Table 1.
Baseline Characteristics
| Variables | NT (n = 1,804) | WCH (n = 123) | MH (n = 582) | SH (n = 518) | p Value * |
|---|---|---|---|---|---|
| Age, yrs† | 40 (34–48) | 49 (42–55) | 47 (41–54) | 50 (42–56) | <0.0001 |
| Men, % | 44.0 | 42.3 | 46.7 | 45.8 | 0.59 |
| Blacks, % | 41.7 | 63.4 | 55.8 | 68.9 | <0.0001 |
| Caucasians, % | 34.8 | 24.4 | 30.8 | 21.0 | <0.0001 |
| Hispanics, % | 21.1 | 12.2 | 12.4 | 8.1 | <0.0001 |
| HTN, % | 9.4 | 32.5 | 62.4 | 90.7 | <0.0001 |
| Anti-HTN meds, % | 12.8 | 35.0 | 29.6 | 39.1 | <0.0001 |
| Number of anti- HTN meds among treated‡ | 1.02 ± 0.84 | 1.19 ± 0.69 | 1.33 ± 0.74 | 1.37 ± 0.72 | <0.01 |
| DM, % | 6.7 | 21.1 | 17.2 | 21.2 | <0.0001 |
| BMI, kg/m2† | 28 (25–33) | 31 (27–38) | 31 (27–36) | 32 (27–36) | <0.0001 |
| Smokers, % | 26.2 | 26.8 | 29.6 | 32.4 | 0.038 |
| HL, % | 10.8 | 18.7 | 17.2 | 16.6 | <0.0001 |
| CKD, % | 4.8 | 13.3 | 9.6 | 19.3 | <0.0001 |
| CVD, % | 4.9 | 12.2 | 9.8 | 12.9 | <0.0001 |
| SBPH mm Hg‡ | 117 ± 10 | 123 ± 8 | 141 ± 12 | 154 ± 17 | <0.0001 |
| DBPH mm Hg‡ | 74 ± 7 | 76 ± 6 | 87 ± 7 | 92 ± 9 | <0.0001 |
| SBPC mm Hg‡ | 118 ± 10 | 146 ± 11 | 127 ± 8 | 153 ± 14 | <0.0001 |
| DBPC mm Hg‡ | 74 ± 7 | 88 ± 7 | 79 ± 7 | 91 ± 8 | <0.0001 |
*
p value comparing all 4 groups
†
Median (interquartile range)
‡
Mean ± SD
BMI = body mass index; CKD = chronic kidney disease; CVD = cardiovascular disease; DBPc = clinic diastolic blood pressure; DBPH = home diastolic blood pressure; DM = diabetes; HL = hyperlipidemia; HTN = hypertension; MH = masked hypertension; NT = normotension; SBPC = clinic systolic blood pressure; SBPH = home systolic blood pressure; SH = sustained hypertension; WCH = white coat hypertension.