Table 3.
Unadjusted relationship between Length of Stay (LOS) in days & all potential predictors
| Continuous Variable | N | LOS | r | p-value | ||
|---|---|---|---|---|---|---|
| Mean | SD | |||||
| Age | 275 | 30 | 16.4 | .189 | .002 | |
| Adm. Hemoglobin (g/l) | 267 | 30 | 16.2 | .108 | .079 | |
| Days after THR on admission | 275 | 30 | 16.4 | .149 | .013 | |
| Motor FIM on admission | 261 | 30 | 16.7 | -.440 | <.001 | |
| Dichotomized Variables | ||||||
| Female sex | No | 105 | 26 | 16.0 | .001 | |
| Yes | 170 | 32 | 16.1 | |||
| Had support | No | 95 | 33 | 18.0 | .005 | |
| Yes | 176 | 27 | 15.4 | |||
| Environmental Barriers | No | 128 | 31 | 16.8 | .142 | |
| Yes | 139 | 28 | 16.2 | |||
| Language Barrier | No | 246 | 30 | 16.7 | .844 | |
| Yes | 28 | 29 | 13.9 | |||
| Redo revision (≥2) | No | 155 | 27 | 13.9 | <.001 | |
| Yes | 120 | 34 | 18.3 | |||
| Had 2 or more prior L/Es surgeries | No | 169 | 28 | 15.3 | .026 | |
| Yes | 105 | 32 | 17.7 | |||
| Had complication(s) | No | 150 | 27 | 15.0 | .011 | |
| Yes | 119 | 32 | 17.7 | |||
| N | LOS | p-value* | ||||
| Median | IQR | |||||
| Had 2 or more comorbid conditions | No | 105 | 23 | 17.5 | .004 | |
| Yes | 164 | 30 | 24.0 | |||
| Revised component | ||||||
| Acetabular only | No | 161 | 29 | 22.0 | .001 | |
| Yes | 77 | 21 | 15.5 | |||
| Femoral only | No | 178 | 26 | 19.0 | .026 | |
| Yes | 60 | 33 | 24.8 | |||
| Acetabular & Femoral | No | 137 | 23 | 20.5 | .186 | |
| Yes | 101 | 29 | 19.0 | |||
| P/WBAT on admission | No | 189 | 30 | 24.0 | <.001 | |
| Yes | 85 | 21 | 15.5 | |||
*Significance of Non-parametric test
r, Pearson correlation; Adm., admission; THR, total Hip replacement; FIM, Functional Independence Measures; L/Es, lower extremities; P/WBAT; partial or weight bearing as tolerated