Secondhand smoking increases bladder cancer risk in nonsmoking population: a meta-analysis.

ABSTRACT:

Background

Tobacco smoking has been widely acknowledged to be the most important risk factor for bladder cancer. However, whether secondhand smoking (SHS) increases the risk of bladder cancer still remains uncertain. We conducted a meta-analysis about the risk of bladder cancer and lifetime SHS and childhood SHS.

Materials and methods

We searched PubMed, EMBASE, Web of Science, and Chinese National Knowledge Infrastructure (CNKI) up to March 12, 2018, and checked references of the retrieved articles and relevant reviews to include 14 studies. Relative risk (RR) and 95% confidence interval (CI) were used to assess this risk.

Results

The pooled RR of 14 eligible studies based on the retrieved articles and relevant reviews illustrated a significantly increased risk of bl

SUBMITTER: Yan H 

PROVIDER: S-EPMC6159806 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature