Table 2.
Patients characteristics and preoperative PROs of included and excluded THA procedures
| Patients characteristics and preoperative PROs | Included THA procedures n = 552 |
Excluded THA procedures n = 70 |
p value |
|---|---|---|---|
| ASA classification (II; n (%)) | 284 (51%) | 28 (40%) | 0.071 |
| Age on date of surgery (years; median (IQR)) | 66 (60–71) | 65 (55–74) | 0.805 |
| BMI (kg/m2; median (IQR)) | 26.00 (23.90–28.41) | 26.29 (24.48–28.13) | 0.389 |
| Gender (male; n (%)) | 209 (38%) | 31 (44%) | 0.298 |
| Diagnosis (osteoarthritis; n (%)) | 486 (88%) | 60 (86%) | 0.575 |
| Charnley score (n (%)) | 0.064 | ||
| A—one hip joint affected | 135 (24%) | 15 (21%) | |
| B1—both hip joints affected | 245 (44%) | 23 (33%) | |
| B2—contralateral hip joint with a total hip prosthesis | 110 (20%) | 17 (24%) | |
| C—multiple joints affected | 62 (11%) | 15 (21%) | |
| Comorbidity (yes, n (%)) | 178 (32%) | 23 (33%) | 0.918 |
| Anxiety (yes, n (%)) | 123 (22%) | 20 (29%) | 0.188 |
| Preoperative NRS pain at rest (median (IQR)) | 6 (4–7) | 5 (4–7) | 0.543 |
| Preoperative NRS pain during activity (median (IQR)) | 8 (7–9) | 8 (7–9) | 0.363 |
| Preoperative EQ-5D descriptive system (median (IQR)) | 0.693 (0.310–0.775) | 0.693 (0.335–0.775) | 0.625 |
| Preoperative EQ VAS (median (IQR)) | 80 (60–87) | 77 (66–85) | 0.960 |
| Preoperative HOOS-PS (median (IQR)) | 46.1 (37.7–55.9) | 50.8 (41.7–55.9) | 0.341 |
| Preoperative OHS (median (IQR)) | 24 (18–29) | 24 (17–29) | 0.454 |
| Complication (yes, n (%)) | 33 (6%) | 8 (11%) | 0.118 |
ASA American Society of Anaesthesiologists, BMI body mass index, EQ-5D descriptive system EuroQol 5 dimensions descriptive system, EQ VAS EuroQol Visual Analogical Scale, HOOS-PS Hip disability and Osteoarthritis Outcome Score-Physical function Short-form, NRS numeric rating scale, OHS Oxford Hip Score, PROs patient-reported outcomes, THA total hip arthroplasty