Surgical Site Infections in Breast Surgery: The Use of Preoperative Antibiotics for Elective, Nonreconstructive Procedures

Table 2

Clinical characteristics and outcomes of the patient population.

	No infection	Surgical site infection	value^†
Single dose of antibiotic given				<0.0001
No	385 (49%)	16 (23%)
Yes	399 (51%)	55 (77%)
Sex			0.4000
Female	764 (97%)	71 (100%)
Male	20 (3%)	0 (0%)
Age (years)			0.5329
>50	451 (58%)	38 (54%)
≤50	333 (42%)	33 (46%)
Body mass index (BMI)			0.0274
>25	593 (76%)	62 (87%)
≤25	191 (24%)	9 (13%)
Diabetes			0.2316
No	701 (89%)	60 (85%)
Yes	83 (11%)	11 (15%)
Wire localization			<0.0001
No	444 (57%)	63 (89%)
Yes	340 (43%)	8 (11%)
Surface area			<0.0001
Small surface area	427 (54%)	16 (23%)
Large surface area	357 (46%)	55 (77%)
Mastopexy or reduction mammaplasty			0.0003
No	556 (71%)	35 (49%)
Yes	228 (29%)	36 (51%)
Age, median (IQR)	54 years (68–43)	52 years (62–44)	0.5299^‡
BMI, median (IQR)	28.9 kg/m^2 (34.0–25.1)	33.3 kg/m^2 (38.5–29.6)	<0.0001^‡

value was derived from Fisher’s Exact test.
value was derived from Wilcoxon Rank-Sum test.
IQR: interquartile range.