College of Nursing and Public Health, Adelphi University, Garden City, New York, USA.
Center of Excellence in Health Equity, Training and Research, Baylor College of Medicine, Houston, TX, USA.
J Immigr Minor Health. 2021 Dec;23(6):1198-1205. doi: 10.1007/s10903-021-01157-z. Epub 2021 Feb 11.
To examine the effect of maternal age on the risk of preterm birth and its phenotypes in foreign-born compared to native-born mothers. The 2014-2017 US Birth and Fetal Death data were analyzed (N = 14,867,880). Log-binomial regression models were used to estimate adjusted prevalence ratios (APR), quantifying the association between mother's nativity and preterm birth and its phenotypes, stratified by maternal age. Foreign-born mothers had a 13% lower probability of preterm birth compared to their native-born counterparts (APR, 0.87 [95% CI 0.86-0.87]). This protective effect persisted across all preterm phenotypes. Stratification by maternal age showed a slightly elevated risk in preterm and moderate-to-late preterm for adolescent mothers. Our study supports the existence of the "foreign-born paradox" whereby foreign-born mothers experienced lower levels of preterm birth despite the disadvantages of living in an alien socio-cultural environment. This favorable birth outcome was present primarily in foreign-born mothers aged ≥ 20 years.
为了研究与本地出生母亲相比，母亲的年龄对外国出生母亲早产及其表型的风险的影响。对 2014-2017 年美国出生和胎儿死亡数据进行了分析（N=14867880）。采用对数二项式回归模型来估计调整后的流行率比（APR），定量评估母亲出生地与早产及其表型之间的关联，按母亲年龄分层。与本地出生的母亲相比，外国出生的母亲早产的可能性低 13%（APR，0.87[95%CI0.86-0.87]）。这种保护作用在所有早产表型中都持续存在。按母亲年龄分层，青少年母亲的早产和中晚期早产风险略有升高。我们的研究支持“外国出生悖论”的存在，即尽管生活在陌生的社会文化环境中存在劣势，但外国出生的母亲经历的早产水平较低。这种有利的生育结果主要出现在年龄≥20 岁的外国出生母亲中。
