Table 4. Univariable logistic regression analysis for the discrimination between the lowest and middle tertiles vs. the highest tertile of maximum walking speed.
| Variable | Units of Increase | Lowest and Middle tertiles vs.Highest tertile | ||
|---|---|---|---|---|
| OR | (95% CI) | P value | ||
| Age (years) | 10 years | 1.51 | (0.97–2.36) | 0.07 |
| Height (cm) | 1 cm | 0.98 | (0.93–1.02) | 0.31 |
| BMI (kg / m2) | 1 kg / m2 | 1.01 | (0.91–1.12) | 0.87 |
| HD duration (years) | 1 year | 1.00 | (0.96–1.05) | 0.89 |
| Hemoglobin (g / dL) | 0.1 g / dL | 0.93 | (0.85–1.02) | 0.12 |
| Serum albumin (g / dL) | 0.1 g / dL | 0.39 | (0.10–1.59) | 0.19 |
| Diabetes mellitus (presence) | 1 presence | 2.33 | (1.05–5.21) | 0.04 |
| Peripheral arterial disease (presence) | 1 presence | 2.25 | (1.01–5.04) | 0.04 |
| Cardiac disease (presence) | 1 presence | 2.12 | (0.98–4.57) | 0.06 |
| Cerebrovascular disease (presence) | 1 presence | 3.51 | (1.12–10.97) | 0.03 |
| Peripheral neuropathy (presence) | 1 presence | 3.44 | (1.30–9.14) | 0.01 |
| Orthopedic abnormality (presence) | 1 presence | 0.94 | (0.43–2.04) | 0.87 |
| Joint disease (presence) | 1 presence | 1.01 | (0.47–2.16) | 0.99 |
| History of fracture (presence) | 1 presence | 2.71 | (0.86–8.60) | 0.09 |
| Others (presence) | 1 presence | 0.81 | (0.36–1.84) | 0.61 |
| The number of comorbidities | 1 | 4.00 | (1.65–9.72) | <0.01 |
| Leg strength (%BW) | 10%BW | 0.54 | (0.38–0.76) | <0.001 |
| Lower extremity flexibility (degrees) | 1 degree | 0.99 | (0.98–1.00) | 0.06 |
| Standing balance (seconds) | 10 seconds | 0.77 | (0.66–0.90) | <0.01 |
OR: odds ratio, CI: confidence interval, BMI: body mass index, HD: hemodialysis, BW: body weight.