Table 1.
Baseline characteristics of 173 hemodialysis patients
| Characteristics | All | Se < 10.5 μg/dl (n = 86) | Se ≥ 10.5 μg/dl (n = 87) | P value |
|---|---|---|---|---|
| Age | 67.0 (12.7) | 67.2 (12.9) | 66.8 (12.5) | 0.82 |
| Male | 134 (77%) | 70 (81%) | 64 (74%) | 0.22 |
| Body mass index, kg/m2 | 23.0 (3.9) | 22.8 (3.9) | 23.1 (3.9) | 0.73 |
| Time on dialysis, mo | 49 (22–97) | 49 (22–92) | 55 (21–102) | 0.90 |
| HDF | 127 (73%) | 62 (72%) | 65 (75%) | 0.70 |
| Dialysis dose (spKt/V) | 1.43 (0.24) | 1.42 (0.26) | 1.44 (0.23) | 0.56 |
| Not receiving ESA | 28 (16%) | 10 (12%) | 18 (21%) | 0.10 |
| Selenium, μg/dl | 10.8 (2.9) | 8.7 (1.3) | 12.8 (0.2) | <0.001 |
| Hb, g/dl | 11.1 (1.1) | 11.2 (1.1) | 11.1 (1.0) | 0.58 |
| TSAT, % | 23.7 (15.7–32.5) | 23.7 (15.4–32.6) | 23.9 (17.3–32.4) | 0.84 |
| Ferritin, ng/ml | 70 (25–127) | 68 (25–121) | 75 (24–139) | 0.82 |
| Intravenous iron therapy | 20 (12%) | 11 (13%) | 9 (10%) | 0.62 |
Hb, hemoglobin; HDF, hemodiafiltration; IQR, interquartile range; spKt/V, single-pool Kt/V; Se, selenium; TSAT, transferrin saturation.
Full list of baseline characteristics is available in Supplementary Table S1. Data are n (%), mean (SD), or median (IQR).