Evidence map›Paper›PMID 30992290›Full record

ArticleBMJ open2019

Diabetes in pregnancy in associations with perinatal and postneonatal mortality in First Nations and non-Indigenous populations in Quebec, Canada: population-based linked birth cohort study.

Lu Chen, Wen-Juan Wang, Nathalie Auger, Lin Xiao, Jill Torrie, Nancy Gros-Louis McHugh, Zhong-Cheng Luo

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 2 pooled it
3.6field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 2 syntheses or guidelines pooled it, 29 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Review
  5. Article
  6. Article
  7. Diabetes during pregnancy among Métis people in Alberta: a retrospective cohort study.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2023
    Article
  8. Article
  9. Canada First Nations Strengths in Community-Based Primary Healthcare.International journal of environmental research and public health · 2022
    Article
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  14. Observational
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 6 institutions in 2 countries.

Lu Chen *Obstetrics and Gynecology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, and Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.
Wen-Juan Wang *Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Shanghai Jiaotong University School of Medicine, Xinhua Hospital, Shanghai, China.
Nathalie AugerEpidemiology, University of Montreal Hospital Research Centre, Montreal, Quebec, Canada.
Lin XiaoObstetrics and Gynecology, Sainte-Justine Hospital Research Center, Montreal, Quebec, Canada.
Jill TorriePublic Health Department, Cree Board of Health and Social Services of James Bay, Mistissini, Quebec, Canada.
Nancy Gros-Louis McHughResearch Sector, First Nations of Quebec and Labrador Health and Social Service Commission, Wendake, Quebec, Canada.
Zhong-Cheng LuoObstetrics and Gynecology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, and Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ontario, Canada.ORCID 0000-0002-1794-1312
Mount Sinai Hospital · CACentre Hospitalier Universitaire Sainte-Justine · CACree Board of Health and Social Services of James Bay · CAFirst Nations of Quebec and Labrador Health and Social Services Commission · CALunenfeld-Tanenbaum Research Institute · CAUniversité de Montréal · CA

Funding

CIHR 106521CIHR 155955
6 · The paper itself

Abstract

objectiveBoth pregestational and gestational diabetes mellitus (PGDM, GDM) occur more frequently in First Nations (North American Indians) pregnant women than their non-Indigenous counterparts in Canada. We assessed whether the impacts of PGDM and GDM on perinatal and postneonatal mortality may differ in First Nations versus non-Indigenous populations.

designA population-based linked birth cohort study. SETTING AND

participants17 090 First Nations and 217 760 non-Indigenous singleton births in 1996-2010, Quebec, Canada.

main outcome measuresRelative risks (RR) of perinatal and postneonatal death. Perinatal deaths included stillbirths and neonatal (0-27 days of postnatal life) deaths; postneonatal deaths included infant deaths during 28-364 days of life.

resultsPGDM and GDM occurred much more frequently in First Nations (3.9% and 10.7%, respectively) versus non-Indigenous (1.1% and 4.8%, respectively) pregnant women. PGDM was associated with an increased risk of perinatal death to a much greater extent in First Nations (RR=5.08[95% CI 2.99 to 8.62], p<0.001; absolute risk (AR)=21.6 [8.6-34.6] per 1000) than in non-Indigenous populations (RR=1.76[1.17, 2.66], p=0.003; AR=4.2[0.2, 8.1] per 1000). PGDM was associated with an increased risk of postneonatal death in non-Indigenous (RR=3.46[1.71, 6.99], p<0.001; AR=2.4[0.1, 4.8] per 1000) but not First Nations (RR=1.16[0.28, 4.77], p=0.35) infants. Adjusting for maternal and pregnancy characteristics, the associations were similar. GDM was not associated with perinatal or postneonatal death in both groups.

conclusionsThe study is the first to reveal that PGDM may increase the risk of perinatal death to a much greater extent in First Nations versus non-Indigenous populations, but may substantially increase the risk of postneonatal death in non-Indigenous infants only. The underlying causes are unclear and deserve further studies. We speculate that population differences in the quality of glycaemic control in diabetic pregnancies and/or genetic vulnerability to hyperglycaemia's fetal toxicity may be contributing factors.

Indexed as

Indians, North AmericanWhite PeopleAdultCross-Cultural ComparisonDiabetes, GestationalFemaleHealth SurveysHumansInfantInfant MortalityInfant, NewbornPerinatal MortalityPregnancyPregnancy in DiabeticsPregnancy OutcomeQuebecfirst Nationsindigenous populationperinatal mortalitypostneonatal mortalitypre-gestational diabetes

Identifiers

PMID30992290
PMCPMC6500205
OpenAlexW2940264027

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.