Table 1.
Clinical and laboratory characteristics of 21 patients with essential hypertension and 20 normotensive controls
| Patients | Controls | t-test | |
|---|---|---|---|
| Men/women | 14/7 | 12/8 | |
| Age (years) | 55 (9) | 48 (9) | P = 0.102 |
| BMI (kg m-2) | 25.6 (2.5) | 24.2 (2.7) | P = 0.160 |
| p-sodium (mmol l-1) | 139.4 (2.1) | 139.6 (2.2) | P = 0.798 |
| p-potassium (mmol l-1) | 3.9 (0.4) | 3.9 (0.3) | P = 0.992 |
| p-creatinine (μmol l-1) | 74.9 (9.4) | 72.9 (10.9) | P = 0.532 |
| 24-h ambulatory | |||
| SBP (mmHg) | 144 (11) | 119 (6) | P < 0.001 |
| DBP (mmHg) | 87 (7) | 75 (4) | P < 0.001 |
| HR (beats min-1) | 71 (13) | 68 (7) | P = 0.503 |
| Daytime ambulatory | |||
| SBP (mmHg) | 148 (11) | 124 (7) | P < 0.001 |
| DBP (mmHg) | 90 (8) | 78 (4) | P < 0.001 |
| HR (beats min-1) | 74 (13) | 71 (7) | P = 0.468 |
| Nighttime ambulatory | |||
| SBP (mmHg) | 126 (12) | 104 (12) | P < 0.001 |
| DBP (mmHg) | 76 (9) | 63 (4) | P < 0.001 |
| HR | 59 (10) | 56 (9) | P = 0.487 |
Values are means (SD). Student's t-test.