• Adult ADHD and Comorbid Somatic Disease: A Systematic Literature Review 

      Instanes, Johanne Telnes; Klungsøyr, Kari; Halmøy, Anne; Fasmer, Ole Bernt; Haavik, Jan (Peer reviewed; Journal article, 2016)
      Objective: To systematically review, synthesize, and appraise available evidence, connecting adult ADHD (aADHD) with somatic disease. Method: Embase, Psychinfo, and Medline databases were searched for studies published ...
    • Association between pregravid physical activity and family history of stroke and risk of stillbirth: Population-based cohort study 

      Egeland, Grace M.; Tell, Grethe S.; Næss, Øyvind; Igland, Jannicke; Klungsøyr, Kari (Peer reviewed; Journal article, 2017-08-11)
      Objectives: To evaluate whether family history of disease and pregravid lifestyle and cardiovascular risk factors are associated with subsequent stillbirth delivery. Design: Prepregnancy cohort study. Setting: Cohort Norway ...
    • Association of sweetened carbonated beverage consumption during pregnancy and ADHD symptoms in the ofspring: a study from the Norwegian Mother, Father and Child Cohort Study (MoBa) 

      Kvalvik, Liv Grimstvedt; Klungsøyr, Kari; Igland, Jannicke; Caspersen, Ida Henriette; Brantsæter, Anne Lise; Solberg, Berit Skretting; Hartman, Catharina; Schweren, Lizanne Johanna Stephanie; Larsson, Henrik; Li, Lin; Forthun, Ingeborg; Johansson, Stefan; Vasquez, Alejandro Arias; Haavik, Jan (Journal article; Peer reviewed, 2022)
      Purpose Intrauterine exposures influence offspring health and development. Here we investigated maternal intake of sweetened carbonated beverages (SCB) during pregnancy and its association with ADHD symptoms in the ...
    • Associations between attention-deficit/hyperactivity disorder and autoimmune diseases are modified by sex: a population-based cross-sectional study 

      Hegvik, Tor-Arne; Instanes, Johanne Telnes; Haavik, Jan; Klungsøyr, Kari; Engeland, Anders (Peer reviewed; Journal article, 2018-05)
      Several studies have demonstrated associations between neuropsychiatric disorders, such as attention-deficit/hyperactivity disorder (ADHD), and the immune system, including autoimmune diseases. Since ADHD and many autoimmune ...
    • Asthma medication prescribing before, during and after pregnancy: a study in seven European regions 

      Charlton, Rachel A; Pierini, Anna; Klungsøyr, Kari; Neville, Amanda J; Jordan, Susan; de Jong-van den Berg, Lolkje T W; Thayer, Daniel; Bos, H Jens; Puccini, Aurora; Hansen, Anne V; Gini, Rosa; Engeland, Anders; Andersen, Anne-Marie Nybo; Dolk, Helen; Garne, Ester (Peer reviewed; Journal article, 2016-01-19)
      Objectives: To explore utilisation patterns of asthma medication before, during and after pregnancy as recorded in seven European population-based databases. Design: A descriptive drug utilisation study. Setting :7 electronic ...
    • Attention-deficit/hyperactivity disorder and smoking habits in pregnant women 

      Anderson, Anneli; Hegvik, Tor-Arne; Chen, Qi; Kvalvik, Liv Grimstvedt; Almqvist, Catarina; D'Onofrio, Brian M.; Hartman, Catharina A; Klungsøyr, Kari; Haavik, Jan; Tuvblad, Catherine; Larsson, Henrik (Journal article; Peer reviewed, 2020)
      Background Attention-deficit/hyperactivity disorder (ADHD) has been associated with an increased risk of tobacco smoking, and more difficulties with smoking cessation compared to non-ADHD individuals. Women with ADHD may ...
    • Attention-deficit/hyperactivity disorder in offspring of mothers with inflammatory and immune system diseases 

      Instanes, Johanne Telnes; Halmøy, Anne; Engeland, Anders; Haavik, Jan; Furu, Kari; Klungsøyr, Kari (Peer reviewed; Journal article, 2017-03)
      Background: Prenatal inflammatory mechanisms may play a role in the pathogenesis of psychiatric disorders and could be relevant for attention-deficit/hyperactivity disorder (ADHD). We investigated maternal chronic somatic ...
    • Availability and access in modern obstetric care: a retrospective population-based study 

      Engjom, Hilde Marie; Morken, Nils-Halvdan; Norheim, Ole Frithjof; Klungsøyr, Kari (Peer reviewed; Journal article, 2014)
      Objective: To assess the availability of obstetric institutions, the risk of unplanned delivery outside an institution and maternal morbidity in a national setting in which the number of institutions declined from 95 to ...
    • Can 'early programming' be partly explained by smoking? Results from a prospective, population-based cohort study 

      Kvalvik, Liv Grimstvedt; Skjaerven, Rolv; Klungsøyr, Kari; Vollset, Stein Emil; Haug, Kjell (Peer reviewed; Journal article, 2015-01)
      Background: Numerous studies have focused the association between low birthweight and later disease. Our objective was to study the association between birthweight and later adult smoking and thereby explore a possible ...
    • Cancer risk in individuals with major birth defects: large Nordic population based case-control study among children, adolescents, and adults 

      Daltveit, Dagrun Slettebø; Klungsøyr, Kari; Engeland, Anders; Ekbom, Anders; Gissler, Mika; Glimelius, Ingrid; Grotmol, Tom; Madanat-Harjuoja, Laura M.; Ording, Anne Gulbech; Sæther, Solbjørg Makalani Myrtveit; Sørensen, Henrik Toft; Troisi, Rebecca; Bjørge, Tone (Journal article; Peer reviewed, 2020)
      Objective To examine associations between birth defects and cancer from birth into adulthood. Design Population based nested case-control study. Setting Nationwide health registries in Denmark, Finland, Norway, ...
    • Cesarean delivery in Norwegian nulliparous women with singleton cephalic term births, 1967–2020: a population-based study 

      Sima, Yeneabeba; Skjaerven, Rolv; Kvalvik, Liv Grimstvedt; Morken, Nils-Halvdan; Klungsøyr, Kari; Sørbye, Linn Marie (Journal article; Peer reviewed, 2022)
      Background Nulliparous women contribute to increasing cesarean delivery in the Nordic countries and advanced maternal age has been suggested as responsible for rise in cesarean delivery rates in many developed countries. ...
    • Change in paternity, risk of placental abruption and confounding by birth interval: A population-based prospective cohort study in Norway, 1967-2009 

      Ananth, Cande V.; Skjaerven, Rolv; Klungsøyr, Kari (Peer reviewed; Journal article, 2015-02-10)
      Objectives: We examined abruption risk in relation to change in paternity, and evaluated if birth interval confounds this association. Setting: Population-based study of singleton births in Norway between 1967 and 2009. ...
    • Common psychiatric and metabolic comorbidity of adult attention-deficit/hyperactivity disorder: A population-based cross-sectional study 

      Chen, Qi; Hartman, Catharina A; Haavik, Jan; Harro, Jaanus; Klungsøyr, Kari; Hegvik, Tor-Arne; Wanders, Rob; Ottosen, Cæcilie; Dalsgaard, Søren; Faraone, Stephen V.; Larsson, Henrik (Peer reviewed; Journal article, 2018-09-26)
      Attention-deficit/hyperactivity disorder (ADHD) is often comorbid with other psychiatric conditions in adults. Yet, less is known about its relationship with common metabolic disorders and how sex and ageing affect the ...
    • Congenital clubfoot in Europe: A population-based study 

      Wang, Hao; Barisic, Ingeborg; Loane, Maria; Addor, Marie-Claude; Bailey, Linda M.; Gatt, Miriam; Klungsøyr, Kari; Mokoroa, Olatz; Nelen, Vera; Neville, Amanda J.; O'Mahony, Mary; Pierini, Anna; Rissmann, Anke; Verellen-Dumoulin, Christine; de Walle, Hermien E.K.; Wiesel, Awi; Wisniewska, Katarzyna; de Jong van den Berg, Lolkje T.W.; Dolk, Helen; Khoshnood, Babak; Garne, Ester (Peer reviewed; Journal article, 2019)
      We aimed to assess prevalence, birth outcome, associated anomalies and prenatal diagnosis of congenital clubfoot in Europe using data from the EUROCAT network, and to validate the recording of congenital clubfoot as a major ...
    • COVID-19 in pregnancy—characteristics and outcomes of pregnant women admitted to hospital because of SARS-CoV-2 infection in the Nordic countries 

      Engjom, Hilde Marie; Aabakke, Anna J. M.; Klungsøyr, Kari; Svanvik, Teresia; Äyräs, Outi; Jonasdottir, Eva; Thurn, Lars; Jones, Elin; Pettersson, Karin; Nyfløt, Lill Trine; Al-Zirqi, Iqbal Ahmad Abdelwahab; Vangen, Siri; Juliusson, Pétur Benedikt; Källén, Karin; Gissler, Mika; Krebs, Lone (Journal article; Peer reviewed, 2021)
      Introduction Population-based studies about the consequences of SARS-CoV-2 infection (COVID-19) in pregnancy are few and have limited generalizability to the Nordic population and healthcare systems. Material and ...
    • Do Genetic Variants Modify the Effect of Smoking on Risk of Preeclampsia in Pregnancy? 

      Bauer, Anna E.; Avery, Christy L.; Shi, Min; Weinberg, Clarice R.; Olshan, Andrew F.; Harmon, Quaker E.; Luo, Jingchun; Yang, Jenny; Manuck, Tracy; Wu, Michael C.; Klungsøyr, Kari; Trogstad, Lill; Magnus, Per Minor; Engel, Stephanie M. (Journal article; Peer reviewed, 2021)
      Objective Maternal smoking is associated with as much as a 50% reduced risk of preeclampsia, despite increasing risk of other poor pregnancy outcomes that often co-occur with preeclampsia, such as preterm birth and fetal ...
    • 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 

      Bjellmo, Solveig; Andersen, Guro Lillemoen; Hjelle, Sissel; Klungsøyr, Kari; Krebs, Lone; Lydersen, Stian; Romundstad, Pål Richard; Vik, Torstein (Journal article; Peer reviewed, 2020)
      Objective To explore if newborns in the second pregnancy following a previous caesarean delivery (CD) have higher risk of perinatal mortality or cerebral palsy than newborns in pregnancies following a previous vaginal ...
    • Elective cesarean section or not? Maternal age and risk of adverse outcomes at term: a population-based registry study of low-risk primiparous women 

      Herstad, Lina; Klungsøyr, Kari; Skjaerven, Rolv; Tanbo, Tom Gunnar; Forsen, Lisa; Åbyholm, Thomas; Vangen, Siri (Peer reviewed; Journal article, 2016-08-17)
      Background Maternal age at delivery and cesarean section rates are increasing. In older women, the decision on delivery mode may be influenced by a reported increased risk of surgical interventions during labor and ...
    • Epidemiology of congenital cerebral anomalies in Europe: a multicentre, population-based EUROCAT study 

      Morris, Joan K.; Wellesley, Diana G.; Barisic, Ingeborg; Addor, Marie-Claude; Bergman, Jorieke E. H.; Braz, Paula; Cavero-Carbonell, Clara; Draper, Elizabeth S.; Gatt, Miriam; Haeusler, Martin; Klungsøyr, Kari; Kurinczuk, Jennifer J.; Lelong, Natalie; Luyt, Karen; Lynch, Catherine; O'Mahony, Mary T.; Mokoroa, Olatz; Nelen, Vera; Neville, Amanda J.; Pierini, Anna; Randrianaivo, Hanitra; Rankin, Judith; Rissmann, Anke; Rouget, Florence; Schaub, Bruno; Tucker, David F.; Verellen-Dumoulin, Christine; Wiesel, Awi; Zymak-Zakutnia, Natalia; Lanzoni, Monica; Garne, Ester (Peer reviewed; Journal article, 2019)
      Objectives: To describe the epidemiology and geographical differences in prevalence of congenital cerebral anomalies in Europe. Design and setting: Congenital cerebral anomalies (International Classification of Diseases, ...
    • Epidemiology of Dandy-Walker malformation in Europe: A EUROCAT population-based registry study 

      Santoro, Michele; Coi, Alessio; Barišić, Ingeborg; Garne, Ester; Addor, Marie-Claude; Bergman, Jorieke E.H.; Bianchi, Fabrizio; Boban, Ljubica; Braz, Paula; Cavero-Carbonell, Clara; Gatt, Miriam; Haeusler, Martin; Kinsner-Ovaskainen, Agnieszka; Klungsøyr, Kari; Kurinczuk, Jennifer J.; Lelong, Nathalie; Luyt, Karen; Materna-Kiryluk, Anna; Mokoroa, Olatz; Mullaney, Carmel; Nelen, Vera; Neville, Amanda Julie; O'Mahony, Mary T.; Perthus, Isabelle; Randrianaivo, Hanitra; Rankin, Judith; Rissmann, Anke; Rouget, Florence; Schaub, Bruno; Tucker, David; Wellesley, Diana; Yevtushok, Lyubov; Pierini, Anna (Peer reviewed; Journal article, 2019)
      Background: Dandy-Walker (DW) malformation is a rare and severe congenital anomaly of the posterior fossa affecting the development of the cerebellum and the fourth ventricle. Objective: The aim of this study was to ...