The Confounding Role of Other Dietary Factors. Another possible explanation for the lack of a positive effect of fiber on colon cancer involves the potential confounding role of starch.
After the exclusion of subjects who died during the first five years of follow-up and after adjustment for confounding factors, a weight loss of more than 4.
Despite these contradictory data, claims of carnitine's efficacy persist based on anecdotal testimonials. Unfortunately, testimonials do not control for confounding variables which can make it difficult to separate cause and effect, ...
In an editorial that accompanies the study, experts say the jury is still out on the health effects of low-carb eating plans because survey-based dietary research is unable to control for all potential confounding factors.
 See also: Health, Dietary, Metabolism, Nutrition, Fat
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