TABLE I.
Preoperative Patient Characteristics*
| Characteristic | “SA-Expecting” Group | “No-SA-Expecting” Group | P Value† |
| Female sex (no. of patients) | 348 (57.5%) of 605 | 252 (72.6%) of 347 | 0.001 |
| Age‡ (yr) | 65.2 ± 9.2 (n = 605) | 72.7 ± 8.2 (n = 347) | <0.001 |
| Age group (no. of patients) | <0.001 | ||
| ≤60 yr | 160 (26.4%) of 605 | 25 (7.2%) of 347 | |
| 61-65 yr | 129 (21.3%) of 605 | 42 (12.1%) of 347 | |
| 66-70 yr | 147 (24.3%) of 605 | 61 (17.6%) of 347 | |
| 71-75 yr | 99 (16.4%) of 605 | 78 (22.5%) of 347 | |
| ≥76 yr | 70 (11.6%) of 605 | 141 (40.6%) of 347 | |
| BMI‡ (kg/m2) | 27.0 ± 4.3 (n = 594) | 27.2 ± 4.4 (n = 334) | 0.701 |
| Living status (no. of patients) | 0.698 | ||
| Alone or with children | 152 (25.5%) of 597 | 80 (23.3%) of 344 | |
| With partner, with or without children | 443 (74.2%) of 597 | 264 (76.7%) of 344 | |
| Other (e.g., nursing home) | 2 (0.3%) of 597 | 0 (0.0%) of 344 | |
| HOOSठ| |||
| Activities of daily living | 38.5 ± 18.8 (n = 573) | 43.3 ± 21.4# (n = 316) | 0.001 |
| Pain | 36.2 ± 17.6 (n = 585) | 41.9 ± 20.6# (n = 317) | <0.001 |
| Quality of life | 32.5 ± 10.3 (n = 596) | 35.5 ± 11.1# (n = 341) | <0.001 |
| Sport | 17.7 ± 18.2 (n = 581) | 19.3 ± 19.6 (n = 325) | 0.212 |
| Symptoms | 38.9 ± 18.0 (n = 584) | 42.2 ± 19.6# (n = 314) | 0.012 |
| SF-12 MCS‡§ | 55.3 ± 9.4 (n = 565) | 54.6 ± 9.5 (n = 310) | 0.347 |
| SF-12 PCS‡§ | 31.9 ± 9.5 (n = 565) | 32.5 ± 9.8 (n = 310) | 0.416 |
| EQ-5D‡§ | 0.59 ± 0.26 (n = 596) | 0.63 ± 0.24# (n = 332) | 0.018 |
| EQ-5D VAS‡§ | 66.4 ± 18.2 (n = 563) | 67.1 ± 18.8 (n = 315) | 0.594 |
| Comorbidities (no. of patients) | |||
| Musculoskeletal “yes” | 239 (56.4%) of 424 | 134 (60.1%) of 223 | 0.363 |
| Non-musculoskeletal “yes” | 351 (67.8%) of 518 | 211 (74.8%) of 282 | 0.037 |
*
SA = sexual activity, BMI = body mass index, HOOS = Hip disability and Osteoarthritis Outcome Score, SF-12 = Short Form-12 Survey, PCS = Physical Component Summary, MCS = Mental Component Summary, EQ-5D = EuroQoL-5 Dimensions (Dutch version), and VAS = visual analog score.
†
P values for nominal categorical variables calculated with the Pearson chi-square test; for ordinal categorical variables, with the Armitage trend test; and for continuous variables, with the independent t test.
‡
The values are given as the mean and the standard deviation.
§
All scales ranged from 0 to 100 except the EQ-5D, which ranged from 0 to 1; lower scores indicated worse outcomes.