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Traffic pollution at the home address and pregnancy outcomes in Stockholm, Sweden.

Olsson D, Mogren I, Eneroth K, Forsberg B - BMJ Open (2015)

Bottom Line: For the past two decades, several studies have reported associations between elevated levels of ambient air pollution and adverse pregnancy outcomes, although with varying conclusions.To examine possible associations between the traffic pollution situation at the home address, for women who did not change address during pregnancy, and three types of pregnancy outcomes: spontaneous preterm delivery, children born small for gestational age (SGA) and pregnancy-induced hypertensive disorders.The 2nd to 4th quartiles of NOx were all associated with an increased risk of SGA, but there was no difference in the risk estimate among the higher quartiles.

View Article: PubMed Central - PubMed

Affiliation: Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, Umeå, Sweden.

No MeSH data available.


Related in: MedlinePlus

ORs for small for gestational age (SGA) by quartiles of the pregnancy average nitrogen oxide (NOx) levels at the home address. aIncludes a random effect for municipality. bAdjusted for maternal asthma, maternal level of education, maternal area of origin, maternal age, first trimester temperature, first trimester ozone, day and year of conception, and parity. cAdditionally adjusted for maternal smoking, body mass index and family situation.
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BMJOPEN2014007034F2: ORs for small for gestational age (SGA) by quartiles of the pregnancy average nitrogen oxide (NOx) levels at the home address. aIncludes a random effect for municipality. bAdjusted for maternal asthma, maternal level of education, maternal area of origin, maternal age, first trimester temperature, first trimester ozone, day and year of conception, and parity. cAdditionally adjusted for maternal smoking, body mass index and family situation.

Mentions: A non-linear relation between air pollution exposure and the outcome was indicated only for NOx and SGA. In the unadjusted model, there was an increased odds of SGA births associated with the second quartile compared to the first quartile, while the association attenuated towards the for the third and fourth quartiles (figure 2). In the two adjusted models, there were fairly constant significantly increased ORs for SGA for the second, third and fourth quartiles compared to the first quartile.


Traffic pollution at the home address and pregnancy outcomes in Stockholm, Sweden.

Olsson D, Mogren I, Eneroth K, Forsberg B - BMJ Open (2015)

ORs for small for gestational age (SGA) by quartiles of the pregnancy average nitrogen oxide (NOx) levels at the home address. aIncludes a random effect for municipality. bAdjusted for maternal asthma, maternal level of education, maternal area of origin, maternal age, first trimester temperature, first trimester ozone, day and year of conception, and parity. cAdditionally adjusted for maternal smoking, body mass index and family situation.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4538290&req=5

BMJOPEN2014007034F2: ORs for small for gestational age (SGA) by quartiles of the pregnancy average nitrogen oxide (NOx) levels at the home address. aIncludes a random effect for municipality. bAdjusted for maternal asthma, maternal level of education, maternal area of origin, maternal age, first trimester temperature, first trimester ozone, day and year of conception, and parity. cAdditionally adjusted for maternal smoking, body mass index and family situation.
Mentions: A non-linear relation between air pollution exposure and the outcome was indicated only for NOx and SGA. In the unadjusted model, there was an increased odds of SGA births associated with the second quartile compared to the first quartile, while the association attenuated towards the for the third and fourth quartiles (figure 2). In the two adjusted models, there were fairly constant significantly increased ORs for SGA for the second, third and fourth quartiles compared to the first quartile.

Bottom Line: For the past two decades, several studies have reported associations between elevated levels of ambient air pollution and adverse pregnancy outcomes, although with varying conclusions.To examine possible associations between the traffic pollution situation at the home address, for women who did not change address during pregnancy, and three types of pregnancy outcomes: spontaneous preterm delivery, children born small for gestational age (SGA) and pregnancy-induced hypertensive disorders.The 2nd to 4th quartiles of NOx were all associated with an increased risk of SGA, but there was no difference in the risk estimate among the higher quartiles.

View Article: PubMed Central - PubMed

Affiliation: Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine, Umeå University, Umeå, Sweden.

No MeSH data available.


Related in: MedlinePlus