Passive Smoking and Breast Cancer Risk among Non-Smoking Women: A Case-Control Study in China.

ABSTRACT:

Background

The role of passive smoking on breast cancer risk was unclear. This study aimed to evaluate the association between passive smoking and breast cancer risk among Chinese women.

Methods/principal findings

A hospital-based case-control study, including 877 breast cancer cases and 890 controls, frequency-matched by age and residence, was conducted. A structured questionnaire was used to collect information on passive smoking history through face-to-face interview by trained interviewers. Unconditional logistic regression models were used to estimate the association between passive smoking and breast cancer risk. A positive association between any passive smoking exposure and breast cancer risk was observed. Compared with women who were never exposed to passive smoking

SUBMITTER: Li B 

PROVIDER: S-EPMC4411087 | biostudies-literature | 2015

REPOSITORIES: biostudies-literature