Table 3 Multivariable linear regression estimates of dense area (cm 2 ) stratified by season of blood draw (January-June, July-December), New York city multiethnic breast cancer project, 2007-2008
From: Mammographic density and serum 25-hydroxyvitamin D levels
Characteristic | β coefficient | 95% CI | P-value | |
|---|---|---|---|---|
January-June (N = 91) | ||||
Serum 25(OH)D (ng/ml) | −0.046 | −0.338 | 0.246 | 0.757 |
Age at mammogram (years) | −0.813 | −1.421 | −0.205 | 0.009 |
Race/ethnicity | ||||
White | Reference | |||
African American | 6.014 | −3.463 | 15.491 | 0.210 |
African Caribbean | 8.406 | −2.912 | 19.724 | 0.143 |
Hispanic/Other | −2.480 | −13.841 | 8.882 | 0.665 |
Education | ||||
≤High school | −1.405 | −9.837 | 7.027 | 0.741 |
Some college/associate degree | −4.541 | −13.109 | 4.026 | 0.295 |
Bachelor, master, doctoral degree | Reference | |||
Body mass index (kg/m2) | 0.056 | −0.540 | 0.653 | 0.851 |
July-December (N = 23) | ||||
Serum 25(OH)D (ng/ml) | −0.254 | −0.487 | −0.022 | 0.034 |
Age at mammogram (years) | −0.272 | −0.711 | 0.167 | 0.204 |
Race/ethnicity | ||||
White | Reference | |||
African American | 5.525 | −1.281 | 12.332 | 0.103 |
African Caribbean | 1.711 | −5.984 | 9.406 | 0.639 |
Hispanic/Other | 3.002 | −8.678 | 14.682 | 0.588 |
Education | ||||
≤High school | 0.492 | −6.070 | 7.053 | 0.874 |
Some college/associate degree | −1.411 | −7.427 | 4.604 | 0.621 |
Bachelor, master, doctoral degree | Reference | |||
Body mass index (kg/m2) | −0.892 | −1.323 | −0.462 | 0.001 |