Table 2.

Logistic regression adjusting for confounding variables when comparing vancomycin-only versus cefazolin-only prophylaxis on risk for PJI

Variables	Odds ratio	95% CI	p value
Age	0.975	0.951–0.999	0.048
BMI	1.060	1.026–1.095	0.001
Charlson score	1.180	1.008–1.380	0.040
Sex	1.174	0.765–1.804	0.463
Joint	0.768	0.501–1.180	0.228
Vancomycin versus cefazolin	1.587	1.004–2.508	0.048

PJI = periprosthetic joint infection; CI = confidence interval; BMI = body mass index.