Table 4.

Comparison of complications for patients who were super obese with those of normal weight

Complication	BMI ≥ 50 kg/m2 versus normal weight			BMI ≥ 50 kg/m2 versus BMI of 40–49 kg/m2
	HR	95% CI	p Value	HR	95% CI	p Value
Acute myocardial infarction	1.22	0.58–2.55	0.596	1.33	0.61–2.92	0.473
Deep vein thrombosis	2.25	1.17–4.32	0.016	1.67	0.83–3.37	0.148
Death	1.02	0.45–2.30	0.968	1.10	0.47–2.58	0.823
Dislocation	0.63	0.23–1.68	0.355	0.57	0.21–1.58	0.279
Pulmonary embolism	2.09	1.02–4.28	0.044	1.37	0.64–2.92	0.421
Implant failure	1.52	0.98–2.35	0.059	1.04	0.65–1.65	0.881
Periprosthetic joint infection	6.48	4.54–9.25	< 0.001	1.87	1.28–2.74	< 0.001
Pneumonia	1.30	0.79–2.14	0.304	1.20	0.71–2.03	0.500
Readmission	2.16	1.84–2.54	< 0.001	1.53	1.28–.1.82	< 0.001
Renal failure	1.93	1.55–2.40	< 0.001	1.17	0.93–1.47	0.186
Revision	2.14	1.47–3.12	< 0.001	1.13	0.76–1.70	0.537
Wound dehiscence	9.81	6.31–15.24	< 0.001	2.85	1.77–4.59	< 0.001

HR = hazard ratio.