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Comparison of Diets for Weight Loss and Heart Disease Risk Reduction
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To the Editor: The study by Dr Dansinger and colleagues1 provides useful insights into the relative appeal of 4 popular diets. However, it fails to provide a meaningful comparison of their efficacy because of high attrition rates and poor adherence, with the possible exception of those participants reporting the highest adherence. A mean weight loss of 7% is reported for those participants in the highest tertile of adherence; it would be helpful if specific results or comparisons for that subgroup could be provided. In addition, because most of the participants did not follow the diet as defined, it would be more appropriate to pool the data to examine the relationships between outcomes of interest and nutrient intake rather than diet type.
A self-reported adherence level of 6 was considered to "delineate a clinically meaningful adherence level," and was maintained by 25% of participants, but this is not well described. . . . [Full Text of this Article]
John H. Kelly, Jr, MD, MPH
jhkelly@sph.llu.edu
Department of Nutrition
Loma Linda University School of Public Health
Loma Linda, Calif
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