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

In a recent issue of the ARCHIVES, we read with interest an article¹ and its accompanying editorial² on the relation of physical activity to mortality risk in persons with diabetes. In their article, Gregg et al^1(p1440) state that "only 2 studies have examined the association of physical activity with the incidences of disease and death among persons with diabetes"^3-4 and that the findings of their study have greater external validity than previous work because they examined "a nationally representative sample that was probably more diverse and had more comorbid conditions typical of diabetic persons."^1(p1445) In the editorial, Hu and Manson^2(p1397) comment that "only one previous study examined the association between walking and cardiovascular events among diabetic patients."³ The authors are incorrect in their assertions.

We are aware of 3 further publications^5-7 examining the association of physical activity with mortality experience in persons with diabetes, which Gregg et al¹ omitted. Of . . . [Full Text of this Article]

G. David Batty, PhD
Copenhagen, Denmark

Martin J. Shipley, MSc
London, England

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