Table 2.
Baseline characteristics of subjects by the quartile of red cell distribution width
| RDW | |||||
|---|---|---|---|---|---|
| quartile 1 | quartile 2 | quartile 3 | quartile4 | P | |
| (RDW < 12.8,n = 69) | (RDW 12.8–13.3,n = 89) | (RDW 13.4 ~ 14.2,n = 95) | (RDW > 14.2,n = 88) | ||
| Age (year) | 87.25 ± 4.76 | 86.31 ± 5.43 | 88.46 ± 5.25 | 87.55 ± 4.92 | 0.067 |
| Male (n, %) | 67 (97.10) | 85 (95.51) | 94 (98.95) | 82 (93.18) | 0.210 |
| Smoking history (n, %) | 23 (33.33) | 35 (39.33) | 34 (35.79) | 31 (35.23) | 0.882 |
| Prior MI (n, %) | 20 (28.99) | 20 (22.47) | 22 (23.15) | 24 (27.27) | 0.166 |
| Prior stent (n, %) | 7 (10.14) | 11 (12.36) | 3 (3.15) | 8 (9.10) | 0.099 |
| Heart failure (n, %) | 7 (10.16) | 17 (19.10) | 17 (17.89) | 26 (29.55) | 0.022 |
| Hyperlipidemia (n, %) | 38 (55.07) | 39 (43.82) | 44 (46.31) | 56 (63.64) | 0.034 |
| CKD (n, %) | 14 (20.21) | 23 (25.83) | 24 (25.26) | 36 (40.91) | 0.021 |
| DM (n, %) | 38 (55.07) | 44 (49.43) | 47 (49.47) | 38 (43.18) | 0.527 |
| Anemia (n, %) | 15 (21.73) | 26 (29.21) | 39 (41.05) | 45 (51.10) | 0.011 |
| SBP(mmHg) | 132.52 ± 18.27 | 132.17 ± 18.43 | 131.28 ± 19.04 | 135.21 ± 18.72 | 0.529 |
| DBP (mmHg) | 70.56 ± 15.08 | 61.62 ± 10.51 | 68.52 ± 11.19 | 65.71 ± 10.95 | 0.062 |
| Hypertension with very high risk (n, %) | 67 (97.10) | 85 (95.50) | 92 (96.84) | 87 (98.86) | 0.778 |
| BMI (kg/m2) | 24.73 ± 3.17 | 23.77 ± 2.86 | 23.91 ± 3.21 | 24.26 ± 3.15 | 0.300 |
| Hemoglobin (g/l) | 128.79 ± 13.67 | 125.04 ± 16.80 | 122.29 ± 16.87 | 117.52 ± 19.77 | 0.010 |
| WBC (*109/l) | 7.67 ± 3.78 | 7.37 ± 3.21 | 8.15 ± 3.53 | 8.75 ± 3.75 | 0.061 |
| Platelet (*109/l) | 173.83 ± 49.55 | 179.10 ± 52.42 | 180.41 ± 52.30 | 186.13 ± 72.84 | 0.612 |
| PDW (%) | 10.60 ± 3.42 | 11.27 ± 2.48 | 11.88 ± 1.73 | 11.43 ± 1.63 | 0.049 |
| Creatinine (umol/l) | 96.29 ± 28.91 | 102.37 ± 34.73 | 109.86 ± 34.74 | 125.03 ± 72.26 | 0.040 |
| GFR (ml/min) | 78.48 ± 29.16 | 74.02 ± 26.46 | 72.51 ± 32.65 | 68.50 ± 35.67 | 0.252 |
| FBG (mmol/l) | 7.26 ± 2.83 | 6.83 ± 2.51 | 6.98 ± 2.50 | 7.01 ± 2.57 | 0.787 |
| Fe (umol/l) | 13.73 ± 8.23 | 15.09 ± 9.53 | 12.15 ± 6.06 | 11.91 ± 7.41 | 0.029 |
| TC (mmol/l) | 2.87 ± 2.00 | 2.83 ± 1.78 | 2.50 ± 1.97 | 2.53 ± 1.87 | 0.621 |
| HDL-C (mmol/l) | 1.05 ± 0.41 | 1.14 ± 0.43 | 1.01 ± 0.48 | 1.04 ± 0.45 | 0.319 |
| LDL-C (mmol/l) | 2.14 ± 0.97 | 1.97 ± 0.64 | 1.91 ± 0.95 | 1.92 ± 0.62 | 0.387 |
| TG (mmol/l) | 1.08 ± 1.18 | 0.99 ± 0.90 | 0.91 ± 1.00 | 1.16 ± 136 | 0.477 |
| CRP (mg/dl) | 2.33 ± 4.75 | 2.80 ± 3.18 | 2.78 ± 4.30 | 2.85 ± 3.71 | 0.900 |
| Ejection fraction(%) | 48.70 ± 13.61 | 46.61 ± 13.73 | 44.93 ± 14.25 | 42.29 ± 12.30 | 0.023 |
RDW Red cell distribution width, DM Diabetes mellitus, CKD Chronic kidney disease, SBP Systolic blood pressure, DBP Diastolic blood pressure, BMI Body mass index, WBC White blood cell, RDW Red cell distribution width, PDW Platelet distribution width, GFR Glomerular filtration rate, FBG Fasting blood glucose, TC Total cholesterol, TG Triglyceride, HDL-C High density lipoprotein cholesterol, LDL-C Low density lipoprotein cholesterol, CRP C-reactive protein