Increasing educational inequality in preterm birth in Quebec, Canada, 1981-2006

Journal of Epidemiology and Community Health
Nathalie AugerSam Harper

Abstract

Few studies have evaluated the relationship between preterm birth (PTB) and maternal education over time. We sought to determine whether educational inequalities in PTB have increased in Québec, Canada. The authors analysed 2,124,909 singleton live births from 1981 to 2006, and computed the Relative Index of Inequality (RII) and Slope Index of Inequality (SII) with 95% CIs for the relationship between maternal education and extreme, very or moderate PTB (≤27, 28-31, and 32-36 completed weeks of gestation, respectively) for five periods (1981-1985, 1986-1990, 1991-1995, 1996-2000, 2001-2006), adjusting for maternal age, marital status, birthplace, language spoken at home, parity and infant sex. Average rates of extreme and moderate PTB increased over time but decreased for very PTB. A statistically significant increase in the RII over time was present for extreme and moderate PTB. The adjusted RII for extreme PTB increased from 1.58 (95% CI 1.24 to 2.01) in 1981-1985 to 3.11 (95% CI 2.54 to 3.81) in 2001-2006. For moderate PTB, the corresponding RIIs were 1.53 (95% CI 1.44 to 1.61) and 1.91 (95% CI 1.81 to 2.01). Absolute differences in the PTB proportion between the least and most educated mothers increased from 1981 to 2006 fo...Continue Reading

Citations

Mar 23, 2011·Journal of Immigrant and Minority Health·Nathalie AugerMark Daniel
Jun 30, 2012·American Journal of Public Health·Abdulrahman M El-Sayed, Sandro Galea
Mar 30, 2012·International Journal of Circumpolar Health·Nathalie AugerZhong-Cheng Luo
Mar 29, 2014·European Journal of Obstetrics, Gynecology, and Reproductive Biology·Nathalie AugerErnest Lo
Oct 10, 2012·Proceedings of the National Academy of Sciences of the United States of America·Nancy AdlerMatthew S Pantell
May 31, 2012·International Journal of Public Health·Nathalie AugerSam Harper
Jan 31, 2012·Annals of Epidemiology·Nathalie AugerRobert W Platt
May 10, 2011·Annals of Epidemiology·Nathalie AugerSam Harper
May 20, 2015·Journal of Epidemiology and Community Health·Britt McKinnonJay S Kaufman
Apr 8, 2015·Acta Obstetricia Et Gynecologica Scandinavica·John W Snelgrove, Kellie E Murphy
Mar 27, 2015·Paediatric and Perinatal Epidemiology·Gry PoulsenAnne-Marie Nybo Andersen
Jun 16, 2012·Social Science & Medicine·Nathalie AugerMark Daniel
Aug 22, 2015·BMC Pregnancy and Childbirth·Zoua M VangMakoto Nagano
Oct 23, 2016·BJOG : an International Journal of Obstetrics and Gynaecology·U WaldenströmM Norman
Jan 30, 2014·Maternal and Child Health Journal·Nicolas L GilbertMichael S Kramer
Apr 11, 2015·Journal of Epidemiology and Community Health·Leigh Tooth, Gita D Mishra
Jul 5, 2013·Canadian Journal of Public Health = Revue Canadienne De Santé Publique·Nicolas L GilbertMichael S Kramer
Jan 24, 2019·International Journal of Environmental Research and Public Health·Anna Merklinger-Gruchala, Maria Kapiszewska
Apr 14, 2017·Journal of Gynecology Obstetrics and Human Reproduction·C PrunetB Blondel

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