Table 3.
Baseline characteristics by 1-year mortality status in the study population (secondary analysis)
| Variable | Subjects Alive at 1 yr (n=106) | Subjects Dead at 1 yr (n=52) | P Valuea |
|---|---|---|---|
| Age, yr | 69.5±12.7 | 70.3±13.1 | 0.70 |
| Women | 51 (48.1) | 30 (57.7) | 0.26 |
| White race | 73 (68.9) | 33 (63.5) | 0.50 |
| Comorbidities | |||
| Diabetes mellitus | 31 (29.3) | 12 (23.1) | 0.41 |
| Coronary artery disease | 13 (12.3) | 7 (13.5) | 0.83 |
| Congestive heart failure | 20 (18.9) | 13 (25.0) | 0.37 |
| Vascular access: catheter | 58 (56.9) | 35 (71.4) | 0.08 |
| Body mass index (kg/m2) | 26.5±7.2 | 27.7±7.0 | 0.29 |
| Systolic BP (mmHg) | 147.8±22.5 | 138.9±26.6 | 0.03 |
| Diastolic BP (mmHg) | 73.7±11.6 | 69.4±14.4 | 0.04 |
| Urea reduction ratio | 68.3±10.6 | 68.7±7.8 | 0.85 |
| Laboratory data | |||
| Hemoglobin (g/dl) | 10.5 (9.7–11.3) | 10.5 (9.6–11.2) | 0.44 |
| Albumin (g/dl) | 3.5 (3.3–3.9) | 3.4 (3.2–3.7) | 0.05 |
| Ferritin (ng/ml) | 183 (100–324) | 181 (79–402) | 0.76 |
| Transferrin saturation (%) | 19 (15–25) | 17 (13–24) | 0.22 |
| Phosphorus (mg/dl) | 4.6 (3.8–5.7) | 4.2 (3.2–5.1) | 0.03 |
| Parathyroid hormone (pg/ml) | 221 (115–318) | 230 (117–473) | 0.18 |
| IL-6 (pg/ml) | 11.9 (6.0–31.0) | 24.8 (12.0–46.5) | 0.01 |
| Myeloperoxidase (ng/ml) | 35.4 (19.6–69.6) | 40.4 (20.4–63.8) | 0.60 |
Categorical data are n (%). Continuous measures are mean ± SD. Laboratory values are median (quartile 1 to quartile 3). Values reflect baseline measurements taken during the first 90 days of initiating dialysis.
a
P values represent alive versus dead chi-squared, Wilcoxon rank sum, or t tests as appropriate.