Robillard Pierre-Yves, Boukerrou Malik, Bonsante Francesco, Hulsey Thomas C, Dekker Gustaaf, Gouyon Jean-Bernard, Iacobelli Silvia
a Service de Néonatologie , Centre Hospitalier Universitaire Sud Réunion , La Réunion , Saint Pierre , France.
b Centre d'Etudes Périnatales Océan Indien (CEPOI), Centre Hospitalier Universitaire Sud Réunion , La reunion , Saint Pierre , France.
J Matern Fetal Neonatal Med. 2018 Feb;31(3):376-381. doi: 10.1080/14767058.2017.1285897. Epub 2017 Feb 9.
To investigate the association between maternal age and spontaneous breech presentation.
Fifteen-year observational study over (2001-2015). All consecutive singleton births delivered at the Centre Hospitalier Universitaire Sud Reunion's maternity. The only single exclusion criterion was uterine malformations (N = 123) women.
Of the 60,963 singleton births, there was a linear association (χ for linear trend, p< 0.0001) between maternal age and spontaneous breech presentation. Overall rate of breech presentation was 2.7% in deliveries over 32 weeks gestation, while it was 1.9% in women aged 15 to 19 years and 4.0% in women aged 45+, with a linear progression for each 5-year age category. This linearity remained significant controlling for early prematurity (<33 weeks) and severe fetal malformations (χ for linear trend = 64, p < 0.0001). Controlling in a multiple logistic regression model for other major risk factors gestational age, female sex, primiparity, maternal age remained significantly an independent risk factor, p < 0.0001.
Maternal age (x) is an independent factor for breech presentation in singleton pregnancies after 32 weeks gestation with a linear association that may be approximated at y = 0.1x. (y: incidence, percent).
研究母亲年龄与自发性臀先露之间的关联。
对（2001 - 2015年）进行了15年的观察性研究。所有在留尼汪大学南部中心医院产科分娩的连续单胎新生儿。唯一的排除标准是子宫畸形的女性（n = 123）。
在60,963例单胎分娩中，母亲年龄与自发性臀先露之间存在线性关联（线性趋势的χ检验，p < 0.0001）。妊娠32周以上分娩中臀先露的总体发生率为2.7%，而15至19岁女性为1.9%，45岁及以上女性为4.0%，每5岁年龄组呈线性递增。在控制早产（<33周）和严重胎儿畸形后，这种线性关系仍然显著（线性趋势的χ检验 = 64，p < 0.0001）。在多因素逻辑回归模型中控制其他主要危险因素（胎龄、女性性别、初产情况）后，母亲年龄仍然是一个显著的独立危险因素，p < 0.0001。
母亲年龄（x）是妊娠32周后单胎妊娠中臀先露的独立因素，两者呈线性关联，可近似表示为y = 0.1x。（y：发病率，百分比）
