Characteristics of included women diagnosed with incident invasive breast cancer from 1975–2010 in 18 Surveillance Epidemiology End Results (SEER) registries.
Homocysteine is a sulfur-containing amino acid that is formed during the metabolism of methionine. This amino acid is not part of proteins, but is an important intermediate product in biochemical reac
aAge standardized (5-year age groups) to the total male population included in the study. bRRs for all risk factors shown estimated simultaneously (i.e. adjusted for each other). cRRs compared to “No