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Open AccessDisease-specific health spending by age, sex, and type of care in Norway: a national health registry study
Norway is a high-income nation with universal tax-financed health care and among the highest per person health spending in the world. This study estimates Norwegian health expenditures by health condition, age...
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Article
Open AccessThe Burden of Proof studies: assessing the evidence of risk
Exposure to risks throughout life results in a wide variety of outcomes. Objectively judging the relative impact of these risks on personal and population health is fundamental to individual survival and socie...
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Article
Open AccessGarbage codes in the Norwegian Cause of Death Registry 1996–2019
Reliable statistics on the underlying cause of death are essential for monitoring the health in a population. When there is insufficient information to identify the true underlying cause of death, the death wi...
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Article
Open AccessParental income gradients in adult health: a national cohort study
Disparities in health by adult income are well documented, but we know less about the childhood origins of health inequalities, and it remains unclear how the shape of the gradient varies across health conditi...
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Article
Open AccessInjury death certificates without specification of the circumstances leading to the fatal injury – the Norwegian Cause of Death Registry 2005–2014
For injury deaths, the underlying cause of death is defined as the circumstances leading to the injury. When this information is missing, the ICD-10 code X59 (Exposure to unspecified factor) is used. Lack of k...
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Open AccessPrevalence and stability of mental disorders among young adults: findings from a longitudinal study
Mental disorders often have onset early in life, contribute substantially to the global disease burden, and may interfere with young people’s ability to complete age-relevant tasks in important developmental p...
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Article
Open AccessCirculating vitamin D in relation to cancer incidence and survival of the head and neck and oesophagus in the EPIC cohort
Experimental and epidemiological data suggest that vitamin D play a role in pathogenesis and progression of cancer, but prospective data on head and neck cancer (HNC) and oesophagus cancer are limited. The Eur...
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Open AccessCellular immune activity biomarker neopterin is associated hyperlipidemia: results from a large population-based study
Increased serum neopterin had been described in older age two decades ago. Neopterin is a biomarker of systemic adaptive immune activation that could be potentially implicated in metabolic syndrome (MetS). Mea...
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Open AccessSupplemental folic acid in pregnancy and childhood cancer risk
We investigated the association between supplemental folic acid in pregnancy and childhood cancer in a nation-wide study of 687 406 live births in Norway, 1999–2010, and 799 children diagnosed later with cancer.
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Open AccessDifferences in perinatal and infant mortality in high-income countries: artifacts of birth registration or evidence of true differences?
Variation in birth registration criteria may compromise international comparisons of fetal and infant mortality. We examined the effect of birth registration practices on fetal and infant mortality rates to de...
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Article
Open AccessMusculoskeletal disorders in Norway: prevalence of chronicity and use of primary and specialist health care services
Uncertainty exists with regards to the extent of prevalence and health care use for musculoskeletal disorders in Norway. The aim of this study was to estimate the prevalence of chronic musculoskeletal disorder...
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Article
Open AccessAre the Norwegian health research investments in line with the disease burden?
The relationship between research funding across therapeutic areas and the burden of disease in Norway has not been investigated. Further, few studies have looked at the association between national research i...
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Article
Open AccessFolic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: a prospective observational cohort study
Health authorities in numerous countries recommend periconceptional folic acid supplementation to prevent neural tube defects. The objective of this study was to examine the association of dietary folate intak...
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Open AccessRetraction Note: “folic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: a prospective observational cohort study”
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Open AccessRetracted: Folic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: a prospective observational cohort study
Health authorities in numerous countries recommend periconceptional folic acid to pregnant women to prevent neural tube defects. The objective of this study was to examine the association of folic acid supplem...
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Article
Body mass index, smoking, and risk of death between 40 and 70 years of age in a Norwegian cohort of 32,727 women and 33,475 men
Overweight-obesity and smoking are two main preventable causes of premature death. Because the relationship between smoking and body mass index (BMI) complicates the interpretation of associations between BMI ...
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Self-reported smoking status and plasma cotinine concentrations among pregnant women in the Norwegian Mother and Child Cohort Study
Underreporting of smoking in epidemiologic studies is common and may constitute a validity problem, leading to biased association measures. In this prospective study, we validated self-reported tobacco use aga...
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Open AccessRisk of diabetes after gestational diabetes and preeclampsia. A registry-based study of 230,000 women in Norway
This study aimed to use a population-based Prescription Database to explore later development of diabetes in women registered with gestational diabetes mellitus (GDM) and/or preeclampsia in the Medical Birth R...
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Article
Nested Case-Control Study of One-Carbon Metabolites in Mid-Pregnancy and Risks of Cleft Lip With and Without Cleft Palate
Evidence exists for an association between use of vitamin supplements with folic acid in early pregnancy and reduced risk for offspring with cleft lip with/without cleft palate (CLP). A few observations have b...
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Article
Functional inference of the methylenetetrahydrofolate reductase 677 C > T and 1298A > C polymorphisms from a large-scale epidemiological study
Two functional single nucleotide polymorphisms, 677C > T and 1298A > C have been described for the methylenetetrahydrofolate (MTHFR) gene. Both are associated with reduced enzyme activity in vitro. For the 677...
