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在进行人群营养调查时,需要寻找一种比较同一总体内几组儿童发育特征的敏感方法。一个很重要但尚未被注意的问题,是选择和推荐一种或一组简便而有效的统计指标,用来描述儿童的身体发育。常用的统计指标,均数和标准差,仅仅对于那些与样本分布的中位数有显著性差别的数值很敏感。少数过度肥胖的儿童会使体重均值偏高,能相当大地增加年龄一体重或身高一体
When conducting a population nutrition survey, you need to find a sensitive method to compare the developmental characteristics of several groups of children within the same population. A very important issue that has not yet been noticed is the selection and recommendation of one or a set of simple and effective statistical indicators that describe the child’s physical development. The commonly used statistical indicators, mean and standard deviation, are sensitive only to values that are significantly different from the median of the sample distribution. A few children who are overweight can make the weight mean higher and can increase age-weight or height.