- E-mailkari.klungsoyr@uib.no
- Phone+47 55 58 85 35+47 48215052
- Visitor AddressAlrek helseklynge, blokk D, Årstadveien 175009 Bergen
- Postal AddressPostboks 78045020 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.
- (2024). Incidence trends of adult glioma in Norway and its association with occupation and education: A registry-based cohort study. Cancer Epidemiology. 1-7.
- (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.
- (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.
- (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.
- (2023). The burden of disease for children born alive with Turner syndrome—A European cohort study. Birth Defects Research.
- (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.
- (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.
- (2023). Surveillance of multiple congenital anomalies; searching for new associations. European Journal of Human Genetics. 6 pages.
- (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.
- (2023). Maternal age and the prevalence of congenital heart defects in Europe, 1995–2015: A register-based study. Birth Defects Research. 583-594.
- (2023). Do Poor Diet and Lifestyle Behaviors Modify the Genetic Susceptibility to Impulsivity in the General Population? Nutrients. 17 pages.
- (2023). Causes of death in children with congenital anomalies up to age 10 in eight European countries. BMJ Paediatrics Open. 11 pages.
- (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.
- (2023). Atomoxetine in Early Pregnancy and the Prevalence of Major Congenital Malformations: A Multinational Study. Journal of Clinical Psychiatry. e1-e12.
- (2023). ADHD medication discontinuation and persistence across the lifespan: a retrospective observational study using population-based databases. The Lancet Psychiatry. 16-26.
- (2022). Ten-Year Survival of Children With Congenital Anomalies: A European Cohort Study. Pediatrics. 1-13.
- (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.
- (2022). Survival of children with rare structural congenital anomalies: a multi-registry cohort study. Orphanet Journal of Rare Diseases. 11 pages.
- (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.
- (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.
- (2022). Prevalence of congenital heart defects in Europe, 2008–2015: A registry-based study. Birth Defects Research. 1404-1416.
- (2022). Long-term cardiovascular mortality in women with twin pregnancies by lifetime reproductive history. Paediatric and Perinatal Epidemiology. 1-9.
- (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.
- (2022). Comparative Safety of Antiseizure Medication Monotherapy for Major Malformations. Annals of Neurology. 12 pages.
- (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.
- (2022). Cesarean delivery in Norwegian nulliparous women with singleton cephalic term births, 1967–2020: a population-based study. BMC Pregnancy and Childbirth. 10 pages.
- (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.
- (2022). Amniotic band syndrome and limb body wall complex in Europe 1980–2019. American Journal of Medical Genetics. Part A. 12 pages.
- (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.
- (2021). Prevention of Neural Tube Defects in Europe: A Public Health Failure. Frontiers in pediatrics. 1-9.
- (2021). Male to female ratios in autism spectrum disorders by age, intellectual disability and attention-deficit/hyperactivity disorder. Acta Psychiatrica Scandinavica. 635-646.
- (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.
- (2021). Linking a European cohort of children born with congenital anomalies to vital statistics and mortality records: A EUROlinkCAT study. PLOS ONE. 15 pages.
- (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.
- (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.
- (2021). Epidemiology of Pierre-Robin sequence in Europe: A population-based EUROCAT study. Paediatric and Perinatal Epidemiology. 530-539.
- (2021). Do Genetic Variants Modify the Effect of Smoking on Risk of Preeclampsia in Pregnancy? American Journal of Perinatology.
- (2021). Clustering Longitudinal Blood Pressure Trajectories to Examine Heterogeneity in Outcomes among Preeclampsia Cases and Controls. Hypertension. 2034-2044.
- (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.
- (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.
- (2020). Sex differences in parent–offspring recurrence of attention-deficit/hyperactivity disorder. Journal of Child Psychology and Psychiatry. 1-9.
- (2020). Multilevel analyses of related public health indicators: The European Surveillance of Congenital Anomalies (EUROCAT) Public Health Indicators. Paediatric and Perinatal Epidemiology. 122-129.
- (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.
- (2020). Maternal risk factors for the VACTERL association: A EUROCAT case-control study. Birth Defects Research. 688-698.
- (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.
- (2020). Heart failure in women with hypertensive disorders of pregnancy: Insights from the cardiovascular disease in Norway project. Hypertension. 1506-1513.
- (2020). Genetic predisposition to hypertension is associated with preeclampsia in European and Central Asian women. Nature Communications. 1-14.
- (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.
- (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.
- (2020). Attention-deficit/hyperactivity disorder and smoking habits in pregnant women. PLOS ONE. 13 pages.
- (2019). Spectrum of congenital anomalies among VACTERL cases: a EUROCAT population-based study. Pediatric Research. 1-9.
- (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.
- (2019). Methadone, Pierre Robin sequence and other congenital anomalies: case–control study. Archives of Disease in Childhood: Fetal and Neonatal Edition. 151-157.
- (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.
- (2019). Epidemiology of limb reduction defects as registered in the Medical Birth Registry of Norway, 1970-2016: Population based study. PLOS ONE. 1-17.
- (2019). Epidemiology of congenital cerebral anomalies in Europe: a multicentre, population-based EUROCAT study. Archives of Disease in Childhood. 1181-1187.
- (2019). Epidemiology of achondroplasia: A population-based study in Europe. American Journal of Medical Genetics. Part A. 1791-1798.
- (2019). Epidemiology of Dandy-Walker malformation in Europe: A EUROCAT population-based registry study. Neuroepidemiology. 169-179.
- (2019). Congenital clubfoot in Europe: A population-based study. American Journal of Medical Genetics. Part A. 595-601.
- (2018). Trends in prescription drug use during pregnancy and postpartum in Norway, 2005 to 2015. Pharmacoepidemiology and Drug Safety. 995-1004.
- (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.
- (2018). Risk of eclampsia or HELLP-syndrome by institution availability and place of delivery - A population-based cohort study. Pregnancy Hypertension. 1-8.
- (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.
- (2018). Metformin exposure in first trimester of pregnancy and risk of all or specific congenital anomalies: exploratory case-control study. The BMJ. 9 pages.
- (2018). Epidemiology of septo-optic dysplasia with focus on prevalence and maternal age? A EUROCAT study. European Journal of Medical Genetics. 483-488.
- (2018). Common psychiatric and metabolic comorbidity of adult attention-deficit/hyperactivity disorder: A population-based cross-sectional study. PLOS ONE. 12 pages.
- (2018). Can oxytocin augmentation modify the risk of epidural analgesia by maternal age in cesarean sections? Acta Obstetricia et Gynecologica Scandinavica. 872-879.
- (2018). A Family Based Study of Carbon Monoxide and Nitric Oxide Signalling Genes and Preeclampsia. Paediatric and Perinatal Epidemiology. 1-12.
- (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.
- (2017). Preterm births and use of medication in early adulthood: a population-based registry study. Pharmacoepidemiology and Drug Safety. 742-751.
- (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.
- (2017). Mode of first delivery and severe maternal complications in the subsequent pregnancy. Acta Obstetricia et Gynecologica Scandinavica. 1053-1062.
- (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.
- (2017). Gestational diabetes mellitus and interpregnancy weight change: A population-based cohort study. PLoS Medicine. 19 pages.
- (2017). Gender differences in psychiatric comorbidity: a population-based study of 40 000 adults with attention deficit hyperactivity disorder. Acta Psychiatrica Scandinavica. 176-186.
- (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.
- (2017). Congenital anomalies and the severity of impairments for cerebral palsy. Developmental Medicine & Child Neurology. 1174-1180.
- (2017). Chronic hypertension in women after perinatal exposure to preeclampsia, being born small for gestational age or preterm. Paediatric and Perinatal Epidemiology. 89-98.
- (2017). Cesarean section trends in the Nordic Countries - a comparative analysis with the Robson classification. Acta Obstetricia et Gynecologica Scandinavica. 607-616.
- (2017). Beta-Blocker Use in Pregnancy and Risk of Specific Congenital Anomalies: A European Case-Malformed Control Study. Drug Safety. 13 pages.
- (2017). Attention-deficit/hyperactivity disorder in offspring of mothers with inflammatory and immune system diseases. Biological Psychiatry. 452-459.
- (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.
- (2017). Association between pregravid physical activity and family history of stroke and risk of stillbirth: Population-based cohort study. BMJ Open. 1-8.
- (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.
- (2016). Variations in multiple birth rates and impact on perinatal outcomes in Europe. PLOS ONE.
- (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.
- (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.
- (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.
- (2016). Prevalence of microcephaly in Europe: Population based study. The BMJ. 6 pages.
- (2016). Prescribing of antidiabetic medicines before, during and after pregnancy: A study in seven European regions. PLOS ONE. 17 pages.
- (2016). Preconception cardiovascular risk factor differences between gestational hypertension and preeclampsia: Cohort Norway study. Hypertension. 1173-1180.
- (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.
- (2016). Maternal smoking status in successive pregnancies and risk of having a small for gestational age infant. Paediatric and Perinatal Epidemiology. 21-28.
- (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.
- (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.
- (2016). EUROmediCAT signal detection: an evaluation of selected congenital anomaly-medication associations. British Journal of Clinical Pharmacology. 1094-1109.
- (2016). EUROmediCAT signal detection: a systematic method for identifying potential teratogenic medication. British Journal of Clinical Pharmacology. 1110-1122.
- (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.
- (2016). Asthma medication prescribing before, during and after pregnancy: a study in seven European regions. BMJ Open. 13 pages.
- (2016). Adult ADHD and Comorbid Somatic Disease: A Systematic Literature Review. Journal of Attention Disorders. 203-228.
- (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.
- (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.
- (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.
- (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.
- (2015). Risk of fetal death with preeclampsia. Obstetrics and Gynecology. 628-635.
- (2015). Preeclampsia in pregnancy and later use of antihypertensive drugs. European Journal of Epidemiology (EJE). 501-508.
- (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.
- (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.
- (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.
- (2015). Neonatal outcome of singleton term breech deliveries in Norway from 1991 to 2011. Acta Obstetricia et Gynecologica Scandinavica. 997-1004.
- (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.
- (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.
- (2015). Long term trends in prevalence of neural tube defects in Europe: population based study. The BMJ. 6 pages.
- (2015). Improving information on maternal medication use by linking prescription data to congenital anomaly registers: a EUROmediCAT study. Drug Safety. 1083-1093.
- (2015). Folic acid supplements and risk of oral clefts in the newborn: A population-based study. British Journal of Nutrition. 1456-1463.
- (2015). Epidemiology of hypospadias in Europe: a registry-based study. World Journal of Urology. 2159-2167.
- (2015). Epidemiology of congenital diaphragmatic hernia in Europe: A register-based study. Archives of Disease in Childhood: Fetal and Neonatal Edition. F137-F144.
- (2015). Emergency peripartum hysterectomy: Results from the prospective Nordic Obstetric Surveillance Study (NOSS). Acta Obstetricia et Gynecologica Scandinavica. 745-754.
- (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.
- (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.
- (2015). Can 'early programming' be partly explained by smoking? Results from a prospective, population-based cohort study. Paediatric and Perinatal Epidemiology. 50-59.
- (2015). Association of Women's Reproductive History with Long-term Mortality and Effect of Socioeconomic Factors. Obstetrics and Gynecology. 1181-1187.
- (2015). Antiepileptic drug prescribing before, during and after pregnancy: a study in seven European regions. Pharmacoepidemiology and Drug Safety. 1144-1154.
- (2014). Varying gestational age patterns in cesarean delivery: An international comparison. BMC Pregnancy and Childbirth. 9 pages.
- (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.
- (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.
- (2014). Population-based trends in pregnancy hypertension and pre-eclampsia: an international comparative study. BMJ Open.
- (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.
- (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.
- (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.
- (2014). Hirschsprung's disease prevalence in Europe: A register based study. Birth Defects Research Part A: Clinical and Molecular Teratology. 695-702.
- (2014). Healthcare databases in Europe for studying medicine use and safety during pregnancy. Pharmacoepidemiology and Drug Safety. 586-594.
- (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.
- (2014). Availability and access in modern obstetric care: a retrospective population-based study. BJOG: An International Journal of Obstetrics and Gynaecology. 290-299.
- (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.
- (2013). Validity of the diagnosis of pre-eclampsia in the Medical Birth Registry of Norway. Acta Obstetricia et Gynecologica Scandinavica. 943-950.
- (2013). Validity of pre-eclampsia diagnosis in Medical Birth Registry of Norway. Acta Obstetricia et Gynecologica Scandinavica. 243-950.
- (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.
- (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.
- (2013). Recent Decrease in the Prevalence of Congenital Heart Defects in Europe. Journal of Pediatrics. 108-U135.
- (2013). Pre-pregnant body mass index, gestational weight gain and the risk of operative delivery. Acta Obstetricia et Gynecologica Scandinavica. 809-815.
- (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.
- (2013). Birth outcomes among offspring of adult cancer survivors: A population-based study. International Journal of Cancer. 2696-2705.
- (2012). Spectrum of congenital anomalies in pregnancies with pregestational diabetes. Birth Defects Research Part A: Clinical and Molecular Teratology. 134-140.
- (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.
- (2012). Pre- and perinatal risk factors in adults with attention-deficit/hyperactivity disorder. Biological Psychiatry. 474-481.
- (2012). Maternal age and elective cesarean section in a low-risk population. Acta Obstetricia et Gynecologica Scandinavica. 816-823.
- (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.
- (2012). Cardiovascular mortality after pre-eclampsia in one child mothers: prospective, population based cohort study. BMJ. British Medical Journal. 10 pages.
- (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.
- (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.
- (2010). Valproic acid monotherapy in pregnancy and major congenital malformations. New England Journal of Medicine. 2185-2193.
- (2010). Recurrence of stillbirth in sibships: population-based cohort study. American Journal of Epidemiology. 1123-1130.
- (2010). Mothers' and fathers' birth characteristics and perinatal mortality in their offspring: a population-based cohort study. Paediatric and Perinatal Epidemiology. 282-292.
- (2010). Intrauterine exposure to carbamazepine and specific congenital malformations: systematic review and case-control study. BMJ (Clinical Research Edition). 7 pages.
- (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.
- (2009). Self-selection and bias in a large prospective pregnancy cohort in Norway. Paediatric and Perinatal Epidemiology. 597-608.
- (2009). Prior adverse pregnancy outcome and the risk of stillbirth. Obstetrics and Gynecology. 1259-1270.
- (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.
- (2008). Registration of Down syndrome in the Medical Birth Registry of Norway: Validity and time trends. Acta Obstetricia et Gynecologica Scandinavica. 824-830.
- (2008). Parenthood probability and pregnancy outcome in patients with a cancer diagnosis during adolescence and young adulthood. Human Reproduction. 178-186.
- (2008). Outcomes of pregnancies following a birth with major birth defects: A population based study. Early Human Development. 651-657.
- (2008). Maternal and paternal contribution to intergenerational recurrence of breech delivery: population based cohort study. BMJ. British Medical Journal. 872-876.
- (2007). Selective fertility – the examples of perinatal death and preeclampsia. Norsk Epidemiologi. 175-180.
- (2007). Reduced fertility after cesarean delivery - A maternal choice. Obstetrics and Gynecology. 1256-1263.
- (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.
- (2005). Twenty years experience with semen cryopreservation in testicular cancer patients: who needs it? European Urology. 779-785.
- (2005). Twenty years experience with semen cryopreservation in testicular cancer patients: who needs it? European Urology. 779-785.
- (2005). Parenthood in survivors after adulthood cancer and perinatal health in their offspring. Journal of the National Cancer Institute. Monographs. 77-82.
- (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.
- (2000). Infant's length at birth: an independent effect on perinatal mortality. Acta Obstetricia et Gynecologica Scandinavica. 459-464.
- (1994). Signs of subclinical eating disorders in teenage girls. Scandinavian Journal of Primary Health Care. 197-203.
- (2022). Cancer risk in individuals with siblings with major birth defects: A large Nordic population-based case-control study.
- (2021). Childhood cancer risk among individuals with major birth defects: A Nordic collaborative study.
- (2020). Cancer risk in individuals with major birth defects: A large Nordic population-based case-control study among children, adolescents, and adults.
- (2019). Parent-offspring recurrence of attention-deficit/hyperactivity disorder.
- (2019). Parent-offspring recurrence of ADHD.
- (2018). Psychiatric comorbidity and genetic correlations provide new insights into differences between ADHD and autism .
- (2018). Psychiatric comorbidity and genetic correlations provide new insights into differences between ADHD and autism .
- (2018). Psychiatric comorbidities in adults with ADHD and/or autism: Can patterns of comorbidities together with genetics add knowledge on etiologic relations? .
- (2017). Psychiatric comorbidities in male and female adults with ADHD.
- (2017). Maternal age, epidural analgesia and oxytocin augmentation as risk factors for cesarean delivery in nulliparous women in spontaneous labor at term.
- (2017). Gender Differences in Psychiatric Comorbidity: A Population-based Study of 40,000 Adults with Attention-Deficit/Hyperactivity Disorder.
- (2014). Cesarean delivery in induced women - Nordic countries 2000-2011.
- (2014). Caesaren delivery inNordic countries 1991-2011: a registry study using the Robson groups.
- (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.
- (2013). Low birth weight babies are more often smokers as adults. American Journal of Epidemiology. S77-S77.
- (2013). Availability and access in modern obstetric care: a retrospective population-based cohort study. BJOG: An International Journal of Obstetrics and Gynaecology. 412-413.
- (2012). Risk of preeclampsia in pregnancies from assisted reproductive technologies. Acta Obstetricia et Gynecologica Scandinavica. 132-132.
- (2012). Nordic Obstetric Surveillance Study (NOSS). Preliminary results and perspectives. Acta Obstetricia et Gynecologica Scandinavica. 45-46.
- (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.
- (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.
- (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.
- (2008). Registration of Down's syndrome in the medical birth registry of Norway; validity and time trends. European Journal of Neurology. 348-349.
- (2007). Recurrence of stillbirth by gestational age. American Journal of Epidemiology. S27-S27.
- (2007). Preeclampsia and long-term maternal mortality. American Journal of Epidemiology. S27-S27.
- (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.
- (2018). Trends in congenital anomalies in Europe from 1980 to 2012. PLOS ONE. 18 pages.
- (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.
- (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