Table 2.
Comparison of mean WOMAC score in Three Groups.
| WOMAC | Groups |
P-value | |||||
|---|---|---|---|---|---|---|---|
| Simultaneous |
Same Hospitalization |
Different Hospitalization |
|||||
| Mean | SD | Mean | SD | Mean | SD | ||
| Before surgery | 57.66 | 3.68 | 58.18 | 4.54 | 59.63 | 8.66 | 0.339 |
| 1 month after surgery | 80.79 | 2.77 | 82.29 | 3.56 | 79.87 | 1.89 | 0.001 |
| 3 months after surgery | 88.55 | 2.47 | 89.08 | 3.12 | 88.74 | 2.92 | 0.900 |
| 2 years after surgery | 93.42 | 1.80 | 92.76 | 1.99 | 93.34 | 1.65 | 0.231 |
| Diff (before to 1 month) | 23.13 | 4.89 | 24.11 | 5.76 | 20.24 | 7.84 | 0.023 |
| Diff (before to 3 months) | 30.89 | 4.21 | 30.89 | 6.27 | 29.11 | 9.15 | 0.508 |
| Diff (before to 2 years) | 35.76 | 4.11 | 34.58 | 4.84 | 33.71 | 8.48 | 0.343 |
| P | 0.001 | 0.001 | 0.001 | ||||
| P (type of surgery) | 0.768 | ||||||
| P (time and surgical technique) | 0.054 | ||||||
Note. WOMAC: Western Ontario and McMaster Universities Arthritis Index; SD: Standard deviation.