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Canadian Journal of Public Health

, Volume 105, Issue 5, pp e383–e388 | Cite as

Neighbourhood socio-economic status and spontaneous premature birth in Alberta

  • Stephen WoodEmail author
  • Debbie McNeil
  • Wendy Yee
  • Jodie Siever
  • Sarah Rose
Quantitative Research
  • 1 Downloads

Abstract

OBJECTIVE: To evaluate a possible association between neighbourhood socio-economic status and spontaneous premature birth in Alberta births.

METHODS: The study design was a retrospective cohort of all births in Alberta for the years 2001 and 2006. The primary outcome was spontaneous preterm birth at <37 weeks gestation. Neighbourhood socio-economic status was measured by the Pampalon Material Deprivation Index for each Statistics Canada census dissemination area. Births were linked to dissemination area using maternal postal codes.

RESULTS: The analysis comprised 73,585 births, in which the rate of spontaneous preterm delivery at <37 weeks was 5.3%. The rates of spontaneous preterm delivery for each neighbourhood socio-economic category ranged from 4.9% (95% CI 4.5%–5.2%) in the highest category to 6.3% (95% CI 6.0%–6.7%) in the lowest (p<0.001). After controlling for smoking, parity, maternal age and year, we found that women living in the highest socio-economic status neighbourhoods had an adjusted spontaneous preterm birth rate of 5.1% (95% CI 4.7%–5.5%) compared to 6.0% (95% CI 5.6%–6.4%) for women living in the lowest (p=0.003).

CONCLUSION: This study documented a modest increase in the risk of spontaneous preterm birth with low socio-economic status. The possibility of confounding bias cannot be ruled out.

Keywords

Social class obstetric labour premature 

Résumé

OBJECTIF : Évaluer une association possible entre le statut socioéconomique du quartier et les accouchements prématurés spontanés parmi les naissances en Alberta.

MÉTHODE : Le protocole d’étude comportait une cohorte rétrospective de toutes les naissances survenues en Alberta en 2001 et en 2006. Le principal résultat était la prématurité spontanée à <37 semaines de gestation. Le statut socioéconomique du quartier a été mesuré selon l’indice de défavorisation matérielle de Pampalon pour chaque aire de diffusion du recensement de Statistique Canada. Les naissances ont été liées aux aires de diffusion à l’aide des codes postaux maternels.

RÉSULTATS : L’analyse a compris 73 585 naissances, parmi lesquelles le taux d’accouchements prématurés spontanés à <37 semaines était de 5,3%. Les taux d’accouchements prématurés spontanés pour chaque catégorie de statut socioéconomique du quartier variaient de 4,9% (IC de 95%: 4,5 %–5,2 %) dans la catégorie la plus élevée à 6,3% (IC de 95%: 6,0%–6,7 %) dans la catégorie la moins élevée (p<0,001). Compte tenu du tabagisme, de la parité, de l’âge maternel et de l’année, nous avons constaté que les femmes vivant dans les quartiers au statut socioéconomique le plus élevé avaient un taux ajusté de prématurité spontanée de 5,1% (IC de 95%: 4,7%–5,5 %), contre 6,0% (IC de 95%: 5,6%–6,4%) pour les femmes vivant dans les quartiers au statut économique le plus faible (p=0,003).

CONCLUSION : Cette étude fait état d’une légère augmentation du risque de prématurité spontanée liée au faible statut socioéconomique. La possibilité d’un biais dû aux facteurs de confusion ne peut être écartée.

Motsclés

classe sociale travail obstétrical prématuré 

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Copyright information

© The Canadian Public Health Association 2014

Authors and Affiliations

  • Stephen Wood
    • 1
    Email author
  • Debbie McNeil
    • 2
  • Wendy Yee
    • 3
  • Jodie Siever
    • 2
  • Sarah Rose
  1. 1.Department of Obstetrics and Gynecology and Community Health SciencesUniversity of CalgaryCalgaryCanada
  2. 2.Surveillance and Infrastructure, Population Public and Aboriginal HealthAlberta Health ServicesCalgaryCanada
  3. 3.Department of PediatricsUniversity of CalgaryCalgaryCanada

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