Screening v no screening for prostate cancer in men*

OutcomesNumber of trials (n)ScreeningNo screeningRRI (95% CI)NNT (CI)
*RCT  =  randomised controlled trial. Other abbreviations defined in glossary; RRI, NNT, and CI calculated from data in article.
Mortality at 8 years1 RCT (46 486)0.5%0.5%1% (−24 to 33)Not significant
Mortality at 15 years1 quasi-RCT (9026)1.3%1.3%4% (−36 to 68)Not significant