TABLE III.
Variables Predicting Return to Daily Activities, Work, and Sports*
| Activity | No.† | R2 | Predictive Variables | OR (95% CI) | P Value |
|---|---|---|---|---|---|
| Daily activities | |||||
| Sleeping | |||||
| Supine | 243 | 0.127 | NRS pain during activity | 1.554 (1.022-2.362) | 0.039 |
| Prone | 115 | 0.200 | Alcohol use | 3.467 (1.002-11.995) | 0.050 |
| Operative duration | 1.057 (1.000-1.117) | 0.048 | |||
| Fixation technique | 0.237 (0.077-0.731) | 0.012 | |||
| Operative side | 289 | 0.023 | — | — | — |
| Nonoperative side | 301 | <0.001 | — | — | — |
| Night rest | 314 | 0.123 | Sex | 0.384 (0.188-0.786) | 0.009 |
| BMI | 0.896 (0.816-0.985) | 0.022 | |||
| Operative duration | 0.965 (0.938-0.992) | 0.011 | |||
| Fixation technique | 1.919 (1.002-3.676) | 0.049 | |||
| HOOS-PS | 1.033 (1.008-1.058) | 0.010 | |||
| OHS | 1.071 (1.016-1.129) | 0.011 | |||
| Walking without aid | 456 | 0.126 | Sex | 0.345 (0.140-0.848) | 0.020 |
| BMI | 0.815 (0.722-0.919) | 0.001 | |||
| Operative duration | 0.969 (0.947-0.992) | 0.009 | |||
| Stair walking | 455 | 0.225 | Sex | 0.186 (0.072-0.481) | 0.001 |
| BMI | 0.783 (0.696-0.880) | 0.001 | |||
| Smoking status | 0.336 (0.132-0.857) | 0.022 | |||
| Operative duration | 0.962 (0.940-0.985) | 0.001 | |||
| Grocery shopping | 456 | 0.273 | Age | 0.911 (0.844-0.984) | 0.018 |
| BMI | 0.795 (0.680-0.931) | 0.004 | |||
| Operative duration | 0.955 (0.928-0.983) | 0.002 | |||
| NRS pain during activity | 1.390 (1.063-1.817) | 0.016 | |||
| EQ-5D index | 16.656 (1.619-171.359) | 0.018 | |||
| Putting shoes/socks on | 456 | 0.097 | Age | 0.961 (0.930-0.994) | 0.020 |
| BMI | 0.896 (0.831-0.967) | 0.004 | |||
| HOOS-PS | 1.022 (1.002-1.041) | 0.027 | |||
| EQ-5D index | 3.939 (1.140-13.615) | 0.030 | |||
| Driving a car | 422 | 0.139 | Sex | 0.198 (0.053-0.738) | 0.016 |
| BMI | 0.838 (0.719-0.978) | 0.025 | |||
| OHS | 1.102 (1.008-1.204) | 0.032 | |||
| Outdoor cycling | 416 | 0.154 | Age | 0.950 (0.916-0.986) | 0.007 |
| Sex | 0.379 (0.212-0.676) | 0.001 | |||
| BMI | 0.858 (0.793-0.929) | 0.001 | |||
| OHS | 1.070 (1.023-1.118) | 0.003 | |||
| Work | |||||
| Low-impact work | 180 | 0.096 | BMI | 0.786 (0.651-0.950) | 0.013 |
| Medium-impact work | 112 | 0.202 | BMI | 0.877 (0.770-1.000) | 0.050 |
| Alcohol use | 2.675 (0.998-7.168) | 0.050 | |||
| HOOS-PS | 1.036 (1.001-1.072) | 0.044 | |||
| OHS | 1.090 (1.015-1.171) | 0.018 | |||
| Sports | |||||
| Low-impact sports | 231 | 0.057 | Smoking status | 0.345 (0.128-0.932) | 0.036 |
| Medium-impact sports | 108 | 0.206 | Alcohol use | 5.713 (1.140-28.638) | 0.034 |
| HOOS-PS | 1.068 (1.016-1.123) | 0.010 | |||
| OHS | 1.105 (1.009-1.210) | 0.031 | |||
| Swimming | 95 | 0.053 | — | — | — |
*
OR = odds ratio, CI = confidence interval.
†
Values represent the number of patients who returned to the activity and who had complete data available for patient characteristics, surgery characteristics, and preoperative PRO measures, which were utilized to create the model.