Table 3. Multivariate logistic regression analysis.

Individual variable	p	Odds ratio	5% confidence lower	95% confidence upper
Constant	<0.001	0.00202	0.000389	0.0105
Age (<55 years)	0.997	3.44E-07	0	(+inf)
Age (>75 years)	0.004	8.464	2.016	35.54
Gender Male	0.005	7.906	1.879	33.26
Body mass index (>40 kg/kg/m2)	0.998	2.07E-07	0	(+inf)
Posttraumatic osteoarthritis	0.996	1.01E-07	0	(+inf)
Rheumatoid arthritis	0.243	3.72	0.41	33.724
Diabetes mellitus	0.547	0.521	0.0623	4.357
Tranexamic acid	0.043	0.109	0.0128	0.929
Use of tranexamic acid has been shown as a protective factor. Being aged over 75 years at time of primary surgery and male gender were predictors of revision for acute and delayed periprosthetic joint infection.