Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
General preoperative characteristics of the patients
| Characteristics | Number of cases | Number of controls | P value |
|---|---|---|---|
| Female (%) | 1393 (81.45) | 252 (80.25) | 0.50 |
| Mean age (SD) | 64.99 (11.49) | 66.37 (8.90) | 0.18 |
| Mean length of hospital stay (SD) | 3.13 (4.07) | 3.76 (4.91) | 0.68 |
| Mean operation time (SD) | 60.30 (44.19) | 62.23 (39.51) | 0.12 |
| Superficial incisional infection (%) | 32 (1.87) | 36 (11.46) | 0.00 |
| Deep joint infection (%) | 7 (0.41) | 6 (1.91) | 0.00 |
