Errors in Estimating Food Consumption from the Menu with Description of Approximate Quantity of Consumed Food

概要

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On the daily meal of 30 students studying nutritional sciences at a women's junior college, the actual weight of consumed foodstuffs was compared with the estimated amount from the menu with description of approximate weight of cooked food. The estimation from the menu was conducted by 3 dietitians and 6 nutritionists of experience.<BR>(1) The average estimate on each foodstuff and nutrient by 9 estimaters showed a significant linear regression on the actual value for all the foodstuffs and nutrients. Without exception, regression coefficients were smaller than 1, and intercepts on the axis of estimated value were greater than 0, <I>i. e.</I>, the average estimate became smaller than the actual in consumption of large amount, and greater than the actual in consumption of small amount.<BR>(2) The deviation and variation of estimation were dependent upon the estimater, the foodstuff, and the nutrient.
公益社団法人日本栄養・食糧学会の論文