Modifiable risk factors for the prevention of bladder cancer: a systematic review of meta-analyses.

Eur J Epidemiol · 2016 · PMC5010611 · PMID 27000312

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a positive trendno p-value reported

Their dose–response associations showed a positive trend with increasing intensity of smoking and number of pack years, reaching a plateau from about 15 cigarettes/day and 50 pack-years.

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