Table 1. Baseline characteristics of the study participants.
| Total Population (n = 41) | Low BNP (n = 14) | High BNP (n = 27) | P | |
| Age, yr | 65±9 | 63.2±9.4 | 66.6±9.4 | 0.28 |
| Gender, male | 18 (44) | 7 (50) | 11 (41) | 0.81 |
| BMI, kg/m2 | 28±6 | 27.5±7.2 | 28.2±5.7 | 0.74 |
| SBP, mmHg | 150±19 | 146±18 | 151±19 | 0.38 |
| DBP, mmHg | 77±10 | 75±11 | 78±11 | 0.4 |
| PP, mmHg | 72±18 | 71±18 | 73±19 | 0.69 |
| Diabetes | 10 (24) | 3 (21) | 7 (26) | 0.99 |
| Biochemical parameters | ||||
| Sodium, mmol/l | 138±4 | 138±4 | 139±3 | 0.35 |
| Potassium, mmol/l | 4.2±0.4 | 4.1±0.3 | 4.3±0.4 | 0.14 |
| Urea, mmol/l | 6.2±1.7 | 6.1±1.1 | 6.3±2.0 | 0.62 |
| Creatinine, mg/dl | 1.03±0.27 | 1.04±0.24 | 1.02±0.28 | 0.78 |
| Hemoglobin, g/dl | 13.1±1.9 | 12.6±2.1 | 13.4±1.7 | 0.21 |
| eCrCl, ml/min | 78±29 | 81±36 | 77±26 | 0.7 |
| Calcium, mg/dl | 9.1±0.5 | 9.0±0.6 | 9.2±0.5 | 0.42 |
| Alkaline Phosphatase, U/L | 77±30 | 80±3.2 | 76±28 | 0.72 |
| Medications | ||||
| ACEi/ARB | 29 (71) | 9 (64) | 20 (74) | 0.72 |
| β-blocker | 22 (54) | 4 (29) | 18 (66) | 0.03 |
| Statin | 25 (61) | 9 (64) | 16 (59) | 0.99 |
Data are presented as mean ± SD or as number (percentage).
BMI = body mass index; SBP = systolic blood pressure; DBP = diastolic blood pressure; PP = pulse pressure; eCrCl = estimated creatinine clearance; ACEi = angiotensin converting enzyme inhibitor; ARB = angiotensin receptor antagonist.