Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology
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Cancer Epidemiol. Biomarkers Prev. · Aug 2006
Comparative StudyValidity and reliability of adult recall of past sun exposure in a case-control study of multiple sclerosis.
Measurement of past sun exposure through recall by adults has the potential for measurement error. We aimed to investigate aspects of validity and reliability of self-reported past sun exposure. ⋯ The results of this study provide further evidence that adults are able to recall past sun exposure with shown validity and reliability and present information about the possible reasons for the good reliability of recalled sun exposure measures.
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Cancer Epidemiol. Biomarkers Prev. · Aug 2006
A follow-up study of physical activity and incidence of colorectal polyps in African-American women.
Physical activity is associated with a reduced risk of colon cancer, but the effect of activity on colorectal adenomas, which are precursors to colon cancer, is uncertain. The influence of physical activity on colorectal adenomas among African-American women is of particular interest because African-American women have an increased risk of colon cancer relative to other U.S. women. ⋯ Increased physical activity is associated with a reduced incidence of colorectal polyps among African-American women.