Exploring educational disparities in risk of preterm delivery: a comparative study of 12 European birth cohorts

Gry Poulsen; Katrine Strandberg-Larsen; Laust Hvas Mortensen; Henrique Barros; Sylvaine Cordier; Sofia Correia; Asta Danileviciute; Manon van Eijsden; Ana Fernández-Somoano; Ulrike Gehring; Regina Grazuleviciene; Esther Hafkamp-de Groen; Tine Brink Henriksen; Morten Søndergaard Jensen; Isabel Larrañaga; Per Magnus; Kate Pickett; Hein Raat; Lorenzo Richiardi; Florence Rouget; Franca Rusconi; Camilla Stoltenberg; Eleonora P Uphoff; Tanja G M Vrijkotte; Alet H Wijga; Martine Vrijheid; Merete Osler; Anne-Marie Nybo Andersen

doi:10.1111/ppe.12185

Exploring educational disparities in risk of preterm delivery: a comparative study of 12 European birth cohorts

Gry Poulsen, Katrine Strandberg-Larsen, Laust Hvas Mortensen, Henrique Barros, Sylvaine Cordier, Sofia Correia, Asta Danileviciute, Manon van Eijsden, Ana Fernández-Somoano, Ulrike Gehring, Regina Grazuleviciene, Esther Hafkamp-de Groen, Tine Brink Henriksen, Morten Søndergaard Jensen, Isabel Larrañaga, Per Magnus, Kate Pickett, Hein Raat, Lorenzo Richiardi, Florence RougetFranca Rusconi, Camilla Stoltenberg, Eleonora P Uphoff, Tanja G M Vrijkotte, Alet H Wijga, Martine Vrijheid, Merete Osler, Anne-Marie Nybo Andersen

30 Citationer (Scopus)

Abstract

BACKGROUND: An association between education and preterm delivery has been observed in populations across Europe, but differences in methodology limit comparability. We performed a direct cross-cohort comparison of educational disparities in preterm delivery based on individual-level birth cohort data.

METHODS: The study included data from 12 European cohorts from Denmark, England, France, Lithuania, the Netherlands, Norway, Italy, Portugal, and Spain. The cohorts included between 2434 and 99 655 pregnancies. The association between maternal education and preterm delivery (22-36 completed weeks of gestation) was reported as risk ratios, risk differences, and slope indexes of inequality with 95% confidence intervals (CIs).

RESULTS: Singleton preterm live delivery proportion varied between 3.7% and 7.5%. There were large variations between the cohorts in the distribution of education and maternal characteristics. Nevertheless, there were similar educational differences in risk of preterm delivery in 8 of the 12 cohorts with slope index of inequality varying between 2.2 [95% CI 1.1, 3.3] and 4.0 [95% CI 1.4, 6.6] excess preterm deliveries per 100 singleton deliveries among the educationally most disadvantaged, and risk ratio between the lowest and highest education category varying from 1.4 [95% CI 1.1, 1.8] to 1.9 [95% CI 1.2, 3.1]. No associations were found in the last four cohorts.

CONCLUSIONS: Educational disparities in preterm delivery were found all over Europe. Despite differences in the distributions of education and preterm delivery, the results were remarkably similar across the cohorts. For those few cohorts that did not follow the pattern, study and country characteristics did not explain the differences.

Originalsprog	Engelsk
Tidsskrift	Paediatric and Perinatal Epidemiology (Online)
Vol/bind	29
Udgave nummer	3
Sider (fra-til)	172-183
Antal sider	12
ISSN	1365-3016
DOI	https://doi.org/10.1111/ppe.12185
Status	Udgivet - maj 2015

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10.1111/ppe.12185

https://onlinelibrary.wiley.com/doi/pdfdirect/10.1111/ppe.12185

Citationsformater

Poulsen, G., Strandberg-Larsen, K., Mortensen, L. H., Barros, H., Cordier, S., Correia, S., Danileviciute, A., van Eijsden, M., Fernández-Somoano, A., Gehring, U., Grazuleviciene, R., Hafkamp-de Groen, E., Henriksen, T. B., Jensen, M. S., Larrañaga, I., Magnus, P., Pickett, K., Raat, H., Richiardi, L., ... Andersen, A-M. N. (2015). Exploring educational disparities in risk of preterm delivery: a comparative study of 12 European birth cohorts. Paediatric and Perinatal Epidemiology (Online), 29(3), 172-183. https://doi.org/10.1111/ppe.12185

Poulsen, G, Strandberg-Larsen, K , Mortensen, LH, Barros, H, Cordier, S, Correia, S, Danileviciute, A, van Eijsden, M, Fernández-Somoano, A, Gehring, U, Grazuleviciene, R, Hafkamp-de Groen, E, Henriksen, TB, Jensen, MS, Larrañaga, I, Magnus, P, Pickett, K, Raat, H, Richiardi, L, Rouget, F, Rusconi, F, Stoltenberg, C, Uphoff, EP, Vrijkotte, TGM, Wijga, AH, Vrijheid, M, Osler, M & Andersen, A-MN 2015, 'Exploring educational disparities in risk of preterm delivery: a comparative study of 12 European birth cohorts', Paediatric and Perinatal Epidemiology (Online), bind 29, nr. 3, s. 172-183. https://doi.org/10.1111/ppe.12185

@article{9b7fecd521a240a1a5f64861db131166,

title = "Exploring educational disparities in risk of preterm delivery: a comparative study of 12 European birth cohorts",

abstract = "BACKGROUND: An association between education and preterm delivery has been observed in populations across Europe, but differences in methodology limit comparability. We performed a direct cross-cohort comparison of educational disparities in preterm delivery based on individual-level birth cohort data.METHODS: The study included data from 12 European cohorts from Denmark, England, France, Lithuania, the Netherlands, Norway, Italy, Portugal, and Spain. The cohorts included between 2434 and 99 655 pregnancies. The association between maternal education and preterm delivery (22-36 completed weeks of gestation) was reported as risk ratios, risk differences, and slope indexes of inequality with 95% confidence intervals (CIs).RESULTS: Singleton preterm live delivery proportion varied between 3.7% and 7.5%. There were large variations between the cohorts in the distribution of education and maternal characteristics. Nevertheless, there were similar educational differences in risk of preterm delivery in 8 of the 12 cohorts with slope index of inequality varying between 2.2 [95% CI 1.1, 3.3] and 4.0 [95% CI 1.4, 6.6] excess preterm deliveries per 100 singleton deliveries among the educationally most disadvantaged, and risk ratio between the lowest and highest education category varying from 1.4 [95% CI 1.1, 1.8] to 1.9 [95% CI 1.2, 3.1]. No associations were found in the last four cohorts.CONCLUSIONS: Educational disparities in preterm delivery were found all over Europe. Despite differences in the distributions of education and preterm delivery, the results were remarkably similar across the cohorts. For those few cohorts that did not follow the pattern, study and country characteristics did not explain the differences.",

author = "Gry Poulsen and Katrine Strandberg-Larsen and Mortensen, {Laust Hvas} and Henrique Barros and Sylvaine Cordier and Sofia Correia and Asta Danileviciute and {van Eijsden}, Manon and Ana Fern{\'a}ndez-Somoano and Ulrike Gehring and Regina Grazuleviciene and {Hafkamp-de Groen}, Esther and Henriksen, {Tine Brink} and Jensen, {Morten S{\o}ndergaard} and Isabel Larra{\~n}aga and Per Magnus and Kate Pickett and Hein Raat and Lorenzo Richiardi and Florence Rouget and Franca Rusconi and Camilla Stoltenberg and Uphoff, {Eleonora P} and Vrijkotte, {Tanja G M} and Wijga, {Alet H} and Martine Vrijheid and Merete Osler and Andersen, {Anne-Marie Nybo}",

note = "{\textcopyright} 2015 John Wiley & Sons Ltd.",

year = "2015",

month = may,

doi = "10.1111/ppe.12185",

language = "English",

volume = "29",

pages = "172--183",

journal = "Paediatric and Perinatal Epidemiology (Online)",

issn = "1365-3016",

publisher = "Wiley-Blackwell",

number = "3",

}

TY - JOUR

T1 - Exploring educational disparities in risk of preterm delivery

T2 - a comparative study of 12 European birth cohorts

AU - Poulsen, Gry

AU - Strandberg-Larsen, Katrine

AU - Mortensen, Laust Hvas

AU - Barros, Henrique

AU - Cordier, Sylvaine

AU - Correia, Sofia

AU - Danileviciute, Asta

AU - van Eijsden, Manon

AU - Fernández-Somoano, Ana

AU - Gehring, Ulrike

AU - Grazuleviciene, Regina

AU - Hafkamp-de Groen, Esther

AU - Henriksen, Tine Brink

AU - Jensen, Morten Søndergaard

AU - Larrañaga, Isabel

AU - Magnus, Per

AU - Pickett, Kate

AU - Raat, Hein

AU - Richiardi, Lorenzo

AU - Rouget, Florence

AU - Rusconi, Franca

AU - Stoltenberg, Camilla

AU - Uphoff, Eleonora P

AU - Vrijkotte, Tanja G M

AU - Wijga, Alet H

AU - Vrijheid, Martine

AU - Osler, Merete

AU - Andersen, Anne-Marie Nybo

PY - 2015/5

Y1 - 2015/5

N2 - BACKGROUND: An association between education and preterm delivery has been observed in populations across Europe, but differences in methodology limit comparability. We performed a direct cross-cohort comparison of educational disparities in preterm delivery based on individual-level birth cohort data.METHODS: The study included data from 12 European cohorts from Denmark, England, France, Lithuania, the Netherlands, Norway, Italy, Portugal, and Spain. The cohorts included between 2434 and 99 655 pregnancies. The association between maternal education and preterm delivery (22-36 completed weeks of gestation) was reported as risk ratios, risk differences, and slope indexes of inequality with 95% confidence intervals (CIs).RESULTS: Singleton preterm live delivery proportion varied between 3.7% and 7.5%. There were large variations between the cohorts in the distribution of education and maternal characteristics. Nevertheless, there were similar educational differences in risk of preterm delivery in 8 of the 12 cohorts with slope index of inequality varying between 2.2 [95% CI 1.1, 3.3] and 4.0 [95% CI 1.4, 6.6] excess preterm deliveries per 100 singleton deliveries among the educationally most disadvantaged, and risk ratio between the lowest and highest education category varying from 1.4 [95% CI 1.1, 1.8] to 1.9 [95% CI 1.2, 3.1]. No associations were found in the last four cohorts.CONCLUSIONS: Educational disparities in preterm delivery were found all over Europe. Despite differences in the distributions of education and preterm delivery, the results were remarkably similar across the cohorts. For those few cohorts that did not follow the pattern, study and country characteristics did not explain the differences.

AB - BACKGROUND: An association between education and preterm delivery has been observed in populations across Europe, but differences in methodology limit comparability. We performed a direct cross-cohort comparison of educational disparities in preterm delivery based on individual-level birth cohort data.METHODS: The study included data from 12 European cohorts from Denmark, England, France, Lithuania, the Netherlands, Norway, Italy, Portugal, and Spain. The cohorts included between 2434 and 99 655 pregnancies. The association between maternal education and preterm delivery (22-36 completed weeks of gestation) was reported as risk ratios, risk differences, and slope indexes of inequality with 95% confidence intervals (CIs).RESULTS: Singleton preterm live delivery proportion varied between 3.7% and 7.5%. There were large variations between the cohorts in the distribution of education and maternal characteristics. Nevertheless, there were similar educational differences in risk of preterm delivery in 8 of the 12 cohorts with slope index of inequality varying between 2.2 [95% CI 1.1, 3.3] and 4.0 [95% CI 1.4, 6.6] excess preterm deliveries per 100 singleton deliveries among the educationally most disadvantaged, and risk ratio between the lowest and highest education category varying from 1.4 [95% CI 1.1, 1.8] to 1.9 [95% CI 1.2, 3.1]. No associations were found in the last four cohorts.CONCLUSIONS: Educational disparities in preterm delivery were found all over Europe. Despite differences in the distributions of education and preterm delivery, the results were remarkably similar across the cohorts. For those few cohorts that did not follow the pattern, study and country characteristics did not explain the differences.

U2 - 10.1111/ppe.12185

DO - 10.1111/ppe.12185

M3 - Journal article

C2 - 25808200

SN - 1365-3016

VL - 29

SP - 172

EP - 183

JO - Paediatric and Perinatal Epidemiology (Online)

JF - Paediatric and Perinatal Epidemiology (Online)

IS - 3

ER -

Exploring educational disparities in risk of preterm delivery: a comparative study of 12 European birth cohorts

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