Table 2.
Time Trends of Laboratory Parameters and Dialysis Adequacy According to the Type of Dialyzer Membrane
| Laboratory Parameters | Membrane | Baseline |
6 Mo |
12 Mo |
18 Mo |
24 Mo |
Split-Plot ANOVA |
|---|---|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |||
| Albumin, g/dL | N | 1,098 | 944 | 835 | 772 | 710 | F(1, 3,550) = 0.57; P = 0.45 |
| MCO | 4.0 (0.3) | 4.0 (0.4) | 4.0 (0.4) | 4.0 (0.4) | 4.0 (0.4) | ||
| HF | 4.0 (0.4) | 4.0 (0.5) | 4.0 (0.4) | 4.0 (0.4) | 4.0 (0.5) | ||
| Hemoglobin, g/dL | N | 1,098 | 945 | 838 | 773 | 711 | F(1, 3,621) = 13.15; P < 0.01 |
| MCO | 11.9 (1.7) | 11.7 (1.8) | 11.9 (1.7) | 11.8 (1.6) | 11.4 (1.6) | ||
| HF | 11.6 (1.9) | 11.6 (1.9) | 11.7 (1.8) | 11.5 (1.8) | 11.2 (1.8) | ||
| Phosphorus, mg/dL | N | 1,096 | 945 | 838 | 772 | 711 | F(1, 3,599) = 0.46; P = 0.49 |
| MCO | 4.6 (1.4) | 4.6 (1.4) | 4.7 (1.4) | 4.5 (1.4) | 4.5 (1.4) | ||
| HF | 4.6 (1.5) | 4.5 (1.4) | 4.6 (1.4) | 4.5 (1.4) | 4.6 (1.4) | ||
| Potassium, mEq/L | N | 1,098 | 945 | 838 | 773 | 711 | F(1, 3,602) = 0.29; P = 0.59 |
| MCO | 5.2 (0.8) | 5.1 (0.8) | 5.1 (0.7) | 5.1 (0.7) | 5.1 (0.8) | ||
| HF | 5.2 (0.8) | 5.2 (0.7) | 5.1 (0.8) | 5.2 (0.7) | 5.1 (0.7) | ||
| Parathormone, pg/mL | N | 1,067 | 945 | 838 | 773 | 711 | F(1, 3,588) = 2.33; P = 0.13 |
| MCO | 510 (573) | 501 (563) | 471 (491) | 469 (533) | 412 (428) | ||
| HF | 578 (745) | 552 (699) | 565 (699) | 551 (717) | 513 (620) | ||
| Kt/V single pool | N | 1,096 | 945 | 837 | 773 | 710 | F(1, 3,594) = 30.46; P < 0.01 |
| MCO | 1.7 (0.4) | 1.7 (0.4) | 1.7 (0.4) | 1.7 (0.4) | 1.7 (0.4) | ||
| HF | 1.6 (0.3) | 1.6 (0.3) | 1.6 (0.3) | 1.6 (0.3) | 1.6 (0.4) |
Note: The P value corresponds to the group effect in ANOVA.
Abbreviations: ANOVA, analysis of variance; HF, high-flux; MCO, medium cutoff; SD, standard deviation.