Table 4.

Relative odds that a patients with stage I/II breast cancer would undergo breast conservation surgery as opposed to mastectomy, given that the physician performing surgery was female (vs male), stratified by year of diagnosis^*

Year of diagnosis	Odds ratios	95% Confidence interval	P Value
1991–1999	1.35	1.17–1.57	<0.0001
2000–2002	1.37	1.21–1.54	<0.0001

^*Each model controls for age, year of diagnosis, race, hormone receptor status, socioeconomic status, breast cancer grade, marital status, comorbidity, physician characteristics and physician volume.