Table 2.
Baseline Characteristics for the AE Cohort and All FORCE Patients
| AE Cohort | All Other FORCE Cohorts | P value | |||
|---|---|---|---|---|---|
| N | % or SD | N | % or SD | ||
| Female (%) | 255.00 | 59.16 | 5324.00 | 58.62 | 0.823 |
| Age (mean ± SD) | 64.03 | 9.81 | 65.47 | 10.13 | 0.004 |
| Education | 0.210 | ||||
| High school or less (%) | 104.00 | 26.13 | 2553.00 | 30.28 | |
| More than high school (%) | 284.00 | 71.36 | 5675.00 | 67.32 | |
| Other (%) | 10.00 | 2.51 | 202.00 | 2.40 | |
| Comorbidity Index | 0.318 | ||||
| Zero (%) | 229.00 | 56.27 | 4557.00 | 53.71 | |
| One (%) | 81.00 | 19.90 | 1791.00 | 21.11 | |
| Two–five (%) | 52.00 | 12.78 | 966.00 | 11.39 | |
| Six or more (%) | 45.00 | 11.06 | 1170.00 | 13.79 | |
| FOR HIP | |||||
| Operative joint* | |||||
| Pain score (mean ± SD) | 42.83 | 21.01 | 48.15 | 19.81 | 0.001 |
| Stiffness score (mean ± SD) | 34.54 | 22.37 | 37.87 | 21.62 | 0.061 |
| Function score (mean ± SD) | 38.96 | 20.02 | 44.83 | 19.31 | 0.000 |
| Baseline SF-36** | |||||
| MCS (mean ± SD) | 49.68 | 12.99 | 50.06 | 12.61 | 0.694 |
| PCS (mean ± SD) | 29.84 | 9.49 | 31.71 | 8.77 | 0.006 |
| FOR KNEE | |||||
| Operative joint* | |||||
| Pain score (mean ± SD) | 53.15 | 18.28 | 51.21 | 18.96 | 0.139 |
| Stiffness score (mean ± SD) | 41.35 | 19.80 | 43.04 | 22.13 | 0.277 |
| Function score (mean ± SD) | 54.24 | 17.43 | 51.63 | 18.52 | 0.042 |
| Baseline SF-36** | |||||
| MCS (mean ± SD) | 52.50 | 10.96 | 51.22 | 12.37 | 0.120 |
| PCS (mean ± SD) | 33.60 | 8.12 | 32.53 | 8.35 | 0.056 |
Notes:
*
Estimated operative joint scores using the HOOS for hips and KOOS for knees; lower scores represent more pain or stiffness, and poorer function.
**
Lower MCS and PCS scores represent poorer health.