Table 2. Association of the 6MWT with renal failure adjusted for demographic and anthropometric variables (ANOVA, general linear model).
| Parameter | Unadjusted analysis | Adjusted analysis* | ||||
|---|---|---|---|---|---|---|
| B | p | B (SE) | 95% C.I. for B | Partial Eta2 | p | |
| Age (years) | -4.2 | <0.001 | -2.1 (0.3) | -2.8 to -1.4 | 0.15 | <0.001 |
| Sex (female) | -14.9 | 0.33 | 14.2 (41) | -66.6 to 95 | 0.001 | 0.73 |
| Body height (cm) | 4.7 | <0.001 | 3.3 (0.8) | 1.8 to 4.9 | 0.08 | <0.001 |
| Spontaneous gait speed (m/s) | 216.8 | <0.001 | 92 (22.6) | 47.7 to 136.5 | 0.07 | <0.001 |
| Lean tissue mass (kg) | 5 | <0.001 | 0.4 (0.9) | -1.3 to 2 | 0.001 | 0.68 |
| Fat tissue mass (kg) | -4.3 | <0.001 | -3.2 (0.5) | -4.2 to -2.2 | 0.16 | <0.001 |
| Davies comorbidity grade 0 vs.2 | 169.3 | <0.001 | 15.7 (39.8) | -62.8 to 94.1 | 0.001 | 0.69 |
| Davies comorbidity grade 1 vs.2 | 69.9 | 0.13 | 11.6 (30.7) | -48.9 to 72.1 | 0.001 | 0.71 |
| Renal failure | -117.3 | <0.001 | -101.5 (26) | -152.9 to -50.1 | 0.07 | <0.001 |
N = 230 (140 control subjects and 90 dialysis patients)
* model R2 = 0.7, adjusted R2 = 0.68, intercept = 98.5 m. Significant negative coefficients B denote that physical performance worsens with increasing age, fat tissue mass and the presence of renal failure; significant positive coefficients B denote that physical performance improves with increasing height and spontaneous gait speed.