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Kari Klungsøyr's picture

Kari Klungsøyr

Professor
Department of Global Public Health and Primary Care
  • E-mailkari.klungsoyr@uib.no
  • Phone+47 55 58 85 35+47 48215052
  • Visitor Address
    Alrek helseklynge, blokk D, Årstadveien 17
    5009 Bergen
  • Postal Address
    Postboks 7804
    5020 Bergen

Klungsøyr has been head of the research group ‘Registry based studies of familial risk’ at the Epidemiology and Medical Statistics Section, Department of Global Public Health and Primary Care (IGS), Faculty of Medicine, University of Bergen, and is now deputy leader of Center for translational research in Epidemiology (TRACE), IGS, UiB.

Klungsøyr’s main research field has, for more than 20 years, been reproductive health and perinatal epidemiology, where one focus has been family-dependencies and how they influence associations between risk factors and adverse pregnancy outcomes. She has also focused birth defects epidemiology, severe maternal morbidity in relation to delivery, preeclampsia, stillbirth, fertility, and associations between pregnancy and later parental health.

As senior medical officer at the MBRN, a key focus has been to work for keeping data in Norway’s health registries of good quality, and Klungsøyr has carried out several validation studies concerning diagnoses and interventions registered in the MBRN. She is now leading a large collaborative project which focuses severe adverse outcomes connected to pregnancy and delivery in mother and child, where the aims include better registration of these severe outcomes, and to evaluate the use of audit of the treatment chain to identify areas for improvement.

During the last decade, Klungsøyr has been increasingly engaged in the field of neurodevelopmental disorders, with a focus on Attention Deficit/Hyperactivity Disorder (ADHD). Within this field she has been partner at the Centre of excellence headed by prof Jan Haavik: ‘K.G. Jebsen centre for research on Neuropsychiatric disorders’. This centre aimed to apply a translational approach to neuropsychiatric disorders, combining epidemiology, basic neuroscience, genetics, imaging, and clinical studies, and was highly successful, obtaining two financial periods.  

Klungsøyr is also partner of the project "Healthier Women", led by prof Rolv Skjærven, who received an EU ERC Advanced Grant for this project. A main aim is to use data from full reproductive histories to study associations between pregnancies and future health of the mother.  

Klungsøyr is scientific member of EuroPeristat, a European network where routine data in different European countries are used to develop and publish European indicators of perinatal health and to study perinatal topics based on these data. The network publishes reports showing the perinatal health indicators, the last report showed indicators for 2015-19: https://www.europeristat.com/

Klungsøyr is also a scientific member of EUROCAT, European network of population-based registries for the epidemiological surveillance of congenital anomalies, where she represents the Medical Birth Registry of Norway. This network, established in 1974, has since 2015 been part of the European Commission's Joint Research Centre. The network has surveillance and research on congenital anomalies as their main aims, and publishes statistics on the prevalence of congenital anomalies annually: https://eu-rd-platform.jrc.ec.europa.eu/eurocat_en

 

Klungsøyr's teaching focuses different topics of basic epidemiology,- for medical students, master students in nutrition and in pharmacy and for PhD students. She also teaches some topics of Public Health.

Klungsøyr supervises and guides medical students writing their theses, medical students who have chosen the "research path" in the medical study at UiB, and PhD students.

Academic article
  • Show author(s) (2024). Incidence trends of adult glioma in Norway and its association with occupation and education: A registry-based cohort study. Cancer Epidemiology. 1-7.
  • Show author(s) (2024). Heterogeneity in the risk of cardiovascular disease mortality after the hypertensive disorders of pregnancy across mothers' lifetime reproductive history. Paediatric and Perinatal Epidemiology. 230-237.
  • Show author(s) (2024). Early suppression policies protected pregnant women from COVID-19 in 2020: A population-based surveillance from the Nordic countries. Acta Obstetricia et Gynecologica Scandinavica. 1-10.
  • Show author(s) (2023). Trends in caesarean section rates in Europe from 2015 to 2019 using Robson's Ten Group Classification System: A Euro-Peristat study. BJOG: An International Journal of Obstetrics and Gynaecology. 444-454.
  • Show author(s) (2023). The burden of disease for children born alive with Turner syndrome—A European cohort study. Birth Defects Research.
  • Show author(s) (2023). Ten-year survival of children with trisomy 13 or trisomy 18: A multi-registry European cohort study. Archives of Disease in Childhood. 461-467.
  • Show author(s) (2023). Survival, hospitalisation and surgery in children born with Pierre Robin sequence: A European population-based cohort study. Archives of Disease in Childhood. 550-555.
  • Show author(s) (2023). Surveillance of multiple congenital anomalies; searching for new associations. European Journal of Human Genetics. 6 pages.
  • Show author(s) (2023). Risk factors for mortality in infancy and childhood in children with major congenital anomalies: A European population-based cohort study. Paediatric and Perinatal Epidemiology. 679-690.
  • Show author(s) (2023). Maternal age and the prevalence of congenital heart defects in Europe, 1995–2015: A register-based study. Birth Defects Research. 583-594.
  • Show author(s) (2023). Do Poor Diet and Lifestyle Behaviors Modify the Genetic Susceptibility to Impulsivity in the General Population? Nutrients. 17 pages.
  • Show author(s) (2023). Causes of death in children with congenital anomalies up to age 10 in eight European countries. BMJ Paediatrics Open. 11 pages.
  • Show author(s) (2023). Cancer risk in the siblings of individuals with major birth defects: a large Nordic population-based case-control study. International Journal of Epidemiology. 1826-1835.
  • Show author(s) (2023). Atomoxetine in Early Pregnancy and the Prevalence of Major Congenital Malformations: A Multinational Study. Journal of Clinical Psychiatry. e1-e12.
  • Show author(s) (2023). ADHD medication discontinuation and persistence across the lifespan: a retrospective observational study using population-based databases. The Lancet Psychiatry. 16-26.
  • Show author(s) (2022). Ten-Year Survival of Children With Congenital Anomalies: A European Cohort Study. Pediatrics. 1-13.
  • Show author(s) (2022). Temporal and geographical variations in survival of children born with congenital anomalies in Europe: A multi-registry cohort study. Paediatric and Perinatal Epidemiology. 792-803.
  • Show author(s) (2022). Survival of children with rare structural congenital anomalies: a multi-registry cohort study. Orphanet Journal of Rare Diseases. 11 pages.
  • Show author(s) (2022). Sex differences in childhood cancer risk among children with major birth defects: a Nordic population-based nested case-control study. International Journal of Epidemiology. 450-465.
  • Show author(s) (2022). Prevalence of vascular disruption anomalies and association with young maternal age: A EUROCAT study to compare the United Kingdom with other European countries. Birth Defects Research. 1417-1426.
  • Show author(s) (2022). Prevalence of congenital heart defects in Europe, 2008–2015: A registry-based study. Birth Defects Research. 1404-1416.
  • Show author(s) (2022). Long-term cardiovascular mortality in women with twin pregnancies by lifetime reproductive history. Paediatric and Perinatal Epidemiology. 1-9.
  • Show author(s) (2022). Labor epidural analgesia and subsequent risk of offspring autism spectrum disorder and attention-deficit/hyperactivity disorder: a cross-national cohort study of 4.5 million individuals and their siblings. American Journal of Obstetrics and Gynecology. 233.E1-233.E12.
  • Show author(s) (2022). Comparative Safety of Antiseizure Medication Monotherapy for Major Malformations. Annals of Neurology. 12 pages.
  • Show author(s) (2022). Clarity and consistency in stillbirth reporting in Europe: why is it so hard to get this right? European Journal of Public Health. 200-206.
  • Show author(s) (2022). Cesarean delivery in Norwegian nulliparous women with singleton cephalic term births, 1967–2020: a population-based study. BMC Pregnancy and Childbirth. 10 pages.
  • Show author(s) (2022). Association of sweetened carbonated beverage consumption during pregnancy and ADHD symptoms in the offspring: a study from the Norwegian Mother, Father and Child Cohort Study (MoBa). European Journal of Nutrition. 2153-2166.
  • Show author(s) (2022). Amniotic band syndrome and limb body wall complex in Europe 1980–2019. American Journal of Medical Genetics. Part A. 12 pages.
  • Show author(s) (2021). Signal Detection in EUROmediCAT: Identification and Evaluation of Medication–Congenital Anomaly Associations and Use of VigiBase as a Complementary Source of Reference. Drug Safety. 765-785.
  • Show author(s) (2021). Prevention of Neural Tube Defects in Europe: A Public Health Failure. Frontiers in pediatrics. 1-9.
  • Show author(s) (2021). Male to female ratios in autism spectrum disorders by age, intellectual disability and attention-deficit/hyperactivity disorder. Acta Psychiatrica Scandinavica. 635-646.
  • Show author(s) (2021). Macrolide and lincosamide antibiotic exposure in the first trimester of pregnancy and risk of congenital anomaly: A European case-control study. Reproductive Toxicology. 101-108.
  • Show author(s) (2021). Linking a European cohort of children born with congenital anomalies to vital statistics and mortality records: A EUROlinkCAT study. PLOS ONE. 15 pages.
  • Show author(s) (2021). International versus national growth charts for identifying small and large-for-gestational age newborns: A population-based study in 15 European countries. The Lancet Regional Health - Europe. 1-9.
  • Show author(s) (2021). Familial co-Aggregation of attention-deficit/hyperactivity disorder and autoimmune diseases: A cohort study based on Swedish population-wide registers. International Journal of Epidemiology. 898-909.
  • Show author(s) (2021). Epidemiology of Pierre-Robin sequence in Europe: A population-based EUROCAT study. Paediatric and Perinatal Epidemiology. 530-539.
  • Show author(s) (2021). Do Genetic Variants Modify the Effect of Smoking on Risk of Preeclampsia in Pregnancy? American Journal of Perinatology.
  • Show author(s) (2021). Clustering Longitudinal Blood Pressure Trajectories to Examine Heterogeneity in Outcomes among Preeclampsia Cases and Controls. Hypertension. 2034-2044.
  • Show author(s) (2021). COVID‐19 in pregnancy – characteristics and outcomes of pregnant women admitted to hospital because of SARS‐CoV‐2 infection in the Nordic countries. Acta Obstetricia et Gynecologica Scandinavica. 1611-1619.
  • Show author(s) (2020). Sex of the first-born and obstetric complications in the subsequent birth. A study of 2.3 million second births from Denmark, Finland, Norway, and Sweden. Acta Obstetricia et Gynecologica Scandinavica. 1381-1386.
  • Show author(s) (2020). Sex differences in parent–offspring recurrence of attention-deficit/hyperactivity disorder. Journal of Child Psychology and Psychiatry. 1-9.
  • Show author(s) (2020). Multilevel analyses of related public health indicators: The European Surveillance of Congenital Anomalies (EUROCAT) Public Health Indicators. Paediatric and Perinatal Epidemiology. 122-129.
  • Show author(s) (2020). Maternal use of folic acid and multivitamin supplements and infant risk of birth defects in Norway, 1999–2013. British Journal of Nutrition. 316-329.
  • Show author(s) (2020). Maternal risk factors for the VACTERL association: A EUROCAT case-control study. Birth Defects Research. 688-698.
  • Show author(s) (2020). Interpregnancy weight change and recurrence of gestational diabetes mellitus: a population-based cohort study. BJOG: An International Journal of Obstetrics and Gynaecology. 1608-1616.
  • Show author(s) (2020). Heart failure in women with hypertensive disorders of pregnancy: Insights from the cardiovascular disease in Norway project. Hypertension. 1506-1513.
  • Show author(s) (2020). Genetic predisposition to hypertension is associated with preeclampsia in European and Central Asian women. Nature Communications. 1-14.
  • Show author(s) (2020). Does caesarean delivery in the first pregnancy increase the risk for adverse outcome in the second? A registry-based cohort study on first and second singleton births in Norway. BMJ Open. 1-9.
  • Show author(s) (2020). Cancer risk in individuals with major birth defects: large Nordic population based case-control study among children, adolescents, and adults. The BMJ. 14 pages.
  • Show author(s) (2020). Attention-deficit/hyperactivity disorder and smoking habits in pregnant women. PLOS ONE. 13 pages.
  • Show author(s) (2019). Spectrum of congenital anomalies among VACTERL cases: a EUROCAT population-based study. Pediatric Research. 1-9.
  • Show author(s) (2019). Patterns of psychiatric comorbidity and genetic correlations provide new insights into differences between attention-deficit/hyperactivity disorder and autism spectrum disorder. Biological Psychiatry. 46 pages.
  • Show author(s) (2019). Methadone, Pierre Robin sequence and other congenital anomalies: case–control study. Archives of Disease in Childhood: Fetal and Neonatal Edition. 151-157.
  • Show author(s) (2019). Maternal age and risk of cesarean section in women with induced labor at term—A Nordic register‐based study. Acta Obstetricia et Gynecologica Scandinavica. 283-289.
  • Show author(s) (2019). Epidemiology of limb reduction defects as registered in the Medical Birth Registry of Norway, 1970-2016: Population based study. PLOS ONE. 1-17.
  • Show author(s) (2019). Epidemiology of congenital cerebral anomalies in Europe: a multicentre, population-based EUROCAT study. Archives of Disease in Childhood. 1181-1187.
  • Show author(s) (2019). Epidemiology of achondroplasia: A population-based study in Europe. American Journal of Medical Genetics. Part A. 1791-1798.
  • Show author(s) (2019). Epidemiology of Dandy-Walker malformation in Europe: A EUROCAT population-based registry study. Neuroepidemiology. 169-179.
  • Show author(s) (2019). Congenital clubfoot in Europe: A population-based study. American Journal of Medical Genetics. Part A. 595-601.
  • Show author(s) (2018). Trends in prescription drug use during pregnancy and postpartum in Norway, 2005 to 2015. Pharmacoepidemiology and Drug Safety. 995-1004.
  • Show author(s) (2018). The five-year survival of children with Down syndrome in Norway 1994-2009 differed by associated congenital heart defects and extracardiac malformations. Acta Paediatrica. 845-853.
  • Show author(s) (2018). Risk of eclampsia or HELLP-syndrome by institution availability and place of delivery - A population-based cohort study. Pregnancy Hypertension. 1-8.
  • Show author(s) (2018). Pregnancy-related risk factors are associated with a significant burden of treated hypertension within 10 years of delivery: Findings from a population-based Norwegian Cohort. Journal of the American Heart Association (JAHA). 20 pages.
  • Show author(s) (2018). Metformin exposure in first trimester of pregnancy and risk of all or specific congenital anomalies: exploratory case-control study. The BMJ. 9 pages.
  • Show author(s) (2018). Epidemiology of septo-optic dysplasia with focus on prevalence and maternal age? A EUROCAT study. European Journal of Medical Genetics. 483-488.
  • Show author(s) (2018). Common psychiatric and metabolic comorbidity of adult attention-deficit/hyperactivity disorder: A population-based cross-sectional study. PLOS ONE. 12 pages.
  • Show author(s) (2018). Can oxytocin augmentation modify the risk of epidural analgesia by maternal age in cesarean sections? Acta Obstetricia et Gynecologica Scandinavica. 872-879.
  • Show author(s) (2018). A Family Based Study of Carbon Monoxide and Nitric Oxide Signalling Genes and Preeclampsia. Paediatric and Perinatal Epidemiology. 1-12.
  • Show author(s) (2017). The limitations of some European healthcare databases for monitoring the effectiveness of pregnancy prevention programmes as risk minimisation measures. European Journal of Clinical Pharmacology. 513-520.
  • Show author(s) (2017). Preterm births and use of medication in early adulthood: a population-based registry study. Pharmacoepidemiology and Drug Safety. 742-751.
  • Show author(s) (2017). National Rates of Uterine Rupture are not Associated with Rates of Previous Caesarean Delivery: Results from the Nordic Obstetric Surveillance Study. Paediatric and Perinatal Epidemiology. 176-182.
  • Show author(s) (2017). Mode of first delivery and severe maternal complications in the subsequent pregnancy. Acta Obstetricia et Gynecologica Scandinavica. 1053-1062.
  • Show author(s) (2017). Increased risk of peripartum perinatal mortality in unplanned births outside an institution: a retrospective population-based study. American Journal of Obstetrics and Gynecology. 210.e1-210.e12.
  • Show author(s) (2017). Gestational diabetes mellitus and interpregnancy weight change: A population-based cohort study. PLoS Medicine. 19 pages.
  • Show author(s) (2017). Gender differences in psychiatric comorbidity: a population-based study of 40 000 adults with attention deficit hyperactivity disorder. Acta Psychiatrica Scandinavica. 176-186.
  • Show author(s) (2017). Gastroschisis in Europe - a Case-malformed-control study of medication and maternal illness during pregnancy as risk factors. Paediatric and Perinatal Epidemiology. 549-559.
  • Show author(s) (2017). Congenital anomalies and the severity of impairments for cerebral palsy. Developmental Medicine & Child Neurology. 1174-1180.
  • Show author(s) (2017). Chronic hypertension in women after perinatal exposure to preeclampsia, being born small for gestational age or preterm. Paediatric and Perinatal Epidemiology. 89-98.
  • Show author(s) (2017). Cesarean section trends in the Nordic Countries - a comparative analysis with the Robson classification. Acta Obstetricia et Gynecologica Scandinavica. 607-616.
  • Show author(s) (2017). Beta-Blocker Use in Pregnancy and Risk of Specific Congenital Anomalies: A European Case-Malformed Control Study. Drug Safety. 13 pages.
  • Show author(s) (2017). Attention-deficit/hyperactivity disorder in offspring of mothers with inflammatory and immune system diseases. Biological Psychiatry. 452-459.
  • Show author(s) (2017). Associations between attention-deficit/hyperactivity disorder and autoimmune diseases are modified by sex: a population-based cross-sectional study. European Child and Adolescent Psychiatry. 1-13.
  • Show author(s) (2017). Association between pregravid physical activity and family history of stroke and risk of stillbirth: Population-based cohort study. BMJ Open. 1-8.
  • Show author(s) (2016). Variations in very preterm birth rates in 30 high- income countries: are valid international compari sons possible using routine data? . BJOG: An International Journal of Obstetrics and Gynaecology. 1-10.
  • Show author(s) (2016). Variations in multiple birth rates and impact on perinatal outcomes in Europe. PLOS ONE.
  • Show author(s) (2016). Socioeconomic inequalities in stillbirth rates in Europe: measuring the gap using routine data from the Euro-Peristat Project. BMC Pregnancy and Childbirth. 1-13.
  • Show author(s) (2016). Selective Serotonin Reuptake Inhibitor (SSRI) antidepressants in pregnancy and congenital anomalies: Analysis of linked databases in Wales, Norway and Funen, Denmark. PLOS ONE. 26 pages.
  • Show author(s) (2016). Risk of congenital anomalies after exposure to asthma medication in the first trimester of pregnancy – a cohort linkage study. BJOG: An International Journal of Obstetrics and Gynaecology. 1609-1618.
  • Show author(s) (2016). Prevalence of microcephaly in Europe: Population based study. The BMJ. 6 pages.
  • Show author(s) (2016). Prescribing of antidiabetic medicines before, during and after pregnancy: A study in seven European regions. PLOS ONE. 17 pages.
  • Show author(s) (2016). Preconception cardiovascular risk factor differences between gestational hypertension and preeclampsia: Cohort Norway study. Hypertension. 1173-1180.
  • Show author(s) (2016). Maternal use of folic acid supplements and infant risk of neural tube defects in Norway 1999-2013. Scandinavian Journal of Public Health. 619-626.
  • Show author(s) (2016). Maternal smoking status in successive pregnancies and risk of having a small for gestational age infant. Paediatric and Perinatal Epidemiology. 21-28.
  • Show author(s) (2016). Long-term mortality in mothers with perinatal losses and risk modification by surviving children and attained education: A population-based cohort study. BMJ Open. 8 pages.
  • Show author(s) (2016). Elective cesarean section or not? Maternal age and risk of adverse outcomes at term: A population-based registry study of low-risk primiparous women. BMC Pregnancy and Childbirth. 11 pages.
  • Show author(s) (2016). EUROmediCAT signal detection: an evaluation of selected congenital anomaly-medication associations. British Journal of Clinical Pharmacology. 1094-1109.
  • Show author(s) (2016). EUROmediCAT signal detection: a systematic method for identifying potential teratogenic medication. British Journal of Clinical Pharmacology. 1110-1122.
  • Show author(s) (2016). Declines in stillbirth and neonatal mortality rates in Europe between 2004 and 2010: results from the Euro-Peristat project. Journal of Epidemiology and Community Health. 609-615.
  • Show author(s) (2016). Asthma medication prescribing before, during and after pregnancy: a study in seven European regions. BMJ Open. 13 pages.
  • Show author(s) (2016). Adult ADHD and Comorbid Somatic Disease: A Systematic Literature Review. Journal of Attention Disorders. 203-228.
  • Show author(s) (2016). Abnormally invasive placenta—prevalence, risk factors and antenatal suspicion: results from a large population-based pregnancy cohort study in the Nordic countries. BJOG: An International Journal of Obstetrics and Gynaecology. 1348-1355.
  • Show author(s) (2015). Use of asthma medication during pregnancy and risk of specific congenital anomalies: A European case-malformed control study. Journal of Allergy and Clinical Immunology. 1496-1502.
  • Show author(s) (2015). The Nordic Obstetric Surveillance Study: A study of complete uterine rupture, abnormally invasive placenta, peripartum hysterectomy, and severe blood loss at delivery. Acta Obstetricia et Gynecologica Scandinavica. 734-744.
  • Show author(s) (2015). Selective serotonin reuptake inhibitor antidepressant use in first trimester pregnancy and risk of specific congenital anomalies: a European register-based study. European Journal of Epidemiology (EJE). 1187-1198.
  • Show author(s) (2015). Risk of fetal death with preeclampsia. Obstetrics and Gynecology. 628-635.
  • Show author(s) (2015). Preeclampsia in pregnancy and later use of antihypertensive drugs. European Journal of Epidemiology (EJE). 501-508.
  • Show author(s) (2015). Pre-pregnant body mass index and recreational physical activity: effects on perinatal mortality in a prospective pregnancy cohort. BJOG: An International Journal of Obstetrics and Gynaecology. 1322-1330.
  • Show author(s) (2015). Pre-eclampsia and assisted reproductive technologies: Consequences of advanced maternal age, interbirth intervals, new partner and smoking habits. BJOG: An International Journal of Obstetrics and Gynaecology. 915-922.
  • Show author(s) (2015). Placental abruption and long-term maternal cardiovascular disease mortality: a population-based registry study in Norway and Sweden. European Journal of Epidemiology (EJE). 501-511.
  • Show author(s) (2015). Neonatal outcome of singleton term breech deliveries in Norway from 1991 to 2011. Acta Obstetricia et Gynecologica Scandinavica. 997-1004.
  • Show author(s) (2015). Meckel–Gruber Syndrome: a population-based study on prevalence, prenatal diagnosis, clinical features, and survival in Europe. European Journal of Human Genetics. 746-752.
  • Show author(s) (2015). Maternal age and emergency operative deliveries at term: a population-based registry study among low-risk primiparous women. BJOG: An International Journal of Obstetrics and Gynaecology. 1642-1651.
  • Show author(s) (2015). Long term trends in prevalence of neural tube defects in Europe: population based study. The BMJ. 6 pages.
  • Show author(s) (2015). Improving information on maternal medication use by linking prescription data to congenital anomaly registers: a EUROmediCAT study. Drug Safety. 1083-1093.
  • Show author(s) (2015). Folic acid supplements and risk of oral clefts in the newborn: A population-based study. British Journal of Nutrition. 1456-1463.
  • Show author(s) (2015). Epidemiology of hypospadias in Europe: a registry-based study. World Journal of Urology. 2159-2167.
  • Show author(s) (2015). Epidemiology of congenital diaphragmatic hernia in Europe: A register-based study. Archives of Disease in Childhood: Fetal and Neonatal Edition. F137-F144.
  • Show author(s) (2015). Emergency peripartum hysterectomy: Results from the prospective Nordic Obstetric Surveillance Study (NOSS). Acta Obstetricia et Gynecologica Scandinavica. 745-754.
  • Show author(s) (2015). Duration of pregnancy, even at term, predicts long-term risk of coronary heart disease and stroke mortality in women: a population-based study. American Journal of Obstetrics and Gynecology. 518.e1-518.e8.
  • Show author(s) (2015). Congenital anomalies associated with trisomy 18 or trisomy 13: A registry-based study in 16 european countries, 2000-2011. American Journal of Medical Genetics. Part A. 3062-3069.
  • Show author(s) (2015). Can 'early programming' be partly explained by smoking? Results from a prospective, population-based cohort study. Paediatric and Perinatal Epidemiology. 50-59.
  • Show author(s) (2015). Association of Women's Reproductive History with Long-term Mortality and Effect of Socioeconomic Factors. Obstetrics and Gynecology. 1181-1187.
  • Show author(s) (2015). Antiepileptic drug prescribing before, during and after pregnancy: a study in seven European regions. Pharmacoepidemiology and Drug Safety. 1144-1154.
  • Show author(s) (2014). Varying gestational age patterns in cesarean delivery: An international comparison. BMC Pregnancy and Childbirth. 9 pages.
  • Show author(s) (2014). Validity of pre-eclampsia registration in the medical birth registry of Norway for women participating in the Norwegian mother and child cohort study, 1999-2010. Paediatric and Perinatal Epidemiology. 362-371.
  • Show author(s) (2014). Prevalence, prenatal diagnosis and clinical features of oculo-auriculo-vertebral spectrum: A registry-based study in Europe. European Journal of Human Genetics. 1026-1033.
  • Show author(s) (2014). Population-based trends in pregnancy hypertension and pre-eclampsia: an international comparative study. BMJ Open.
  • Show author(s) (2014). Perinatal mortality by gestational week and size at birth in singleton pregnancies at and beyond term: A nationwide population-based cohort study. BMC Pregnancy and Childbirth. 9 pages.
  • Show author(s) (2014). Perfluoroalkyl substances during pregnancy and validated preeclampsia among nulliparous women in the Norwegian mother and child cohort study. American Journal of Epidemiology. 824-833.
  • Show author(s) (2014). Major congenital anomalies in babies born with Down syndrome: a EUROCAT population-based registry study. American Journal of Medical Genetics. Part A. 2979-2986.
  • Show author(s) (2014). Hirschsprung's disease prevalence in Europe: A register based study. Birth Defects Research Part A: Clinical and Molecular Teratology. 695-702.
  • Show author(s) (2014). Healthcare databases in Europe for studying medicine use and safety during pregnancy. Pharmacoepidemiology and Drug Safety. 586-594.
  • Show author(s) (2014). Epidemiology of multiple congenital anomalies in Europe: A EUROCAT population-based registry study. Birth Defects Research Part A: Clinical and Molecular Teratology. 270-276.
  • Show author(s) (2014). Availability and access in modern obstetric care: a retrospective population-based study. BJOG: An International Journal of Obstetrics and Gynaecology. 290-299.
  • Show author(s) (2014). Associations of adherence to the New Nordic Diet with risk of preeclampsia and preterm delivery in the Norwegian Mother and Child Cohort Study (MoBa). European Journal of Epidemiology (EJE). 753-765.
  • Show author(s) (2013). Validity of the diagnosis of pre-eclampsia in the Medical Birth Registry of Norway. Acta Obstetricia et Gynecologica Scandinavica. 943-950.
  • Show author(s) (2013). Validity of pre-eclampsia diagnosis in Medical Birth Registry of Norway. Acta Obstetricia et Gynecologica Scandinavica. 243-950.
  • Show author(s) (2013). Twenty-year trends in the prevalence of Down syndrome and other trisomies in Europe: impact of maternal age and prenatal screening. European Journal of Human Genetics. 27-33.
  • Show author(s) (2013). Trends in the prevalence, risk and pregnancy outcome of multiple births with congenital anomaly: a registry-based study in 14 European countries 1984-2007. BJOG: An International Journal of Obstetrics and Gynaecology. 707-716.
  • Show author(s) (2013). Recent Decrease in the Prevalence of Congenital Heart Defects in Europe. Journal of Pediatrics. 108-U135.
  • Show author(s) (2013). Pre-pregnant body mass index, gestational weight gain and the risk of operative delivery. Acta Obstetricia et Gynecologica Scandinavica. 809-815.
  • Show author(s) (2013). International Comparisons of Fetal and Neonatal Mortality Rates in High-Income Countries: Should Exclusion Thresholds Be Based on Birth Weight or Gestational Age? PLOS ONE.
  • Show author(s) (2013). Birth outcomes among offspring of adult cancer survivors: A population-based study. International Journal of Cancer. 2696-2705.
  • Show author(s) (2012). Spectrum of congenital anomalies in pregnancies with pregestational diabetes. Birth Defects Research Part A: Clinical and Molecular Teratology. 134-140.
  • Show author(s) (2012). Secular trends in the epidemiology of pre-eclampsia throughout 40 years in Norway: prevalence, risk factors and perinatal survival. Paediatric and Perinatal Epidemiology. 190-198.
  • Show author(s) (2012). Pre- and perinatal risk factors in adults with attention-deficit/hyperactivity disorder. Biological Psychiatry. 474-481.
  • Show author(s) (2012). Maternal age and elective cesarean section in a low-risk population. Acta Obstetricia et Gynecologica Scandinavica. 816-823.
  • Show author(s) (2012). In utero exposure to maternal tobacco smoke and subsequent obesity, hypertension, and gestational diabetes among women in the MoBa Cohort. Environmental Health Perspectives. 355-360.
  • Show author(s) (2012). Cardiovascular mortality after pre-eclampsia in one child mothers: prospective, population based cohort study. BMJ. British Medical Journal. 10 pages.
  • Show author(s) (2011). Recurrence of prolonged and post-term gestational age across generations: maternal and paternal contribution. BJOG: An International Journal of Obstetrics and Gynaecology. 1630-1635.
  • Show author(s) (2011). Maternal birth characteristics and perinatal mortality in twin offspring. An intergenerational population-based study in Norway, 1967-2008. BJOG: An International Journal of Obstetrics and Gynaecology. 698-705.
  • Show author(s) (2010). Valproic acid monotherapy in pregnancy and major congenital malformations. New England Journal of Medicine. 2185-2193.
  • Show author(s) (2010). Recurrence of stillbirth in sibships: population-based cohort study. American Journal of Epidemiology. 1123-1130.
  • Show author(s) (2010). Mothers' and fathers' birth characteristics and perinatal mortality in their offspring: a population-based cohort study. Paediatric and Perinatal Epidemiology. 282-292.
  • Show author(s) (2010). Intrauterine exposure to carbamazepine and specific congenital malformations: systematic review and case-control study. BMJ (Clinical Research Edition). 7 pages.
  • Show author(s) (2010). International trends of Down Syndrome 1993-2004: births in relation to maternal age and terminations of pregnancies. Birth Defects Research Part A: Clinical and Molecular Teratology. 474-479.
  • Show author(s) (2009). Self-selection and bias in a large prospective pregnancy cohort in Norway. Paediatric and Perinatal Epidemiology. 597-608.
  • Show author(s) (2009). Prior adverse pregnancy outcome and the risk of stillbirth. Obstetrics and Gynecology. 1259-1270.
  • Show author(s) (2009). Intergenerational birth weight associations by mother's birth order - The mechanisms behind the paradox: A population-based cohort study. Early Human Development. 577-581.
  • Show author(s) (2008). Registration of Down syndrome in the Medical Birth Registry of Norway: Validity and time trends. Acta Obstetricia et Gynecologica Scandinavica. 824-830.
  • Show author(s) (2008). Parenthood probability and pregnancy outcome in patients with a cancer diagnosis during adolescence and young adulthood. Human Reproduction. 178-186.
  • Show author(s) (2008). Outcomes of pregnancies following a birth with major birth defects: A population based study. Early Human Development. 651-657.
  • Show author(s) (2008). Maternal and paternal contribution to intergenerational recurrence of breech delivery: population based cohort study. BMJ. British Medical Journal. 872-876.
  • Show author(s) (2007). Selective fertility – the examples of perinatal death and preeclampsia. Norsk Epidemiologi. 175-180.
  • Show author(s) (2007). Reduced fertility after cesarean delivery - A maternal choice. Obstetrics and Gynecology. 1256-1263.
  • Show author(s) (2007). Genetic and environmental influences on birth weight, birth length, head circumference and gestational age using population based parent-offspring data. American Journal of Epidemiology. 734-741.
  • Show author(s) (2005). Twenty years experience with semen cryopreservation in testicular cancer patients: who needs it? European Urology. 779-785.
  • Show author(s) (2005). Twenty years experience with semen cryopreservation in testicular cancer patients: who needs it? European Urology. 779-785.
  • Show author(s) (2005). Parenthood in survivors after adulthood cancer and perinatal health in their offspring. Journal of the National Cancer Institute. Monographs. 77-82.
  • Show author(s) (2005). Parenthood in Survivors After Adulthood Cancer and Perinatal Health in Their Offspring: A Preliminary Report. Journal of the National Cancer Institute. Monographs. 77-82.
  • Show author(s) (2000). Infant's length at birth: an independent effect on perinatal mortality. Acta Obstetricia et Gynecologica Scandinavica. 459-464.
  • Show author(s) (1994). Signs of subclinical eating disorders in teenage girls. Scandinavian Journal of Primary Health Care. 197-203.
Academic lecture
  • Show author(s) (2022). Cancer risk in individuals with siblings with major birth defects: A large Nordic population-based case-control study.
  • Show author(s) (2021). Childhood cancer risk among individuals with major birth defects: A Nordic collaborative study.
  • Show author(s) (2020). Cancer risk in individuals with major birth defects: A large Nordic population-based case-control study among children, adolescents, and adults.
  • Show author(s) (2019). Parent-offspring recurrence of attention-deficit/hyperactivity disorder.
  • Show author(s) (2019). Parent-offspring recurrence of ADHD.
  • Show author(s) (2018). Psychiatric comorbidity and genetic correlations provide new insights into differences between ADHD and autism .
  • Show author(s) (2018). Psychiatric comorbidity and genetic correlations provide new insights into differences between ADHD and autism .
  • Show author(s) (2018). Psychiatric comorbidities in adults with ADHD and/or autism: Can patterns of comorbidities together with genetics add knowledge on etiologic relations? .
  • Show author(s) (2017). Psychiatric comorbidities in male and female adults with ADHD.
  • Show author(s) (2017). Maternal age, epidural analgesia and oxytocin augmentation as risk factors for cesarean delivery in nulliparous women in spontaneous labor at term.
  • Show author(s) (2017). Gender Differences in Psychiatric Comorbidity: A Population-based Study of 40,000 Adults with Attention-Deficit/Hyperactivity Disorder.
  • Show author(s) (2014). Cesarean delivery in induced women - Nordic countries 2000-2011.
  • Show author(s) (2014). Caesaren delivery inNordic countries 1991-2011: a registry study using the Robson groups.
Abstract
  • Show author(s) (2018). Metformin exposure in the first trimester of pregnancy and risk of all or specific congenital anomalies: Exploratory case-control study. Obstetrical and Gynecological Survey. 619-620.
  • Show author(s) (2013). Low birth weight babies are more often smokers as adults. American Journal of Epidemiology. S77-S77.
  • Show author(s) (2013). Availability and access in modern obstetric care: a retrospective population-based cohort study. BJOG: An International Journal of Obstetrics and Gynaecology. 412-413.
  • Show author(s) (2012). Risk of preeclampsia in pregnancies from assisted reproductive technologies. Acta Obstetricia et Gynecologica Scandinavica. 132-132.
  • Show author(s) (2012). Nordic Obstetric Surveillance Study (NOSS). Preliminary results and perspectives. Acta Obstetricia et Gynecologica Scandinavica. 45-46.
  • Show author(s) (2012). IS INCREASED PERINATAL MORTALITY FOR THE SECOND TWIN RELATED TO ASSISTED REPRODUCTIVE TECHNIQUES? A POPULATION BASED COHORT STUDY FROM NORWAY, 1988-2008. American Journal of Epidemiology. S37-S37.
  • Show author(s) (2010). Classification of pre-eclamptic pregnancies in health registries. An evaluation of criteria selected and pregnancies included in the Medical Birth Registry of Norway. Hypertension in Pregnancy.
  • Show author(s) (2009). Down Syndrome registration in the Medical Birth Registry of Norway: Validity and time trends. Birth Defects Research Part A: Clinical and Molecular Teratology. 238-238.
  • Show author(s) (2008). Registration of Down's syndrome in the medical birth registry of Norway; validity and time trends. European Journal of Neurology. 348-349.
  • Show author(s) (2007). Recurrence of stillbirth by gestational age. American Journal of Epidemiology. S27-S27.
  • Show author(s) (2007). Preeclampsia and long-term maternal mortality. American Journal of Epidemiology. S27-S27.
Academic literature review
  • Show author(s) (2023). Anxiety, mood, and substance use disorders in adult men and women with and without attention-deficit/hyperactivity disorder: A substantive and methodological overview. Neuroscience and Biobehavioral Reviews. 1-18.
  • Show author(s) (2018). Trends in congenital anomalies in Europe from 1980 to 2012. PLOS ONE. 18 pages.
  • Show author(s) (2016). Variations in rates of severe perineal tears an d episiotomies in 20 European countries: a study based on routine national data in Euro-Peristat Project . Acta Obstetricia et Gynecologica Scandinavica. 746-754.
  • Show author(s) (2015). Change in paternity, risk of placental abruption and confounding by birth interval: A population-based prospective cohort study in Norway, 1967-2009. BMJ Open. 8 pages.

More information in national current research information system (CRIStin)

Ongoing projects:

2023 -: New project, information will come in December

2022 -: "Men's health factors and risk of fetal loss and stillbirth". Role: Project leader. Funding: Norwegian association for unexpected child loss 

2021 -: "OCiNOR" - Obstetric Care in Norway - a Collaborative and Knowledge-building project". Role: Project leader - Funder: Research Council of Norway

2020 -: "TIMESPAN" - Management of chronic cardiometabolic disease and treatment discontinuity in adult ADHD patients". Role: Work Package Leader. Funder: EU  

2019/2020 -: "GlioLink" - Improving prognosis of patients with glioblastoma: Linking health registry and clinical data to basic brain tumour research". Role: Partner/supervisor. Funder: Norwegian Cancer Society / Research Council of Norway

2020 - : "NEDCOM" - Neurodevelopmental disorders and comorbidity - sex differences, risk factors and functional aspects from childhood to adulthood. Role: Project leader. Funder: several, including NEVSOM 

2019 -: “Healthier Women” - A woman´s reproductive experience. Long term implications for chronic disease and death. Role: Partner and supervisor. Funder: EU - ERC Advanced grant to prof Rolv Skjærven. 

2016 -: "Congenital limb reduction defects in Norway - epidemiology, risk factors and treatment". Role: Project leader of Part I, Partner of Part II. Collaborative project with Oslo University Hospital 

2014 -: "Cancer risk in families with children with birth defects: a Nordic collaboration". Role: Partner/supervisor. Funder: Norwegian Cancer Society 

Fields of competence 
ADHD
Epidemiology
Obstetrics and Gynaecology
Perinatal epidemiology
Public Health
Reproductive Health