| 1. |
- Mishra, A, et al.
(författare)
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Diminishing benefits of urban living for children and adolescents' growth and development
- 2023
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Ingår i: Nature. - : Springer Science and Business Media LLC. - 1476-4687 .- 0028-0836. ; 615:7954, s. 874-883
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Tidskriftsartikel (refereegranskat)abstract
- Optimal growth and development in childhood and adolescence is crucial for lifelong health and well-being1–6. Here we used data from 2,325 population-based studies, with measurements of height and weight from 71 million participants, to report the height and body-mass index (BMI) of children and adolescents aged 5–19 years on the basis of rural and urban place of residence in 200 countries and territories from 1990 to 2020. In 1990, children and adolescents residing in cities were taller than their rural counterparts in all but a few high-income countries. By 2020, the urban height advantage became smaller in most countries, and in many high-income western countries it reversed into a small urban-based disadvantage. The exception was for boys in most countries in sub-Saharan Africa and in some countries in Oceania, south Asia and the region of central Asia, Middle East and north Africa. In these countries, successive cohorts of boys from rural places either did not gain height or possibly became shorter, and hence fell further behind their urban peers. The difference between the age-standardized mean BMI of children in urban and rural areas was <1.1 kg m–2 in the vast majority of countries. Within this small range, BMI increased slightly more in cities than in rural areas, except in south Asia, sub-Saharan Africa and some countries in central and eastern Europe. Our results show that in much of the world, the growth and developmental advantages of living in cities have diminished in the twenty-first century, whereas in much of sub-Saharan Africa they have amplified.
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| 7. |
- Lien, Sigbjorn, et al.
(författare)
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The Atlantic salmon genome provides insights into rediploidization
- 2016
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Ingår i: Nature. - : Nature Publishing Group. - 0028-0836 .- 1476-4687. ; 533:7602, s. 200-205
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Tidskriftsartikel (refereegranskat)abstract
- The whole-genome duplication 80 million years ago of the common ancestor of salmonids (salmonid-specific fourth vertebrate whole-genome duplication, Ss4R) provides unique opportunities to learn about the evolutionary fate of a duplicated vertebrate genome in 70 extant lineages. Here we present a high-quality genome assembly for Atlantic salmon (Salmo salar), and show that large genomic reorganizations, coinciding with bursts of transposon-mediated repeat expansions, were crucial for the post-Ss4R rediploidization process. Comparisons of duplicate gene expression patterns across a wide range of tissues with orthologous genes from a pre-Ss4R outgroup unexpectedly demonstrate far more instances of neofunctionalization than subfunctionalization. Surprisingly, we find that genes that were retained as duplicates after the teleost-specific whole-genome duplication 320 million years ago were not more likely to be retained after the Ss4R, and that the duplicate retention was not influenced to a great extent by the nature of the predicted protein interactions of the gene products. Finally, we demonstrate that the Atlantic salmon assembly can serve as a reference sequence for the study of other salmonids for a range of purposes.
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| 8. |
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| 9. |
- Hammar, Tora, 1984-, et al.
(författare)
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Nationally Shared Medication Lists-Describing Systems in the Nordic Countries
- 2023
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Ingår i: Caring is Sharing – Exploiting the Value in Data for Health and Innovation. - : IOS Press. - 9781643683881 ; , s. 207-211
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Konferensbidrag (refereegranskat)abstract
- This paper provides an overview of shared medication lists (SMLs) in four Nordic countries (Denmark, Finland, Norway and Sweden) with a focus on the type of information the list is based on. This is a structured comparison conducted in stages using an expert group, grey papers, unpublished materials, web pages, as well as scientific papers. Denmark and Finland have implemented their solutions for an SML and Norway and Sweden are working on the implementation of their solution. Denmark and Norway have or are aiming at a list based on medication orders, while Finland and Sweden have lists based on prescriptions.
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| 10. |
- Heggebo, L. C., et al.
(författare)
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Investigating survival, quality of life and cognition in PROton versus photon therapy for IDH-mutated diffuse grade 2 and 3 GLIOmas (PRO-GLIO): a randomised controlled trial in Norway and Sweden
- 2023
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Ingår i: Bmj Open. - : BMJ. - 2044-6055. ; 13:3
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Tidskriftsartikel (refereegranskat)abstract
- IntroductionThe use of proton therapy increases globally despite a lack of randomised controlled trials demonstrating its efficacy and safety. Proton therapy enables sparing of non-neoplastic tissue from radiation. This is principally beneficial and holds promise of reduced long-term side effects. However, the sparing of seemingly non-cancerous tissue is not necessarily positive for isocitrate dehydrogenase (IDH)-mutated diffuse gliomas grade 2-3, which have a diffuse growth pattern. With their relatively good prognosis, yet incurable nature, therapy needs to be delicately balanced to achieve a maximal survival benefit combined with an optimised quality of life.Methods and analysisPRO-GLIO (PROton versus photon therapy in IDH-mutated diffuse grade 2 and 3 GLIOmas) is an open-label, multicentre, randomised phase III non-inferiority study. 224 patients aged 18-65 years with IDH-mutated diffuse gliomas grade 2-3 from Norway and Sweden will be randomised 1:1 to radiotherapy delivered with protons (experimental arm) or photons (standard arm). First intervention-free survival at 2 years is the primary endpoint. Key secondary endpoints are fatigue and cognitive impairment, both at 2 years. Additional secondary outcomes include several survival measures, health-related quality of life parameters and health economy endpoints.Ethics and disseminationTo implement proton therapy as part of standard of care for patients with IDH-mutated diffuse gliomas grade 2-3, it should be deemed safe. With its randomised controlled design testing proton versus photon therapy, PRO-GLIO will provide important information for this patient population concerning safety, cognition, fatigue and other quality of life parameters. As proton therapy is considerably more costly than its photon counterpart, cost-effectiveness will also be evaluated. PRO-GLIO is approved by ethical committees in Norway (Regional Committee for Medical & Health Research Ethics) and Sweden (The Swedish Ethical Review Authority) and patient inclusion has commenced. Trial results will be published in international peer-reviewed journals, relevant conferences, national and international meetings and expert forums.Trial registration numberClinicalTrials.gov Registry (NCT05190172).
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| 12. |
- Bengtsson-Palme, Johan, 1985, et al.
(författare)
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Improved software detection and extraction of ITS1 and ITS2 from ribosomal ITS sequences of fungi and other eukaryotes for analysis of environmental sequencing data
- 2013
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Ingår i: Methods in Ecology and Evolution. - 2041-210X. ; 4:10, s. 914-919
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Tidskriftsartikel (refereegranskat)abstract
- The nuclear ribosomal internal transcribed spacer (ITS) region is the primary choice for molecular identification of fungi. Its two highly variable spacers (ITS1 and ITS2) are usually species specific, whereas the intercalary 5.8S gene is highly conserved. For sequence clustering and blast searches, it is often advantageous to rely on either one of the variable spacers but not the conserved 5.8S gene. To identify and extract ITS1 and ITS2 from large taxonomic and environmental data sets is, however, often difficult, and many ITS sequences are incorrectly delimited in the public sequence databases. We introduce ITSx, a Perl-based software tool to extract ITS1, 5.8S and ITS2 – as well as full-length ITS sequences – from both Sanger and high-throughput sequencing data sets. ITSx uses hidden Markov models computed from large alignments of a total of 20 groups of eukaryotes, including fungi, metazoans and plants, and the sequence extraction is based on the predicted positions of the ribosomal genes in the sequences. ITSx has a very high proportion of true-positive extractions and a low proportion of false-positive extractions. Additionally, process parallelization permits expedient analyses of very large data sets, such as a one million sequence amplicon pyrosequencing data set. ITSx is rich in features and written to be easily incorporated into automated sequence analysis pipelines. ITSx paves the way for more sensitive blast searches and sequence clustering operations for the ITS region in eukaryotes. The software also permits elimination of non-ITS sequences from any data set. This is particularly useful for amplicon-based next-generation sequencing data sets, where insidious non-target sequences are often found among the target sequences. Such non-target sequences are difficult to find by other means and would contribute noise to diversity estimates if left in the data set.
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| 14. |
- Coyne, Karin S, et al.
(författare)
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The prevalence of chronic constipation and faecal incontinence among men and women with symptoms of overactive bladder.
- 2011
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Ingår i: BJU International. - 1464-410X. ; 107:2, s. 254-261
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Tidskriftsartikel (refereegranskat)abstract
- Study Type - Symptom prevalence (non-consecutive cohort) Level of Evidence 4 OBJECTIVE To estimate the prevalence and overlap of overactive bladder (OAB), chronic constipation (CC) and faecal incontinence (FI) among a general population sample of adults in the USA. MATERIALS AND METHODS A cross-sectional internet-based survey of randomly selected panel members who were >/=40 years of age was conducted. Participants reported how often they experienced symptoms of OAB, CC and FI using Likert scales and modified Rome III criteria. Analyses were conducted to examine the overall prevalence of OAB, CC and FI in men and women separately and to characterize the extent of overlap between these conditions in participants with OAB vs those without OAB, and those participants with continent vs incontinent OAB. RESULTS The response rate for the survey was 62.2% and the final sample (N= 2000) included 927 men and 1073 women. The overall prevalence of OAB [defined as a response of >/='sometimes' to urinary urgency (i.e. 'sometimes' or more often) or 'yes' to urinary urgency incontinence (UUI)] was 26.1% in men and 41.2% in women. The overall prevalence of CC was significantly lower in men than in women (15.3 vs 26.3%), but both men and women with OAB were significantly more likely to report CC (22.3 and 35.9% vs 5.7 and 6.7%, respectively, P < 0.0001). The overall prevalence of FI reported 'rarely' or more was 16.7% of men and 21.9% of women. Men and women with OAB were significantly more likely to report FI than those without OAB. FI was also more common in participants with incontinent OAB than in those with continent OAB. Logistic regressions controlling for demographic factors and comorbid conditions suggest that OAB status is a very strong predictor of CC, FI and overlapping CC and FI (odds ratios, range 3.55-7.96). CONCLUSIONS Chronic constipation, FI and overlapping CC and faecal incontinence occur more frequently in patients with OAB and should be considered when evaluating and treating patients with OAB. These findings suggest a shared pathophysiology among these conditions. Additional study is needed to determine if successful treatment of one or more of these conditions is accompanied by commensurate improvement in symptoms referable to the other organ system.
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| 15. |
- Eriksen, Jon, et al.
(författare)
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The Blue Move for a Green Economy : Mulighetsstudie for hydrogen produksjon,industri, lagring og distribusjon
- 2017
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Blue Move har utarbeidet en rapport som belyser 12 ulike muligheter for produksjon, industri, lagring og distribusjon av hydrogen i ØKS-regionen.Rapporten belyser ogs viktigheten av lav elavgift for hydrogenproduksjon gjennom beregninger gjort for en nyetablert hydrogenstasjon.Interreg-prosjektet Blue Move arbeider for å fremme økt bruk av fornybar energi som erstatning for fossile drivstoff i ØKS-regionen. Mulighetsstudien som er samlet i denne rapporten ser nærmere på hvilke produksjonsmetoder som er mest relevante, relatert til tilgjengelig fornybar kraft. Videre beskriver den hvordan hydrogenet kan anvendes utover veitransport, og på hvilken måte det kan ha betydning for veitransport at det også kommer andre anvendelsesområder.
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| 16. |
- Khullar, Vik, et al.
(författare)
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The relationship between BMI and urinary incontinence subgroups: Results from EpiLUTS.
- 2014
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Ingår i: Neurourology and urodynamics. - : Wiley. - 1520-6777 .- 0733-2467. ; 33:4, s. 392-399
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Tidskriftsartikel (refereegranskat)abstract
- AIMS: To evaluate the relationship between body mass index (BMI) and urinary incontinence (UI) in adults ≥40 from the United States, United Kingdom, and Sweden. METHODS: This was a secondary analysis of EpiLUTS-a population-representative, cross-sectional, Internet-based survey conducted to assess the prevalence and HRQL impact of urinary symptoms. UI was evaluated by the LUTS Tool and categorized by subgroups: no UI, urgency urinary incontinence (UUI), stress urinary incontinence (SUI), mixed urinary incontinence (MUI) (UUI+SUI), UUI+other UI (OI), SUI+OI, and OI. Descriptive statistics were used. Logistic regressions examined the relationship of BMI to UI controlling for demographics and comorbid conditions. RESULTS: Response rate was 59%; 10,070 men and 13,178 women were included. Significant differences in BMI were found across UI subgroups. Obesity rates were highest among those with MUI (men and women), SUI+OI (women), UUI and UUI+OI (men). Logistic regressions of each UI subgroup showed that BMI≥30 (obese) was associated with UI in general and MUI (women) and UUI+OI (men). Among women, being obese increased the odds of having SUI and SUI+OI. Women with BMI 25-29.9 (overweight) were more likely to have UI in general and SUI with and without other incontinence (SUI, MUI, and SUI+OI). Being overweight was unrelated to any form of UI in men. CONCLUSIONS: Results were consistent with prior research showing BMI is associated with higher risk of UI. These findings indicate substantial differences in obesity by gender and UI subtype, suggesting different mechanisms for UI other than purely mechanical stress on the bladder. Neurourol. Urodynam. 9999:1-8, 2013. © 2013 Wiley Periodicals, Inc.
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| 19. |
- Nilsen, Roy M., et al.
(författare)
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Preconception Folic Acid Supplement Use in Immigrant Women (1999-2016)
- 2019
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Ingår i: Nutrients. - : MDPI. - 2072-6643. ; 11:10
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Tidskriftsartikel (refereegranskat)abstract
- This study examines how preconception folic acid supplement use varied in immigrant women compared with non-immigrant women. We analyzed national population-based data from Norway from 1999-2016, including 1,055,886 pregnancies, of which 202,234 and 7,965 were to 1st and 2nd generation immigrant women, respectively. Folic acid supplement use was examined in relation to generational immigrant category, maternal country of birth, and length of residence. Folic acid supplement use was lower overall in 1st and 2nd generation immigrant women (21% and 26%, respectively) compared with Norwegian-born women (29%). The lowest use among 1st generation immigrant women was seen in those from Eritrea, Ethiopia, Morocco, and Somalia (around 10%). The highest use was seen in immigrant women from the United States, the Netherlands, Denmark, and Iceland (>30%). Folic acid supplement use increased with increasing length of residence in immigrant women from most countries, but the overall prevalence was lower compared with Norwegian-born women even after 20 years of residence (adjusted odds ratio: 0.63; 95% confidence interval: 0.60-0.67). This study suggests that immigrant women from a number of countries are less likely to use preconception folic acid supplements than non-immigrant women, even many years after settlement.
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| 20. |
- Nilsen, Roy M., et al.
(författare)
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Preeclampsia by maternal reasons for immigration : a population-based study
- 2018
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Ingår i: BMC Pregnancy and Childbirth. - : Springer Science and Business Media LLC. - 1471-2393 .- 1471-2393. ; 18
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Tidskriftsartikel (refereegranskat)abstract
- Background:To investigate whether the occurrence of preeclampsia varied by maternal reasons for immigration.Methods:We included 1,287,270 singleton pregnancies (163,508 to immigrant women) in Norway during 1990-2013. Individual data were obtained through record linkage between the Medical Birth Registry of Norway and Statistics Norway. Analyses were performed for preeclampsia overall and in combination with preterm birth < 37 and < 34 weeks of gestation, referred to as preterm and very preterm preeclampsia. Odds ratios (ORs) with 95% confidence intervals (CIs) were estimated using logistic regression with robust standard errors, adjusted for relevant covariates, including maternal income and education.Results:Preeclampsia was reported in 3.5% of Norwegian women and 2.5% of immigrants. Compared with Norwegian women, the adjusted OR for preeclampsia was lowest in labour immigrants (adjusted OR 0.55 [95% CI 0.49-0.62]), followed by family immigrants (0.62 [0.59-0.65]), immigrant students (0.75 [0.65-0.86]), refugees (0.81 [0.75-0.88]), and immigrants from other Nordic countries (0.87 [0.80-0.94]). Compared with Norwegian women, labour immigrants also had lower adjusted odds of preterm and very preterm preeclampsia, whereas refugees had increased adjusted odds of preterm and very preterm preeclampsia (< 37 weeks: 1.18 [1.02-1.36], and < 34 weeks: 1.41 [1.15-1.72]).Conclusions:The occurrence of preeclampsia was lower overall in immigrants than in non-immigrants, but associations varied by maternal reasons for immigration. Maternity caregivers should pay increased attention to pregnant women with refugee backgrounds due to their excess odds of preterm preeclampsia.
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| 21. |
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| 22. |
- Strandberg, Ragnhild B., et al.
(författare)
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Gestational diabetes mellitus by maternal country of birth and length of residence in immigrant women in Norway
- 2021
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Ingår i: Diabetic Medicine. - : John Wiley & Sons. - 0742-3071 .- 1464-5491. ; 38:6
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Tidskriftsartikel (refereegranskat)abstract
- Aims: Immigrant women are at higher risk for gestational diabetes mellitus (GDM) than non-immigrant women. This study described the prevalence of GDM in immigrant women by maternal country of birth and examined the associations between immigrants' length of residence in Norway and GDM.Methods: This Norwegian national population-based study included 192,892 pregnancies to immigrant and 1,116,954 pregnancies to non-immigrant women giving birth during the period 1990-2013. Associations were reported as odds ratios (ORs) with 95% confidence intervals (CIs) using logistic regression models, adjusted for year of delivery, maternal age, marital status, health region, parity, education and income.Results: The prevalence and adjusted OR [CI] for GDM were substantially higher in immigrant women from Bangladesh (7.4%, OR 8.38 [5.41, 12.97]), Sri Lanka (6.3%, OR 7.60 [6.71, 8.60]), Pakistan (4.3%, OR 5.47 [4.90, 6.11]), India (4.4%, OR 5.18 [4.30, 6.24]) and Morocco (4.3%, OR 4.35 [3.63, 5.20]) compared to non-immigrants (prevalence 0.8%). Overall, GDM prevalence increased from 1.3% (OR 1.25 [1.14, 1.36]) to 3.3% (OR 2.55 [2.39, 2.71]) after 9 years of residence in immigrants compared to non-immigrant women. This association was particularly strong for women from South Asia.Conclusions: Gestational diabetes mellitus prevalence varied substantially between countries of maternal birth and was particularly high in immigrants from Asian countries. GDM appeared to increase with longer length of residence in certain immigrant groups.
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| 23. |
- Vik, Eline S., et al.
(författare)
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Country of first birth and neonatal outcomes in migrant and Norwegian-born parous women in Norway : a population-based study
- 2020
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Ingår i: BMC Health Services Research. - : BMC. - 1472-6963. ; 20:1
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Tidskriftsartikel (refereegranskat)abstract
- Background This study compares subsequent birth outcomes in migrant women who had already had a child before arriving in Norway with those in migrant women whose first birth occurred in Norway. The aim of this study was to investigate the associations between country of first birth and adverse neonatal outcomes (very preterm birth, moderately preterm birth, post-term birth, small for gestational age, large for gestational age, low Apgar score, stillbirth and neonatal death) in parous migrant and Norwegian-born women. Methods National population-based study including second and subsequent singleton births in Norway from 1990 to 2016. Data were retrieved from the Medical Birth Registry of Norway and Statistics Norway. Neonatal outcomes were compared between births to: 1) migrant women with a first birthbeforeimmigration to Norway (n = 30,062) versus those with a first birthafterimmigration (n = 66,006), and 2) Norwegian-born women with a first birthoutsideNorway (n = 6205) versus those with a first birthinNorway (n = 514,799). Associations were estimated as crude and adjusted odds ratios (aORs) with 95% confidence intervals (CIs) using multiple logistic regression. Results Migrant women with a first birthbeforeimmigrating to Norway had increased odds of adverse outcomes in subsequent births relative to those with a first birthafterimmigration: very preterm birth (22-31 gestational weeks; aOR = 1.27; CI 1.09-1.48), moderately preterm birth (32-36 gestational weeks; aOR = 1.10; CI 1.02-1.18), post-term birth (>= 42 gestational weeks; aOR = 1.19; CI 1.11-1.27), low Apgar score (< 7 at 5 min; aOR = 1.27; CI 1.16-1.39) and stillbirth (aOR = 1.29; CI 1.05-1.58). Similar results were found in the sample of births to Norwegian-born women. Conclusions The increased odds of adverse neonatal outcomes for migrantandNorwegian-born women who had their first births outside Norway should serve as a reminder of the importance of taking a careful obstetric history in these parous women to ensure appropriate care for their subsequent pregnancies and births in Norway.
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| 24. |
- Vik, Eline S., et al.
(författare)
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Paternal country of origin and adverse neonatal outcomes in births to foreign-born women in Norway : A population-based cohort study
- 2020
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Ingår i: PLoS Medicine. - : PUBLIC LIBRARY SCIENCE. - 1549-1277 .- 1549-1676. ; 17:11
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Tidskriftsartikel (refereegranskat)abstract
- Background: Migration is a risk factor for adverse neonatal outcomes. The various impacts of maternal origin have been reported previously. The aim of this study was to investigate associations between paternal origin and adverse neonatal outcomes in births to migrant and Norwegian-born women in Norway.Methods and findings: This nationwide population-based study included births to migrant (n = 240,759, mean age 29.6 years [+/- 5.3 SD]) and Norwegian-born women (n = 1,232,327, mean age 29.0 years [+/- 5.1 SD]) giving birth in Norway in 1990-2016. The main exposure was paternal origin (Norwegian-born, foreign-born, or unregistered). Neonatal outcomes were very preterm birth (22(+0)-31(+6) gestational weeks), moderately preterm birth (32(+0)-36(+6) gestational weeks), small for gestational age (SGA), low Apgar score (<7 at 5 minutes), and stillbirth. Associations were investigated in migrant and Norwegian-born women separately using multiple logistic regression and reported as adjusted odds ratios (aORs) with 95% confidence intervals (CIs), adjusted for year of birth, parity, maternal and paternal age, marital status, maternal education, and mother's gross income. In births to migrant women, a foreign-born father was associated with increased odds of very preterm birth (1.1% versus 0.9%, aOR 1.20; CI 1.08-1.33, p = 0.001), SGA (13.4% versus 9.5%, aOR 1.48; CI 1.43-1.53, p < 0.001), low Apgar score (1.7% versus 1.5%, aOR 1.14; CI 1.05-1.23, p = 0.001), and stillbirth (0.5% versus 0.3%, aOR 1.26; CI 1.08-1.48, p = 0.004) compared with a Norwegian-born father. In Norwegian-born women, a foreign-born father was associated with increased odds of SGA (9.3% versus 8.1%, aOR 1.13; CI 1.09-1.16, p < 0.001) and decreased odds of moderately preterm birth (4.3% versus 4.4%, aOR 0.95; CI 0.91-0.99, p = 0.015) when compared with a Norwegian-born father. In migrant women, unregistered paternal origin was associated with increased odds of very preterm birth (2.2% versus 0.9%, aOR 2.29; CI 1.97-2.66, p < 0.001), moderately preterm birth (5.6% versus 4.7%, aOR 1.15; CI 1.06-1.25, p = 0.001), SGA (13.0% versus 9.5%, aOR 1.50; CI 1.42-1.58, p < 0.001), low Apgar score (3.4% versus 1.5%, aOR 2.23; CI 1.99-2.50, p < 0.001), and stillbirth (1.5% versus 0.3%, aOR 4.87; CI 3.98-5.96, p < 0.001) compared with a Norwegian-born father. In Norwegian-born women, unregistered paternal origin was associated with increased odds of very preterm birth (4.6% versus 1.0%, aOR 4.39; CI 4.05-4.76, p < 0.001), moderately preterm birth (7.8% versus 4.4%, aOR 1.62; CI 1.53-1.71, p < 0.001), SGA (11.4% versus 8.1%, aOR 1.30; CI 1.24-1.36, p < 0.001), low Apgar score (4.6% versus 1.3%, aOR 3.51; CI 3.26-3.78, p < 0.001), and stillbirth (3.2% versus 0.4%, aOR 9.00; CI 8.15-9.93, p < 0.001) compared with births with a Norwegian-born father. The main limitations of this study were the restricted access to paternal demographics and inability to account for all lifestyle factors.Conclusion: We found that a foreign-born father was associated with adverse neonatal outcomes among births to migrant women, but to a lesser degree among births to nonmigrant women, when compared with a Norwegian-born father. Unregistered paternal origin was associated with higher odds of adverse neonatal outcomes in births to both migrant and nonmigrant women when compared with Norwegian-born fathers.Increased attention to paternal origin may help identify women in maternity care at risk for adverse neonatal outcomes.
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| 25. |
- Vik, Eline S., et al.
(författare)
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Stillbirth in relation to maternal country of birth and other migration related factors : a population-based study in Norway
- 2019
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Ingår i: BMC Pregnancy and Childbirth. - : Springer Science and Business Media LLC. - 1471-2393 .- 1471-2393. ; 19
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Tidskriftsartikel (refereegranskat)abstract
- Background: Migrant women's overall increased risk of adverse pregnancy outcomes is well known. The aim of this study was to investigate possible associations between stillbirth and maternal country of birth and other migration related factors (paternal origin, reason for immigration, length of residence and birthplace of firstborn child) in migrant women in Norway.Methods: Nationwide population-based study including births to primiparous and multiparous migrant women (n=198,520) and non-migrant women (n=1,156,444) in Norway between 1990 and 2013. Data from the Medical Birth Registry of Norway and Statistics Norway. Associations were investigated by multiple logistic regression and reported as odds ratios (ORs) with 95% confidence intervals (CIs).Results: Primiparous women from Sri-Lanka and Pakistan, and multiparous women from Pakistan, Somalia, the Philippines and Former Yugoslavia had higher odds of stillbirth when compared to non-migrant women (adjusted OR ranged from 1.58 to 1.79 in primiparous and 1.50 to 1.71 in multiparous women). Primiparous migrant women whose babies were registered with Norwegian-born fathers had decreased odds of stillbirth compared to migrant women whose babies were registered with foreign-born fathers (aOR=0.73; CI 0.58-0.93). Primiparous women migrating for work or education had decreased odds of stillbirth compared to Nordic migrants (aOR=0.58; CI 0.39-0.88). Multiparous migrant women who had given birth to their first child before arriving in Norway had higher odds of stillbirth in later births in Norway compared with multiparous migrant women who had their first child after arrival (aOR=1.28; CI 1.06-1.55). Stillbirth was not associated with length of residence in Norway.Conclusions: This study identifies sub-groups of migrant women who are at an increased risk of stillbirth, and highlights the need to improve care for them. More attention should be paid to women from certain countries, multiparous women who had their first baby before arrival and primiparous women whose babies have foreign-born fathers.
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