Table 3.
Patient-reported outcome scores over time for total hip arthroplasty.
| Outcome measure/time interval | Mean | 95% Confidence interval | P value |
|---|---|---|---|
| WOMAC | |||
| Baseline | 62.9 | 61.0-64.8 | |
| 6 mo | 16.5 | 14.4-18.6 | <.001 |
| 12 mo | 13.3 | 11.0-15.7 | .017 |
| 24 mo | 12.8 | 9.5-16.2 | .788 |
| SF-12 PCS | |||
| Baseline | 26.4 | 25.4-27.3 | |
| 6 mo | 43.5 | 42.4-44.6 | <.001 |
| 12 mo | 45.4 | 44.1-46.6 | .011 |
| 24 mo | 46.9 | 45.1-48.6 | .130 |
| SF-12 MCS | |||
| Baseline | 52.7 | 51.6-53.9 | |
| 6 mo | 55.9 | 54.7-57.2 | <.001 |
| 12 mo | 55.5 | 54.1-56.9 | .578 |
| 24 mo | 53.8 | 51.9-55.8 | .122 |
| UCLA | |||
| Baseline | 3.7 | 3.5-3.8 | |
| 6 mo | 5.4 | 5.2-5.6 | <.001 |
| 12 mo | 5.5 | 5.3-5.7 | .376 |
| 24 mo | 5.7 | 5.4-6.0 | .373 |
| OHS | |||
| Baseline | 43.5 | 42.7-44.4 | |
| 6 mo | 20.8 | 19.9-21.7 | <.001 |
| 12 mo | 18.9 | 17.8-19.9 | .001 |
| 24 mo | 18.2 | 16.7-19.7 | .419 |
P values represent the statistical comparison of the indicated time interval compared to the previous time interval. Lower WOMAC and OHS scores indicate better health.