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James C. Maher, MD
Marshall, Mich

JAMA. 1994;272(3):199.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

To the Editor.

—The article by Dr Davis and colleagues¹ is statistically confusing and contains statements that are not borne out by the data presented. For example, in Table 5, the male cohort aged 20 to 25 years in 1973 to 1977 must be the cohort 25 to 29 years from 1978 to 1982 and 30 to 35 years between 1983 and 1987. This cohort increases from 3.6 million to 4.128 million during that period. Despite the 5700 cancer deaths, the population was enlarging. I fail to see how "[m]en born in 1948 through 1957 have developed more than three times more cancer not related to smoking than did those born at the last century's end," when the incidence of nonsmoking cancer in men born in 1898 to 1907 is 2.7%, while the risk for those born from 1948 through 1957 is 0.03%.

While these data may show both . . . [Full Text PDF of this Article]

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