. Author manuscript; available in PMC: 2016 Jun 1.

Published in final edited form as: Ann Surg Oncol. 2014 Oct 31;22(6):2003–2009. doi: 10.1245/s10434-014-4200-x

Table 4.

Comparison of Breast-Conserving Surgery (BCS) Surgical Site Infection (SSI) Rates by Index Versus Re-Excision Procedure

	Total Procedures	SSI n (%)	P^a	Adjusted Odds Ratio (95% CI)^b
Index BCS procedure	23,001	418 (1.82)		1.00
BCS procedure 2⁺	5,826	142 (2.44)	0.002	1.34 (1.07, 1.68)
No needle localization	13,470	296 (2.20)		1.00
Needle localization	15,357	264 (1.72)	0.003	0.86 (0.71, 1.05)
No sentinel lymph node dissection	22,072	416 (1.88)		1.00
Sentinel lymph node dissection	6,755	144 (2.13)	0.198	1.57 (1.27, 1.94)
No axillary lymph node dissection	21,746	360 (1.66)		1.00
Axillary lymph node dissection	7,081	200 (2.82)	<0.001	2.03 (1.67, 2.47)
No brachytherapy catheter placement	28,460	550 (1.93)		1.00
Brachytherapy catheter placement	367	10 (2.72)	0.275	1.28 (0.67, 2.42)

Univariate chi-square test.

Multivariable analysis of parameter estimates in generalized estimating equation (GEE) model, accounting for clustering of procedures within women.