Table 1.
Demographics, dialysis treatment, and biochemical variables
| Variable | |
|---|---|
| Age (yr) (median, minimum − maximum) | 75 (30–87) |
| Sex (man/woman) [n (%)] | 40/35 (54/46) |
| Vintage (mo) | 20 (9–31.5) |
| Qb,effective (ml/min) | 304.0 (40.1) |
| Qd (ml/min) | 505.6 (22.7) |
| Unipuncture/bipuncture [n (%)] | 8/67 (11–89) |
| Residual renal function (yes versus no) (%) | 39/36 (52/48) |
| Urea (mg/dl) | 119.3 (26.9) |
| Creatinine (mg/dl) | 6.9 (2.1) |
| Albumin (mg/L) | 39.5 (3.5) |
| Total p-cresyl sulfate (μM) | 183.6 (114.4–305.3) |
| Free p-cresyl sulfate (μM) | 10.3 (5.6–19.9) |
| Free fraction p-cresyl sulfate | 0.054 (0.042–0.070) |
| Total indoxyl sulfate (μM) | 104.7 (67.2–134.6) |
| Free indoxyl sulfate (μM) | 9.1 (5.4–12.5) |
| Free fraction indoxyl sulfate | 0.081 (0.068–0.106) |
Data are expressed as mean (SD) or median (25–75 percentile) as appropriate. To convert creatinine in mg/dl to μM, multiply with 88.4.
Qb,effective, effective blood flow; Qd, dialysate flow.