Table I.
Patient Characteristics
| Variable | All (N=95) | Dippers (n=52) | Nondippers (n=43) | P Value |
|---|---|---|---|---|
| Age, y | 62±8 | 62±6 | 62±9 | .879 |
| Body mass index, kg/m2 | 30±5 | 30±5 | 29±5 | .254 |
| Sex, % men | 52 | 52 | 51 | 1.00 |
| 24‐H ambulatory SBP, mm Hg | 131±11 | 129±8 | 133±13 | .114 |
| 24‐H ambulatory DBP, mm Hg | 77±7 | 76±6 | 78±8 | .234 |
| Daytime SBP, mm Hg | 134±11 | 134±9 | 134±14 | .786 |
| Daytime DBP, mm Hg | 79±7 | 79±7 | 79±8 | .971 |
| Nighttime SBP, mm Hg | 119±14 | 112±9 | 128±14 | <.001 |
| Nighttime DBP, mm Hg | 69±9 | 65±7 | 74±9 | <.001 |
| Plasma glucose, mmol/L | 5.7±1.1 | 5.7±1.1 | 5.6±1.0 | .429 |
| Triglycerides, mmol/L | 1.7±1.1 | 1.7±1.3 | 1.6±0.9 | .583 |
| HDL cholesterol, mmol/L | 1.5±0.6 | 1.5±0.7 | 1.3±0.5 | .098 |
| LDL cholesterol, mmol/L | 3.0±0.9 | 3.0±0.8 | 3.1±1.0 | .805 |
| ACE inhibitor, % | 31 | 35 | 28 | .632 |
| AR blocker, % | 61 | 64 | 58 | .750 |
| Calcium channel blocker, % | 18 | 21 | 14 | .521 |
| β‐Blocker, % | 13 | 10 | 16 | .507 |
| Diuretic, % | 22 | 21 | 23 | 1.00 |
| α‐Blocker, % | 1 | 2 | 0 | 1.00 |
Abbreviations: ACE, angiotensin‐converting enzyme; AR, angiotensin receptor; DBP, diastolic blood pressure; HDL, high‐density lipoprotein; LDL, low‐density lipoprotein; SBP, systolic blood pressure. Data are expressed as mean±standard deviation. P values are for dippers compared with nondippers.