HANS URY, PH.D.
To the editor: The article by Aronow and associates (1) is a valuable and interesting addition to air pollution epidemiology. I should like to comment on the statistics used in the report.
In the Method section they state only that an analysis of variance test was done, and a textbook reference is given. I would have appreciated a more detailed explanation, such as "two-way classification analysis of variance tests and Scheffé multiple comparisons were calculated," since there are a good many multiple comparison procedures. After struggling with the data for a while, I reached the conclusion that the Scheffé method
URY H. Statistical Method in Aronow Study. Ann Intern Med. ;78:790–791. doi: 10.7326/0003-4819-78-5-790
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Published: Ann Intern Med. 1973;78(5):790-791.
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