Table 4 Characteristics for hip arthroplasty patients
|  | Hips (n = 527) |
|---|---|
Age in years, median (IQR) | 73 (66–81) |
Gender, n (%) | Â |
 Male | 194 (37) |
 Female | 333 (63) |
Weight in kg, median (IQR) | 83.0 (70.6–97.2) |
BMI in kg/m2, median (IQR) | 30 (26.2–34.9) |
Type of surgery, n (%) | Â |
 Primary | 519 (98.5) |
 Revision | 8 (1.5) |
Operative side, n (%) | Â |
 Left | 219 (42) |
 Right | 308 (58) |
Pre-operative opiate use, n (%) | Â |
 Yes | 187 (35) |
 No | 340 (65) |