A Pooled Analysis of Breastfeeding and Breast Cancer Risk by Hormone Receptor Status in Parous Hispanic Women.

ABSTRACT:

Background

Data on breastfeeding and breast cancer risk are sparse and inconsistent for Hispanic women.

Methods

Pooling data for nearly 6,000 parous Hispanic women from four population-based studies conducted between 1995 and 2007 in the United States and Mexico, we examined the association of breastfeeding with risk of breast cancer overall and subtypes defined by estrogen receptor (ER) and progesterone receptor (PR) status, and the joint effects of breastfeeding, parity, and age at first birth. We calculated odds ratios (ORs) and 95% confidence intervals (CIs) using logistic regression.

Results

Among parous Hispanic women, older age at first birth was associated with increased breast cancer risk, whereas parity was associated with reduced risk. These associations we

SUBMITTER: Sangaramoorthy M 

PROVIDER: S-EPMC6472273 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature