Does gestation vary by ethnic group? A London-based study of over 122000 pregnancies with spontaneous onset of labour

被引:141
作者
Patel, RR
Steer, P
Doyle, P
Little, MP
Elliott, P
机构
[1] Univ London London Sch Hyg & Trop Med, Dept Epidemiol & Populat Hlth, Epidemiol Unit, London WC1E 7HT, England
[2] Chelsea & Westminster Hosp, Imeprial Coll Fac Med, Acad Dept Obstet & Gynaecol, London, England
[3] Imperial Coll Fac Med, Dept Epidemiol & Publ Hlth, London W2 1PG, England
关键词
ethnicity; gestational length; St Mary's Maternity Information system (SMMIS); meconium; neonatal maturity;
D O I
10.1093/ije/dyg238
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
Background Evidence exists that normal gestational length varies with ethnicity. This UK-based study compares gestational length amongst a cohort of white European, Black and Asian women. Methods The cohort comprised 122 415 nulliparous women with singleton live fetuses at the time of spontaneous labour, giving birth in the former North West Thames Health Region, London, UK. Results The median gestational age at delivery was 39 weeks in Blacks and Asians and 40 weeks in white Europeans. Black women with normal body mass index (BMI) (18.5-24.9 kg/m(2)) had increased odds of preterm delivery (odds ratio [OR] = 1.33, 95% CI: 1.15, 1.56, adjusted for deprivation and BMI) compared with white Europeans. The OR of preterm delivery was also increased in Asians compared with white Europeans (OR = 1.45, 95% CI: 1.33, 1.56, adjusted for single unsupported status and smoking). Meconium stained amniotic fluid, which is a sign of fetal maturity, was statistically significantly more frequent in preterm Black and Asian infants and term Black infants compared with white European infants. Conclusions This research suggests that normal gestational length is shorter in Black and Asian women compared with white European women and that fetal maturation may occur earlier.
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页码:107 / 113
页数:7
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