American Journal of Clinical Nutrition, Vol 48, 575-586, Copyright © 1988 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Compliance in a randomized clinical trial of dietary fat reduction in patients with breast dysplasia

H Lee-Han, M Cousins, M Beaton, V McGuire, V Kriukov, M Chipman and N Boyd
Ludwig Institute for Cancer Research, Toronto, Canada.

Dietary compliance was studied in 57 women participating for 1 y in a randomized clinical trial of dietary fat reduction. Nutrient analysis of food records, collected at 0, 6, and 12 mo, was compared with changes observed in lipid profiles and with chemical analysis of duplicate diets. Both food records and duplicate meals showed a significant decrease in fat intake (from 36 to 23% of total calories, p less than 0.0001) and a significant increase in carbohydrate (from 43 to 56% of total calories, p less than 0.0001) in the intervention group. The calculated nutrient intake from food records tended to overestimate the intake of protein, fat, and carbohydrate compared with the chemically analyzed method. The mean level of plasma cholesterol in the intervention group was significantly reduced (7.3%, p less than 0.01) in the first 6 mo after a reduction in dietary fat but the levels observed did not differ significantly between the groups at any time.

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