See L-C, Shen Y-M, Lo Y-J
Department of Public Health, College of Medicine, Change Gung University, Taoyuan, Taiwan.
BJOG. 2007 Aug;114(8):1023-7. doi: 10.1111/j.1471-0528.2007.01393.x. Epub 2007 Jun 12.
Whether foreign-born status confers a protective effect on preterm birth in Taiwan was investigated using singleton live birth data from the 2004 Taiwan Birth Registry (n = 211,946). Newborns of foreign-born mothers (FBMs) comprised 13.7% of the population. The preterm birth rate of newborns of FBMs (5.9%) was significantly lower than that of newborns of Taiwan-born mothers (TBMs) (8.0%) (P < 0.0001). After having adjusted for predisposing maternal factors or adverse pregnancy conditions, newborns of FBMs still had a lower risk in preterm birth than that of TBMs, with an odds ratio of 0.74 and 95% confidence interval between 0.71 and 0.79. Selection was hypothesised to explain the low preterm birth rate in FBMs.
利用2004年台湾出生登记处的单胎活产数据（n = 211,946），研究了在台湾外籍身份是否对早产具有保护作用。外籍母亲所生新生儿（FBMs）占总人口的13.7%。FBMs所生新生儿的早产率（5.9%）显著低于台湾本地母亲所生新生儿（TBMs）的早产率（8.0%）（P < 0.0001）。在对母亲的易感因素或不良妊娠状况进行调整后，FBMs所生新生儿的早产风险仍低于TBMs，优势比为0.74，95%置信区间在0.71至0.79之间。研究假设选择因素可解释FBMs早产率较低的现象。
