Table 2.

Influence of patient characteristics and region on Periprosthetic Joint Infection (PJI) rate

Variable	Odds Ratio [95% CI]
Age > =70 years	0.75 [0.63-0.89]
Sex (Males versus Females)	1.38 [1.17–1.63]
Comorbidities
Cardiac arrhythmias (yes/no)	1.32 [0.99–1.74]
Congestive heart failure (yes/no)	1.58 [0.98–2.53]
Rheumatoid arthritis, collagen or vascular disease (yes/no)	1.96 [1.39–2.75]
Diabetes uncomplicated (yes/no)	1.28 [1.00–1.64]
Coagulopathy (yes/no)	2.28 [1.29–4.03]
Fluid and electrolyte disorders (yes/no)	1.63 [1.15–2.30]
Depression (yes/no)	2.04 [1.46–2.86]
Joint (knee versus hip)	1.52 [1.28–1.79]
Region
Australia versus US	1.40 [1.03–1.91]
Europe versus US	1.24 [1.01–1.52]

Significant differences are indicated in bold; Model fit: C statistic = 0,61 Nagelkerke R ² = 0,018