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本调查与分析旨在干预增加膳食优质钙、蛋白质摄入量以改善我省儿童身高与体重的不足。一、调查内容与方法（一）调查对象为贵阳、惠水、毕节、兴义、铜仁5个县（市、区）农村20个乡（镇），汉族、苗族、布依族、侗族3～5岁儿童，按分层原则随机抽取男童1184名、女童871名进行?
This survey and analysis aims to intervene in increasing dietary intake of high-quality calcium and protein to improve the deficiencies of children’s height and weight in our province. I. Contents and Methods of Investigation (I) The survey targets 20 villages (towns) in rural areas of 5 counties (cities and districts) in Guiyang, Huishui, Bijie, Xingyi and Tongren counties, 3 to 5 Han, Miao, Buyi and Dongs Year-old children, according to the principle of stratification randomly selected 1184 boys, girls 871?