Table 5.
Multivariable analysis of post-operative (12 months) changes in WOMAC domains
| WOMAC * | ||||||
|---|---|---|---|---|---|---|
| |
Pain |
Function |
Stiffness |
|||
|
Variables |
Diff† (95%CI) |
P-value |
Diff (95%CI) |
P-value |
Diff (95%CI) |
P-value |
|
Gender (Male vs Female) |
0.02 (-0.84, 0.88) |
0.2 |
1.30 (-1.68, 4.28) |
0`.4 |
-0.15 (-0.52, 0.23) |
0.4 |
|
Age (< 65 vs ≥65) |
-0.48 (-1.28, 0.31) |
0.9 |
-2.47 (-5.23, 0.28) |
0.07 |
-0.18 (-0.53, 0.17) |
0.3 |
|
BMI <30 vs ≥30 |
-0.15 (-0.85, 0.54) |
0.6 |
-0.97 (-3.41, 1.46) |
0.4 |
-0.06 (-0.37, 0.24) |
0.4 |
|
Education (Low§ vs High) |
-0.72 (-1.69, 0.44) |
0.06 |
-3.08 (-6.76, 0.59) |
0.09 |
-0.16 (-0.70, 0.28) |
0.8 |
|
Social Support (Yes vs No) |
-0.86 (-1.82, 0.09) |
0.07 |
-2.24 (-5.55, 1.06) |
0.1 |
-0.17 (-0.59, 0.25) |
0.4 |
|
Residence (Rural vs Urban/semi) |
-0.52 (-1.10, 0.42) |
0.05 |
-2.25 (-4.87, 0.38) |
0.09 |
-0.15 (-0.59, 0.22) |
0.06 |
| Pre-intervention Pain |
0.10 (2.29, 0.02) |
0.02 |
- |
- |
- |
- |
| Pre-intervention Function |
- |
- |
0.17 (0.06, 0.28) |
0.002 |
- |
- |
| Pre-intervention Stiffness | - | - | - | - | 0.07 (-0.02, 0.17) | 0.1 |
*WOMAC scores: pain 0–20, function 0–68, stiffness 0–8; higher scores indicate greater difficulty.
† Estimated differences between categories after adjustment by all other variables.
§ Elementary or less; - Not applicable.