Table 3.

Height, weight, and BMI and risk of breast cancer before and after adjustment for percentage of mammographic density: matched analysis

Variable	All subjects (n = 1,114 pairs)			Premenopausal group (n = 162 pairs)			Postmenopausal group (n = 727 pairs)
Variable		β (SE)*	P^†	β (SE)	P	β (SE)	P
Height^‡ (cm), not adjusted for density	0.0007 (0.007)	0.92	0.0003 (0.016)	0.98	0.0082 (0.009)	0.34
Height^§ (cm), adjusted for density	0.0006 (0.007)	0.94	0.0066 (0.017)	0.70	0.0072 (0.009)	0.41
Weight^‡ (kg), not adjusted for density	0.0032 (0.004)	0.41	−0.0119 (0.010)	0.21	0.0084 (0.005)	0.09
Weight^§ (kg), adjusted for density	0.0139 (0.004)	0.001	0.0036 (0.011)	0.73	0.0185 (0.006)	0.001
BMI^‡ (not adjusted for density)	0.0080 (0.011)	0.45	−0.0387 (0.028)	0.17	0.0159 (0.014)	0.24
BMI^§ (adjusted for density)	0.0392 (0.012)	0.001	0.0053 (0.031)	0.87	0.0446 (0.015)	0.003

↵* β is the maximum likelihood estimate of the variable.
↵† P value: test for β = 0.
↵‡ Adjusted for the following risk factors: age at menarche, age at first birth, parity, number of live births, menopausal status, age at menopause, hormone replacement therapy (ever/never), breast cancer in first-degree relatives (0, 1, 2+). Menopausal status was omitted from the analysis for the separate menopausal groups, and age at menopause from the analysis of the premenopausal group.
↵§ Adjusted for the risk factors above and percentage of mammographic density.