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The participants stopped taking the vitamin
supplements in April 1993. However, in order to evaluate the
long-term effects of the vitamins on cancer incidence, and overall
and cause-specific mortality, they were followed after the trial
ended using data from the national registries in Finland. The
researchers acquired additional data for cancer incidence and
mortality related to specific causes through April 2002 (nine
years beyond the end of the trial), and for total mortality
through December 2003 (ten years beyond the end of the trial).
Text excerpted from the NCI Press Release: Alpha-Tocopherol,
Beta-Carotene Cancer Prevention (ATBC)
Study (http://www.nci.nih.gov/newscenter/pressreleases/ATBCfollowup)
For more information regarding study design and initial findings, download
The alpha-tocopherol, beta-carotene lung cancer prevention study:
design, methods, participant characteristics, and compliance
(PDF) and the The
effect of vitamin E and beta carotene on the incidence of lung
cancer and other cancers in male smokers (PDF).
To view the PDF files on this site, you will
need Adobe
Acrobat Reader.
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