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Table 1: Demographic and imaging characteristics differences between the 2 groups^{^a}
Group I Group II P Value
No. of patients 19 5 NA
Sex (male/female) 14:5 2:3 .29
Age (yr) 63.9 (SD, 9.5) 58.0 (SD, 5.7) .20
BMI (kg/m²) 24.1 (22.4–29.3) 21.1 (16.1–24.7) .14
History of smoking 17/19 5/5 1
History of HT 4/19 2/5 .57
History of DM 1/19 2/5 .10
History of previous radiation 19/19 5/5 1
History of previous chemotherapy 13/19 4/5 1
Ischemia time (mins) 60 (45–95) 105 (90–109) .34
Presence of wound infection 1/19 3/5 .10
Presence of fluid collection 7/19 1/5 .38
Presence of pedicle vascular 7/19 4/5 .14
 structure (Venous thrombosis: 1/5)
Note:—NA indicates not applicable; BMI, body mass index; HT, hypertension; DM, diabetes mellitus.
↵a Groups I and II represent the group with successful free flap reconstruction and the group with wound failure, respectively. Values were described as mean (SD) or median (IQR).

	Group I	Group II	P Value
No. of patients	19	5	NA
Sex (male/female)	14:5	2:3	.29
Age (yr)	63.9 (SD, 9.5)	58.0 (SD, 5.7)	.20
BMI (kg/m²)	24.1 (22.4–29.3)	21.1 (16.1–24.7)	.14
History of smoking	17/19	5/5	1
History of HT	4/19	2/5	.57
History of DM	1/19	2/5	.10
History of previous radiation	19/19	5/5	1
History of previous chemotherapy	13/19	4/5	1
Ischemia time (mins)	60 (45–95)	105 (90–109)	.34
Presence of wound infection	1/19	3/5	.10
Presence of fluid collection	7/19	1/5	.38
Presence of pedicle vascular	7/19	4/5	.14
structure		(Venous thrombosis: 1/5)