Dibley M J, Goldsby J B, Staehling N W, Trowbridge F L
Division of Nutrition, Centers for Disease Control, Atlanta, GA.
Am J Clin Nutr. 1987 Nov;46(5):736-48. doi: 10.1093/ajcn/46.5.736.
The World Health Organization recommended in 1978 that the National Center for Health Statistics/Centers for Disease Control growth reference curves be used as an international growth reference. To permit the expression of growth in terms of standard deviations, CDC developed growth curves from the observed data that approximate normal distributions. Because of significant skewness, standard deviations for weight-for-age and weight-for-height were calculated separately for distributions below and above the median. Standard deviations below the median were calculated from the 5th, 10th, 25th, and 50th observed percentiles while those above the median were based on the 50th, 75th, 90th, and 95th observed percentiles. Height-for-age distributions did not show significant skewness, thus, the standard deviations were calculated based on all six of the above observed percentiles. The normalized reference curves provide a highly useful data base that permits the standardized comparison of anthropometric data from different populations.
1978年，世界卫生组织建议将美国国家卫生统计中心/疾病控制中心的生长参考曲线用作国际生长参考标准。为了能够以标准差来表示生长情况，美国疾病控制与预防中心根据近似正态分布的观测数据绘制了生长曲线。由于存在显著的偏态，针对年龄别体重和身高别体重，分别对中位数以下和以上的分布计算标准差。中位数以下的标准差根据第5、第10、第25和第50观测百分位数计算，而中位数以上的标准差则基于第50、第75、第90和第95观测百分位数。年龄别身高分布未显示出显著偏态，因此，标准差是根据上述所有六个观测百分位数计算得出的。标准化参考曲线提供了一个非常有用的数据库，可用于对不同人群的人体测量数据进行标准化比较。
