Table 3.

Comparison of complications and Relative Risk calculation.

Table 3	Total	Double DIEP	Double TMG	p-Value
vascular insufficiency	15/238 (6.3 %)	6/152 (3.9 %)	9/86 (10.5 %)	0.0468
Relative Risk double TMG vs. double DIEP:	2.65
partial flap necrosis	13/238 (5.5 %)	6/152 (3.9 %)	7/86 (8.1 %)	0.1716
Relative Risk double TMG vs. double DIEP:	2.06
flap loss	7/238 (2.9 %)	4/152 (2.6 %)	3/86 (3.5 %)	0.7071
Relative Risk double TMG vs. double DIEP:	1.33
late fat necrosis	6/238 (2.5 %)	6/152 (3.9 %)	0/86 (0.0 %)	0.0898
Relative Risk double TMG vs. double DIEP:	0.00
donor site complication	25/119 (21.0 %)	18/76 (23.7 %)	7/43 (16.3 %)	0.9075
Relative Risk double DIEP vs. double TMG:	1.45
erythrocyte concentrate substitution	21/119 (17.6 %)	7/76 (9.2 %)	14/43 (32.6 %)	0.0013
Relative Risk double TMG vs. double DIEP:	3.53