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Preterm preeclampsia in relation to country of birth.


ABSTRACT:

Objective

To examine the association between maternal country of birth and the risk of preeclampsia+preterm birth (PTB).

Study design

We completed a population-based study in the entire province of Ontario, where there is universal access to obstetrical care. We included 881?700 singleton livebirths among Canadian-born mothers and 305?547 births among immigrant mothers. Adjusted risk ratios (aRRs) were adjusted for maternal age, parity and income quintile.

Results

Compared with a rate of preeclampsia+PTB of 4.0 per 1000 among Canadian-born mothers, the aRR of preeclampsia+PTB at 24 to 36 weeks was significantly higher for immigrant women from Nigeria (1.79, 95% confidence interval (CI) 1.12 to 2.84), the Philippines (1.54, 95% CI 1.30 to 1.86), Colombia (1.68, 95% CI 1.04 to 2.73), Jamaica (2.06, 95% CI 1.66 to 2.57) and Ghana (2.12, 95% CI 1.40 to 3.21). The aRRs generally followed a similar pattern for secondary outcomes. Specifically, women from Ghana were at highest risk of preeclampsia+very PTB (4.55, 95% CI 2.57 to 8.06), and women from Jamaica at the highest risk of preeclampsia+indicated PTB (1.89, 95% CI 1.43 to 2.50).

Conclusion

The risk of preeclampsia+PTB is highest among women from a select number of countries. This information can enhance initiatives aimed at reducing the risk of PTB related to preeclampsia.

SUBMITTER: Ray JG 

PROVIDER: S-EPMC5007604 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature

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Publications

Preterm preeclampsia in relation to country of birth.

Ray J G JG   Wanigaratne S S   Park A L AL   Bartsch E E   Dzakpasu S S   Urquia M L ML  

Journal of perinatology : official journal of the California Perinatal Association 20160505 9


<h4>Objective</h4>To examine the association between maternal country of birth and the risk of preeclampsia+preterm birth (PTB).<h4>Study design</h4>We completed a population-based study in the entire province of Ontario, where there is universal access to obstetrical care. We included 881 700 singleton livebirths among Canadian-born mothers and 305 547 births among immigrant mothers. Adjusted risk ratios (aRRs) were adjusted for maternal age, parity and income quintile.<h4>Results</h4>Compared  ...[more]

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