Table 6.

Generalized Estimating Equation Model for Total Number of Surgeries

Variable		Coefficient	95% CI	p	% Increase1
Age		−0.0023	(−0.0034, −0.0011)	<.001	−0.2
BMI		−0.0021	(−0.0049, 0.0007)	0.149	−0.2
Procedure type
	TE		-Reference-
	DTI	−0.4816	(−0.6029, −0.3603)	<.001	−38.2
	PTRAM	−0.1856	(−0.2969, −0.0744)	0.001	−16.9
	FTRAM	−0.1708	(−0.2665, −0.0752)	0.001	−15.7
	DIEP	−0.1438	(−0.2160, −0.0715)	<.001	−13.4
	LD	−0.0568	(−0.1054, −0.0083)	0.022	−5.5
	SIEA	−0.1980	(−0.2618, −0.1341)	<.001	−18.0
With postoperative complication		0.1827	(0.1387, 0.2267)	<.001	20.0
Bilateral reconstruction		−0.0037	(−0.0344, 0.0269)	0.812	−0.4
Prophylactic mastectomy		−0.0566	(−0.0922, −0.0209)	0.002	−5.5
Delayed timing		0.0472	(0.0078, 0.0865)	0.019	4.8
Diabetes		−0.1167	(−0.1606, −0.0727)	<.001	−11.0
Radiation
	None		-Reference-
	Before reconstruction	−0.0482	(−0.0851, −0.0114)	0.010	−4.7
	During or after reconstruction	−0.1476	(−0.1934, −0.1018)	<.001	−13.7
Chemo during/after reconstruction		−0.0387	(−0.0696, −0.0077)	0.014	−3.8
Race
	White		-Reference-
	Black	−0.0267	(−0.1136, 0.0601)	0.546	−2.6
	Other	−0.0140	(−0.0690, 0.0411)	0.619	−1.4

^1.Computed as 100* {exp(Coefficient)-1}.