Neighbourhood Socio-economic Status and Spontaneous Premature Birth in Alberta
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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.
Nicholls-Dempsey L, Badeghiesh A, Baghlaf H, Dahan M Eur J Obstet Gynecol Reprod Biol X. 2023; 20:100248.
PMID: 37876770 PMC: 10590715. DOI: 10.1016/j.eurox.2023.100248.
Granes L, Tora-Rocamora I, Palacio M, de la Torre L, Llupia A PLoS One. 2023; 18(4):e0283901.
PMID: 37018293 PMC: 10075484. DOI: 10.1371/journal.pone.0283901.
Azra K, Nielsen A, Kim C, Dusing G, Chum A PLoS One. 2023; 18(3):e0282910.
PMID: 36989270 PMC: 10058080. DOI: 10.1371/journal.pone.0282910.
Bardou M, Crepon B, Bertaux A, Godard-Marceaux A, Eckman-Lacroix A, Thellier E BMJ Open. 2017; 7(10):e017321.
PMID: 29084796 PMC: 5665235. DOI: 10.1136/bmjopen-2017-017321.
Lelong A, Jiroff L, Blanquet M, Mourgues C, Leymarie M, Gerbaud L J Prev Med Hyg. 2016; 56(2):E95-E101.
PMID: 26789995 PMC: 4718350.