Table 2.

Multivariate-adjusted betas¹ for association of Mediterranean Diet Score with percent breast density.

	N	Mediterranean Diet Score			Revised Mediterranean Diet Score2
		Beta	SE	p-value	Beta	SE	p-value
All women	1,286
MDS (continuous)		−0.27	0.20	0.17	−0.33	0.20	0.09
MDS category
0–3	457	referent	--	--	referent	--	--
4–5	520	−1.32	0.87	0.13	−1.22	0.92	0.18
6–9	309	−0.54	0.92	0.56	−1.40	0.98	0.15
Non-smokers	1,110
MDS (continuous)		−0.08	0.22	0.72	−0.12	0.21	0.58
MDS category
0–3	365	Referent	--	--	referent	--	--
4–5	457	−1.15	0.92	0.21	−0.61	1.00	0.54
6–9	288	0.13	1.02	0.90	−0.58	1.08	0.59
Current smokers	176
MDS (continuous)		−1.68	0.55	0.002	−1.90	0.55	0.0005
MDS category
0–3	4	referent	--	--	referent	--	--
4–5	63	−1.88	2.09	0.37	−4.26	2.31	0.07
6–9	21	−7.17	2.77	0.01	−8.07	2.82	0.004

¹Adjusted for age, total energy intake, menopausal status, education, years of use of hormone replacement, BMI, WHR, age at menarche, parity and age at first live birth (combined variable), alcohol intake, and relation to proband. Betas represent absolute estimated mean change in percent breast density per unit increment in continuous Mediterranean Diet Score (MDS), or absolute estimated mean change in percent density relative to 0–3 category for categorized MDS.

²Revised so that for alcohol component of MDS, individual receives a score of 1 for 0 g/day of alcohol, rather than for 5–25 g/day as in original scale, and a score of 0 otherwise.