. Author manuscript; available in PMC: 2015 Jul 20.

Published in final edited form as: Clin Breast Cancer. 2011 Mar;11(1):33–38. doi: 10.3816/CBC.2011.n.006

Table 3.

Multivariable Analysis of Factors Associated With Mastectomy for DCIS

Variable	Odds Ratio	95% CI	P Value
MRI	3.16	1.22–8.18	.018
Age^a	0.95	0.90–0.99	.031
Multifocality	1.98	0.73–5.35	.18
Family History	1.35	0.53–3.41	.53
DCIS Size, cm	1.12	0.99–1.27	.080

Compared with youngest age category (≤ 45) as referent group.

Abbreviations: DCIS = ductal carcinoma in situ; MRI = magnetic resonance imaging