Graham A. Colditz

How to use the evidence: assessment and application of scientific evidence

How study design affects outcomes in comparisons of therapy. I: Medical

Abstract We analysed 113 reports published in 1980 in a sample of medical journals to relate features of study design to the magnitude of gains attributed to new therapies over ...

Physical activity and colon cancer prevention: a meta-analysis

Although an inverse association between physical activity and risk of colon cancer is well established, a formal estimate of the magnitude of this risk reduction that includes r...

A META-ANALYSIS OF PHYSICAL ACTIVITY IN THE PREVENTION OF CORONARY HEART DISEASE

Evidence for an independent role of increased physical activity in the primary prevention of coronary heart disease has grown in recent years. The authors apply the techniques o...

Adiposity as Compared With Physical Activity in Predicting Mortality Among Women

Some believe that improved physical fitness can counter the effects of overweight and obesity on illness and death. If so, the implication is that obesity may be a less importan...