Table 6.

Association between treatment and change^a in %MD

		Adjusted for age and BMIb			Adjusted for age, BMIb, and other treatments
	Number	Estimated %MD changec	95% CI	p	Estimated %MD changec	95% CI	p
Radiation
No	142	Reference			Reference
Yes	325	0.2	−2.1, 2.5	0.89	0.7	−1.6, 3.0	0.57
Chemotherapy
No	161	Reference			Reference
Yes	306	−2.9	−5.1, −0.7	0.01	−3.0	−5.2, −0.8	0.008
Tamoxifen
No	238	Reference			Reference
Yes	229	−2.8	−4.9, −0.7	0.009	−3.0	−5.1, −0.9	0.006

Abbreviations: %MD percent mammographic density, BMI body mass index, CI confidence interval

^aBetween prior to/at first diagnosis (36 months prior up to 1 month post diagnosis) and post diagnosis (more than 6 and up to 48 months post diagnosis)

^bEstimated BMI at time of mammogram

^cEstimated change in %MD (post diagnosis minus prior to/at diagnosis) associated with each treatment modality