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To the Editor.— Dr Howard and colleagues¹ report a greater rate of progression of atherosclerosis in people exposed to tobacco smoke who had diabetes compared with those who did not. However, some of the participants placed in the "without diabetes" category may have diabetes that has not been diagnosed. According to the study, participants were defined as having diabetes if they reported having diabetes, if they were taking blood glucose–lowering medications, or if they had an 8-hour fasting glucose level of at least 11.1 mmol/L (200 mg/dL). Although the chosen value of 11.1 mmol/L for an 8-hour fasting glucose level is specific, it is not sensitive enough to accurately classify participants in the "with diabetes" or "without diabetes" categories that were used clinically. Current clinical practice recommendations call for a diagnostic value of 7.0 mmol/L (126 mg/dL) for an 8-hour fasting glucose level.² The accepted value during the course of . . . [Full Text of this Article]

THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES

Environmental Tobacco Smoke, Cardiovascular Disease, and the Nonlinear Dose-Response Hypothesis
Smith et al.
Toxicol Sci 2000;54:462-472.
ABSTRACT | FULL TEXT