Table 4.

Univariate and multivariable generalized estimating equation model of flap loss.

		Univariate analysis
		OR	(95% CI)	p-Value
Age > 60 yr	6/204 (2.9)	0.49	(0.20–1.20)	0.118
Sex	34/708 (4.8)	0.55	(0.19–1.63)	0.285
Vein grafting	2/26 (7.7)	1.61	(0.37–7.06)	0.530
Prior radiation therapy	22/320 (6.9)	1.94	(1.00–3.75)	0.050
Prior chemotherapy	19/309 (6.1)	1.48	(0.77–2.84)	0.243
Prior free flap reconstruction	26/416 (6.3)	1.82	(0.91–3.67)	0.093
HTN	7/222 (3.2)	0.53	(0.23–1.22)	0.134
DM	5/121 (4.1)	0.79	(0.30–2.06)	0.624
Liver cirrhosis	0/12 (0)
Renal failure	0/3 (0)
Contralateral recipient vessels	5/106 (4.7)	0.93	(0.35–2.43)	0.875

DM, diabetes mellitus; HTN, hypertension.