Table 2.
Univariate and multiple regression with backward elimination results
| Full Model | Final Model | |||||
|---|---|---|---|---|---|---|
| Adjusted R2: 0.59, P < .001 | Adjusted R2: 0.62, P < .001 | |||||
| Univariate squared correlations | P value | Semipartial squared correlations | P value | Semipartial squared correlations | P value | |
| Demographic and Anthropometric | ||||||
| Age | 0.03 | .18 | … | … | … | … |
| Sex | 0.02 | .31 | … | … | … | … |
| BMI | 0.00 | .86 | … | … | … | … |
| Race | 0.01 | .94 | … | … | … | … |
| VA/non-VA | 0.00 | .91 | … | … | … | … |
| Lower Limb Amputation Characteristics | ||||||
| Time since LLA | 0.01 | .39 | … | … | … | … |
| Presence of wound | 0.02 | .34 | … | … | … | … |
| Chakrabarty score | 0.07 | .04 | 0.07 | .003 | … | … |
| Level of LLA | 0.01 | .56 | … | … | … | … |
| Comorbidities and Health Behaviors | ||||||
| FCI score | 0.02 | .26 | … | … | … | … |
| DM | 0.01 | .53 | … | … | … | … |
| PAD | 0.04 | .16 | … | … | … | … |
| DM and PAD | 0.01 | .51 | … | … | … | … |
| Depression | 0.01 | .61 | … | … | … | … |
| DDD | 0.00 | .91 | … | … | … | … |
| Cardiovascular Disease | 0.10 | .02 | 0.08 | .001 | 0.10 | < .001 |
| Pulmonary Disease | 0.06 | .07 | 0.07 | .004 | … | … |
| Arthritis | 0.00 | .77 | … | … | … | … |
| Anxiety | 0.00 | .72 | … | … | … | … |
| MMSE score | 0.05 | .09 | 0.02 | .11 | … | … |
| GDS score | 0.04 | .12 | … | … | … | … |
| Prior smoking history | 0.02 | .31 | … | … | … | … |
| Pre-LLA walk time | 0.14 | .005 | 0.06 | .005 | 0.11 | < .001 |
| Physical Function | ||||||
| TUG | 0.27 | < .001 | 0.18 | <.001 | … | |
| 2MWT | 0.45 | < .001 | 0.09 | .001 | 0.32 | < .001 |
| 5MWT | 0.43 | < .001 | 0.03 | .05 | … | … |
| Use of assistive device | 0.48 | < .001 | 0.05 | .009 | 0.11 | < .001 |
| Pain with gait | 0.01 | .50 | … | … | … | … |
| PEQ-MS | 0.12 | .009 | 0.00 | .82 | … | … |
BMI = body mass index; LLA = lower limb amputation; FCI = Functional Comorbidity Index; DM = diabetes mellitus; PAD = peripheral artery disease; DDD = degenerative disk disease; MMSE = Mini-Mental State Exam; GDS = Geriatric Depression Scale; TUG = Timed Up-and-Go; 2MWT = 2-Minute Walk Test; 5MWT = 5-Meter Walk Test; PEQ-MS = Prosthesis Evaluation Questionnaire – Mobility Subscale.