Contemporary Labor Patterns and Maternal Age
Contemporary Labor Patterns and Maternal Age
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DOI：
10.1097/aog.0b013e3182a9c92c
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发表时间：
2013-11-01
影响因子：
7.2
通讯作者：
Kominiarek, Michelle A.
中科院分区：
文献类型：
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作者：
Zaki, Mary N.;Hibbard, Judith U.;Kominiarek, Michelle A.
目的：根据产妇年龄评估产程进展和产程长度。方法：数据来自安全分娩联盟，一项来自美国19家医院的多中心回顾性研究。S.我们研究了2002年至2008年120，442例单胎足月头位胎儿的分娩孕妇，这些孕妇的结局正常，既往未进行剖宫产。产妇年龄类别为20岁以下、20-29岁、30-39岁和40岁或以上，参考年龄为20岁以下。采用区间删失回归分析确定中位通过时间（以厘米为单位递增），第95次重复调整协变量（种族、入院体重指数、糖尿病、孕龄、引产、隆乳、硬膜外使用和出生体重）。重复测量分析与八次多项式模型被用来构建平均分娩曲线为每个产妇年龄类别分层的奇偶性。初产妇的横向时间表明，从4到10 cm的进展时间随着年龄的增加而减少，直到40岁（中位数为8.5小时，而20岁至40岁的妇女为7.8小时）。29岁年龄组和30-39岁年龄组分别为7.4小时，P
OBJECTIVE: To evaluate labor progress and length according to maternal age.METHODS: Data were abstracted from the Consortium on Safe Labor, a multicenter retrospective study from 19 hospitals in the U. S. We studied 120,442 laboring gravid women with singleton, term, cephalic fetuses with normal outcomes and without a prior cesarean delivery from 2002 to 2008. Maternal age categories were younger than 20 years of age, 20-29 years of age, 30-39 years of age, and 40 years of age or older with the reference being younger than 20 years of age. Interval-censored regression analysis was used to determine median traverse times (progression centimeter by centimeter) with 95th percentiles adjusting for covariates (race, admission body mass index, diabetes, gestational age, induction, augmentation, epidural use, and birth weight). A repeated-measures analysis with an eighth-degree polynomial model was used to construct mean labor curves for each maternal age category stratified by parity.RESULTS: Traverse times for nulliparous women demonstrated the time to progress from 4 to 10 cm decreased as age increased up to age 40 years (median 8.5 hours compared with 7.8 hours in those 20-29 years of age group and 7.4 hours in the 30-39 years of age group, P