Table 3.

Multivariate Analysis of Margin Positivity.^*

Factor	Odds Ratio (95% CI)	P Value
Hispanic ethnic group	4.76 (0.77–29.43)	0.09
Presence of DCIS	1.11 (0.36–3.39)	0.86
Size of DCIS	1.87 (1.40–2.49)	<0.001
Standard partial mastectomy	2.06 (0.98–4.32)	0.06

^*The comparator groups for the listed factors are as follows: for Hispanic ethnic group, the comparator group was non-Hispanic ethnic group; for presence of DCIS, absence of DCIS; and for standard partial mastectomy, cavity shave margin. The size of the tumor in patients with DCIS was analyzed as a continuous variable, such that the odds ratio reflects the odds of having positive margins per incremental centimeter. CI denotes confidence interval.