American Journal of Clinical Nutrition, Vol 34, 335-342, Copyright © 1981 by The American Society for Clinical Nutrition, Inc

ORIGINAL RESEARCH COMMUNICATIONS

Relationship between calculated dietary and crude fiber intakes of 200 college students

JA Marlett and RL Bokram

Two hundred college students recorded dietary intakes for 2 consecutive days. Records were analyzed for 12 nutrients, and crude (CF) and dietary fiber (DF). Means of the 2 days were calculated to represent the daily intake of each student. The crude and dietary fiber provided by cereals and legumes, vegetables, fruits, and miscellaneous sources were determined for a subpopulation of 50 students. Mean (+/-SD) daily CF intake of the population was 4.07 +/- 2.17 g, of DF, 15.36 +/- 7.96 g. When related to energy intake, women (n = 143) consumed significantly more CF and DF than the men (n = 57). Only the cereal and legume group provided appreciably more DF than CF, 32.4 versus 18.8%, of the total daily intake of the subpopulation. The mean DF: CF ratio for the population was 3.9 +/- 1.0 and intakes of the two measures of fiber were highly correlated, r = 0.86. Intakes of CF/1000 kcal and the number of servings of cereal products may indicate when the daily DF intake is less than or equal to 3 or greater than or equal to 5 times the daily CF intake. These data suggest that for the majority of the college-aged population we studied, who consumed a wide variety of foods, a daily DF intake ranged from 3 to 5 times the daily CF intake.

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