Emerging tobacco-related cancer risks in China: A nationwide, prospective study of 0.5 million adults.

ABSTRACT:

Background

In China, cigarette consumption has increased substantially since the 1980s, almost exclusively in men. This study was aimed at assessing the emerging cancer risks.

Methods

A nationwide, prospective study recruited 210,259 men and 302,632 women aged 30 to 79 years from 10 areas of China from 2004 to 2008; approximately 18,000 incident cancers were recorded during 7 years of follow-up. Cox regression yielded adjusted risk ratios (RRs) comparing smokers (including those who had stopped because of illness but not those who had stopped by choice) with never-smokers.

Results

Among men, 68% were smokers; their overall cancer risk was significantly increased (RR, 1.44; 95% confidence interval [CI], 1.37-1.53), and it was greater in urban (RR, 1.55; 95% CI, 1.41-1.

SUBMITTER: Chen ZM 

PROVIDER: S-EPMC4584499 | biostudies-literature | 2015 Sep

REPOSITORIES: biostudies-literature