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中美两国有关不同胎龄新生儿出生体重值的地区性研究报告较多。这些报告作为衡量该地区的参考标准,具有实际的应用价值。因此,有些人支持应用地区性标准。事实上,由于不可能,也不需要每个地区均研制一套参考标准,故有必要制定一套在总体上能代表一个国家目前较好水平的参考值,供本国各地区参考应用。基于这种考虑,中国以国内大陆南北方15个城市为代表调查研制了一套不同胎龄新生儿出生体重参考值,美国国家疾病控制中心(CDC)基于1980～1987年美国全国新生儿出生记录,制定一套胎儿出生体重生长标准。鉴于这2套参考标准大体上反映了中美两国不同胎龄新生
China and the United States on the birth weight of newborns of different gestational age more regional research reports. These reports serve as a reference standard for measuring the region and have practical value. Therefore, some people support the application of regional standards. In fact, since it is impossible and not necessary to develop a set of reference standards in each region, it is necessary to draw up a set of reference values which, on the whole, can represent the current good level of a country for reference in various regions of the country. Based on this consideration, China has surveyed and developed a set of reference values for birth weight of newborns with different gestational age. The United States National Centers for Disease Control and Prevention (CDC) based on the birth records of newborns from 1980 to 1987 in the United States, , To develop a set of fetal birth weight growth standards. Since these two sets of reference standards generally reflect the different gestational age newborns in China and the United States