Table 1.
Baseline characteristics of study participants according to hemoconcentration status
| Total (N=390) | Negative HC (N=38) | Positive HC (N=31) | P | |
|---|---|---|---|---|
| Age (years) | 70.5±11.9 | 71.0±12.1 | 72.1±10.5 | 0.70* |
| Gender (male) | 261 (66.9) | 26 (68.4) | 24 (77.4) | 0.40** |
| BMI (kg/m2) | 26.7±4.8 | 25.0±3.8 | 28.6±4.5 | 0.01* |
| SBP (mmHg) | 132.8±28.2 | 125.1±22.5 | 131.7±27.1 | 0.27* |
| DBP (mmHg) | 82.2±16.5 | 78.4±13.3 | 80.1±15.0 | 0.61* |
| Hb (g/dl) | 13.2±4.2 | 13.0±2.2 | 10.6±2.2 | <0.001* |
| BUN (mg/dl) | 27.6±17.1 | 39.6±28.6 | 37.3±27.2 | 0.76* |
| Cr (mg/dl) | 1.6±1.2 | 1.8±1.3 | 2.3±1.9 | 0.23* |
| Follow-up duration (days) | 245.8±122.5 | 219.0±130.2 | 272.6±110.6 | 0.13* |
| Positive ischemic heart disease | 318 (82.4) | 29 (78.4) | 20 (66.7) | 0.28** |
| Positive COPD | 40 (10.3) | 5 (13.2) | 6 (19.4) | 0.48** |
| Positive renal diseases | 96 (24.8) | 9 (23.7) | 11 (35.5) | 0.28** |
| Positive hypertension | 254 (65.6) | 27 (71.1) | 19 (61.3) | 0.39** |
| Positive diabetes mellitus | 184 (47.2) | 21 (55.3) | 17 (54.8) | 0.97** |
| Positive myocardial infarction | 126 (32.6) | 8 (21.1) | 8 (25.8) | 0.64** |
| Readmission | 65 (16.7) | 3 (9.7) | 6 (15.8) | 0.45** |
| Death | 62 (15.9) | 27 (71.1) | 24 (77.4) | 0.54** |
*P values are obtained from Independent T-test. **P values are obtained from Chi-square Test. BMI=Body mass index, SBP=Systolic blood pressure, DBP=Diastolic blood pressure, Hb=Hemoglobin, BUN=Blood urea nitrogen, Cr=Creatinine, COPD=Chronic obstructive pulmonary diseases