Table 4.

Univariate and Multivariable-adjusted 90-day event rates in Olmsted County residents after Total Hip Arthroplasty

	90-day Cardiac Events Odds Ratio (95% confidence intervals)				90-day Thromboembolic Events (THE) Odds Ratio (95% confidence intervals)
	No history of heart disease		History of heart disease		No history of Thromboembolism		History of Thromboembolism
	Univariate	Multivariablea	Univariate	Multivariablea	Univariate	Multivariablea	Univariate	Multivariablea
Age >65 (Ref: ≤65 years)	5.5 (1.2, 25.2) p=0.03		2.3 (0.98, 5.3) p=0.055		1.6 (0.8, 3.3) p=0.21		0.6 (0.2, 2.1) p=0.41
Male gender (Ref: female)	0.6 (0.2, 2.1) p=0.45		0.5 (0.3, 0.8) p=0.01	0.5 (0.3, 0.9) p=0.02	0.5 (0.3, 1.1) p=0.09		1.2 (0.3, 4.0) p=0.81
ASA Class 3–4 (Ref: 1–2)	7.4 (2.0, 27.2) p=0.003	6.1 (1.6, 22.8) p=0.007	4.7 (2.1, 10.2) p<0.001	4.4 (2.0, 9.9) p<0.001	0.5 (0.3, 1.001) p=0.0502		1.6 (0.5, 5.2) p=0.47
Deyo-Charlson (per 1 pt increase)	1.2 (1.1, 1.5) p=0.006	1.2 (1.0, 1.4) p=0.049	1.1 (0.97, 1.2) p=0.21		1.0 (0.9, 1.2) p=0.61		0.7 (0.5, 1.04) p=0.08
BMI (per 5-point increase)	0.9 (0.6, 1.5) p=0.70		0.95 (0.8, 1.2) p=0.66		1.2 (0.9, 1.5) p=0.25		1.1 (0.8, 1.6) p=0.45
Prior history of heart disease	---	---	---	3.2 (1.4, 7.0) p=0.005	1.9 (0.9, 3.8) p=0.08		0.8 (0.2, 2.8) p=0.77
Prior history of thromboembolism	1.5 (0.2, 11.7) 0.70		4.1 (1.9, 8.8) p<0.001	<.001	---	---	---	---

^aMultivariable backward selection logistic regression models examined all variables that were significant in univariate analyses with p<0.05; for 90-day thromboembolic complications, none of the variables were significant in univariate analyses and therefore, multivariable analyses could not be performed

ASA, American Society of Anesthesiology; BMI, body mass index; NS, not significant;

---, not adjusted since the analyses were done separately for those with and without respective prior events