Richardson D P, Lawson M
Br Med J. 1972 Dec 23;4(5842):697-9. doi: 10.1136/bmj.4.5842.697.
A survey of 565 senior schoolchildren showed that 41% took the school meal. It provided 27% of the daily recommended energy intake and 35% of the daily protein intake set by the Department of Health and Social Security. Of the children who did not take the school meal 4% had a meal which compared favourably with it, though an equal number ate no lunch at all. The remainder either brought snacks from home or bought foods which were found to be both low in protein, iron, and calcium, and high in sugar. Sweets and chips provided the main source of energy for 9% of the subjects.
一项针对565名高中生的调查显示，41%的学生在学校就餐。学校餐提供了卫生和社会保障部规定的每日推荐能量摄入量的27%以及每日蛋白质摄入量的35%。在那些不在学校就餐的学生中，4%的学生所吃的食物比学校餐要好，不过同样数量的学生根本不吃午饭。其余的学生要么从家里带零食，要么购买那些被发现蛋白质、铁和钙含量低而糖分高的食品。糖果和薯片为9%的调查对象提供了主要能量来源。
