Evidence map›Paper›PMID 36918247›Full record

ArticleBMJ open2023

Seasonal variation in gestational diabetes mellitus among women in Norway: a national population-based study.

Astrid Melteig Stalheim, Marjolein Memelink Iversen, Anne Karen Jenum, Line Sletner, Signe N Stafne, Elisabeth Qvigstad, Linda Sagedal, Roy Miodini Nilsen, Vigdis Aasheim, Ragnhild B Strandberg

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Article in BMJ open, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

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5citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

Who cites it

5 citing papers in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

10 authors.

Astrid Melteig StalheimDepartment of Health and Caring Sciences, Western Norway University of Applied Sciences, Bergen, Norway.
Marjolein Memelink IversenDepartment of Health and Caring Sciences, Western Norway University of Applied Sciences, Bergen, Norway.ORCID 0000-0001-9954-171X
Anne Karen JenumDepartment of General Practice, General Practice Unit (AFE), Insitute of Health and Society, Faculty of Medicine, University of Oslo, Oslo, Norway.
Line SletnerDepartment for Paediatric and Adolescent Medicine, Akershus University Hospital, Oslo, Norway.
Signe N StafneDepartment of Public Health and Nursing, Norwegian University of Science and Technology (NTNU), Trondheim, Norway.
Elisabeth QvigstadInstitute of Clinical Medicine, University of Oslo, Oslo, Norway.
Linda SagedalDepartment of Obstetrics and Gynecology, Sørlandet Hospital, Kristiansand, Norway.
Roy Miodini NilsenDepartment of Health and Functioning, Western Norway University of Applied Sciences, Bergen, Norway.ORCID 0000-0002-0228-1550
Vigdis AasheimDepartment of Health and Caring Sciences, Western Norway University of Applied Sciences, Bergen, Norway.
Ragnhild B StrandbergDepartment of Health and Caring Sciences, Western Norway University of Applied Sciences, Bergen, Norway Ragnhild.Bjarkoy.Strandberg@hvl.no.ORCID 0000-0003-0256-438X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesPrevious research on seasonal variation in the incidence of gestational diabetes mellitus (GDM) has shown inconclusive results. Furthermore, little is known about whether a seasonal variation in GDM might be associated with the maternal country of birth. We examined whether there was seasonal variation in GDM incidence by the maternal country background.

designNational population-based registry study. SETTING AND

participantsWe used national population-based data from the Medical Birth Registry of Norway (MBRN), n=1 443 857 (1990-2016) and data from four merged community-based studies (4GDM) with universal screening for GDM, n=2 978 (2002-2013). OUTCOME MEASURES: The association between season of pregnancy onset with incidence of GDM was examined separately in both datasets using logistic regression analyses, stratified by the mother's country background using two broad geographical categories (MBRN: Norwegian and immigrant; 4GDM: European and African/Asian ethnicity). Winter season was used as reference category.

resultsThe incidence of GDM in MBRN was highest when the pregnancy started during the winter (Norwegian-born: 1.21%; immigrants: 3.32%) and lowest when pregnancy started during the summer for both Norwegian and immigrant women (Norwegian-born: 1.03% (OR 0.85, 95% CI 0.81 to 0.98); immigrants: 2.99% (OR 0.90, 95% CI 0.84 to 0.96)). The 4GDM data showed that women with European ancestry had the highest incidence of GDM when pregnancy started during autumn (10.7%, OR 1.01, 95% CI 0.69 to 1.46) and winter (10.6%), while ethnic African and Asian women had the highest incidence when pregnancy onset was during the summer (15.3%, OR 1.17, 95% CI 0.54 to 2.53).

conclusionsBased on national population-based data, this study suggests that GDM incidence varies by season in both Norwegian-born and immigrant women. The 4GDM dataset did not show a clear seasonal variation in GDM incidence, possibly due to the relatively small sample. Causes for the seasonal variation in GDM should be explored further.

Indexed as

Diabetes, GestationalEthnicityFemaleHumansNorwayPregnancySeasonsdiabetes in pregnancyepidemiologypublic health

Identifiers

PMID36918247
PMCPMC10016255

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