Table 3.
Cystoscopy Performed in the 2 Study Populations Divided by Joint Age Less Than and Greater Than 1 Year in the Observation Period of 2 Years
| Joint Age <1 Year | Cases (n = 151) | Controls (n = 75) | OR (95% CI)a | P Value | Overall P Value |
|---|---|---|---|---|---|
| Cystoscopy | |||||
| Yes, with prophylaxis | 0 (0) | 0 (0) | — | ||
| Yes, no prophylaxis | 5 (3.3) | 1 (1.3) | 6.7 (0.5–94.1) | .16 | |
| No | 146 (96.7) | 74 (98.7) | 1.0 (Reference) | ||
| Joint Age >1 Year | Cases (n = 188) | Controls (n = 264) | OR (95% CI)a | P Value | Overall P Value |
| Cystoscopy | |||||
| Yes, with prophylaxis | 3 (1.6) | 2 (0.8) | 1.1 (0.1–12.4) | .95 | |
| Yes, no prophylaxis | 12 (6.4) | 10 (3.8) | 2.2 (0.8–5.6) | .11 | |
| No | 173 (92.0) | 252 (95.4) | 1.0 (Reference) | .28 | |
Abbreviations: CI, confidence interval; OR, odds ratio.
a The model includes the covariates of sex, joint age, dental propensity score, body mass index >140, procedure time >14 hours, immunocompromised host, American Society of Anesthesiologists score, wound healing complications, prior arthroplasty or surgery on the index joint, use of antibiotic surgical prophylaxis, postoperative urinary tract infection, and distant organ infection, with or without antibiotic prophylaxis as indicated.