A total of 35,533 men from 427 study sites in the United States, Canada, and Puerto Rico were randomised between August 22, 2001, and June 24, 2004.
The primary analysis included 34, 887 men who were randomly assigned to one of four treatment groups: 8,752 to receive selenium; 8,737, vitamin E; 8,702, both agents, and 8,696, placebo.
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Analysis reflects the final data collected by the study sites on their participants through July 5, 2011.
What did the researchers learn?
Compared with the placebo in which 529 men developed prostate cancer, 620 men in the vitamin E group developed prostate cancer, as did 575 in the selenium group, and 555 in the selenium plus vitamin E group.
Source: Daily Express
