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 |