Table 5.

Unadjusted Univariate Cox Regression Analysis of Risk Factors for Revision and Failure of Knee Flap Procedures

		Revision
Risk factor	N	HR (95% CI)	P value
Infection	38	2.62 (0.97–7.03)	0.056
BMI > 40 kg/m²	6	0.32 (0.04–2.34)	0.260
Age > 65 years	24	0.30 (0.11–0.81)	0.018
Tabaco use	27	1.46 (0.65–3.28)	0.354
Diabetes	13	1.13 (0.45–2.86)	0.796
Peripheral Vascular Disease	8	1.01 (0.30–3.44)	0.99
Gender female	30	1.36 (0.60–3.07)	0.459
> 2 Prior surgeries	6	6.11 (2.34–15.95)	< 0.001
Resistant organism	14	0.75 (0.28–1.97)	0.552