Table 1.
Baseline characteristics according to anemia prevalence
| Baseline Characteristics, Total N=3869 | Prevalent Anemia, N=1872 | No Prevalent Anemia, N=1997 | P Value |
|---|---|---|---|
| Age, yr | 58±11 | 57±11 | <0.001 |
| Sex, n (%) | 875 (47) | 861 (43) | 0.02 |
| Black, n (%) | 929 (50) | 689 (35) | <0.001 |
| Hispanic, n (%) | 317 (17) | 178 (9) | <0.001 |
| Current smoking, n (%) | 227 (12) | 280 (14) | 0.08 |
| BMI, kg/m2 | 32±8 | 32±7 | 0.003 |
| Systolic BP, mm Hg | 133±23 | 125±21 | <0.001 |
| Diabetes mellitus, n (%) | 1206 (64) | 668 (33) | <0.001 |
| Any CVD, n (%) | 722 (39) | 571 (29) | <0.001 |
| C-reactive protein, mg/L | 2.7 (1.0–7.4) | 2.4 (1.1–5.7) | 0.01 |
| UACR | 118 (16–827) | 27 (6–241) | <0.001 |
| eGFR, ml/min per 1.73 m2 | 39±13 | 49±15 | <0.001 |
| Serum calcium, mg/dl | 9.1±0.5 | 9.3±0.5 | <0.001 |
| Serum phosphate, mg/dl | 3.9±0.7 | 3.6±0.6 | <0.001 |
| PTH, pg/ml | 66 (40–114) | 46 (32–72) | <0.001 |
| Hemoglobin, g/dl | 11.2±1.1 | 13.9±1.2 | <0.001 |
| FGF23, RU/ml | 179 (118–298) | 119 (83–187) | <0.001 |
Results are reported as means±SD, proportions, or medians (interquartile ranges). N, number; BMI, body mass index; CVD, cardiovascular disease; UACR, urinary albumin-to-creatinine ratio; PTH, parathyroid hormone; FGF23, fibroblast growth factor 23.