Why do Mexican Americans give birth to few low-birth-weight infants?
Why do Mexican Americans give birth to few low-birth-weight infants?
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DOI：
10.1093/aje/152.4.347
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发表时间：
2000-08-15
影响因子：
5
通讯作者：
Wilcox, A
中科院分区：
文献类型：
--
作者：
Buekens, P;Notzon, F;Wilcox, A
尽管墨西哥裔美国人在社会经济方面处于不利地位，但他们中的低体重婴儿相对较少。当婴儿在足月时体重较重或早产较少时，低出生体重（LBW）分娩较少。作者使用1994年美国单胎活产出生证明来比较墨西哥裔美国人和非西班牙裔白人。他们发现，与非西班牙裔白人（6.1%）相比，墨西哥裔美国人（5.8%）的LBW率较低，因为墨西哥裔美国人出生的早产儿较少（3.4%对3.9%）。这一结果被两项发现所掩盖。首先，墨西哥裔美国婴儿的平均出生体重（3，343克）低于非西班牙裔白色婴儿（3，393克）。这一发现再次表明平均出生体重和LBW的独立性。其次，墨西哥裔美国人的总体早产率（10.6%）高于非西班牙裔白人（9.3%），我们的假设是，这一发现反映了记录胎龄的错误，正如墨西哥裔美国人年轻胎龄时强烈的双峰出生体重分布所示。因此，对墨西哥裔美国人中LBW悖论的进一步研究应该更多地关注胎龄而不是出生体重。
There are relatively few low-weight births among Mexican Americans, despite their socioeconomic disadvantages. Fewer low-birth-weight (LBW) births result when babies are heavier at term or when there are fewer preterm deliveries. The authors used 1994 US singleton livebirth birth certificates to compare Mexican Americans with non-Hispanic Whites. They found that the lower LBW rate among Mexican Americans (5.8%) compared with non-Hispanic Whites (6.1%) occurred because fewer small, preterm babies were born to Mexican Americans (3.4% vs. 3.9%). This result was obscured by two findings. First, the mean birth weight of Mexican American babies (3,343 g) was lower than that of non-Hispanic White babies (3,393 g). This finding again showed the independence of mean birth weight and LBW. Second, the overall preterm birth rate was higher among Mexican Americans (10.6%) than non-Hispanic Whites (9.3%), Our hypothesis is that this finding reflects errors in recorded gestational age, as illustrated by a strongly bimodal birth-weight distribution at young gestational ages for Mexican Americans. Further studies on the LBW paradox among Mexican Americans should thus focus on gestational age more than on birth weight.