 vs. white‐coat hypertension. f P<.05 vs. normotension. g P<.05 vs. white‐coat hypertension by Bonferroni's analysis. [Correction added after online publication 25‐Jun‐2013: The P value information has been updated.]