Guthrie H A
J Am Diet Assoc. 1977 Jul;71(1):35-40.
An analysis of nutrient intake and of plate waste for four hundred elementary school children, when an option of chocolate milk was provided in the school lunch program, shows significantly higher intakes of calcium and riboflavin, lower intakes of iron, greater food waste, and significantly less waste of milk. Participation in the school lunch program was not affected by the announced availability of flavored milk in ten schools serving 3,700 children; however, significantly (p less than 0.01) more children bought milk alone.
一项针对四百名小学生的营养摄入量和餐盘食物浪费情况的分析表明，当学校午餐计划中提供巧克力牛奶选项时，钙和核黄素的摄入量显著更高，铁的摄入量更低，食物浪费更多，而牛奶浪费显著更少。在为3700名儿童提供服务的十所学校中，宣布供应调味牛奶并未影响学生参与学校午餐计划；然而，单独购买牛奶的儿童数量显著增加（p小于0.01）。
