• Association of Assisted Reproductive Technology With Offspring Growth and Adiposity From Infancy to Early Adulthood 

      Elhakeem, Ahmed; Taylor, Amy E.; Inskip, Hazel M.; Huang, Jonathan Yinhao; Tafflet, Muriel; Vinther, Johan L.; Asta, Federica; Erkamp, Jan S.; Gagliardi, Luigi; Guerlich, Kathrin; Halliday, Jane; Harskamp-van Ginkel, Margreet W.; He, Jian-Rong; Jaddoe, Vincent W. V.; Lewis, Sharon; Maher, Gillian M.; Manios, Yannis; Mansell, Toby; McCarthy, Fergus; McDonald, Sheila W.; Medda, Emanuela; Nisticò, Lorenza; Pinot de Moira, Angela; Popovic, Maja; Reiss, Irwin K. M.; Rodrigues, Carina; Salika, Theodosia; Smith, Ash; Stazi, Maria A.; Walker, Caroline; Wu, Muci; Åsvold, Bjørn Olav; Henrique, Barros; Brescianini, Sonia; Burgner, David; Chan, Jerry K. Y.; Charles, Marie-Aline; Eriksson, Johan G.; Gaillard, Romy; Grote, Veit; Håberg, Siri Eldevik; Heude, Barbara; Koletzko, Berthold; Morton, Susan; Moschonis, George; Murray, Deirdre; O'Mahony, Desmond; Porta, Daniela; Qiu, Xiu; Magnus, Maria Christine (Journal article; Peer reviewed, 2022)
    • Body mass index and subfertility: multivariable regression and Mendelian randomization analyses in the Norwegian Mother, Father and Child Cohort Study 

      Hernaez Camba, Alvaro; Rogne, Tormod; Skåra, Karoline Hansen; Håberg, Siri Eldevik; Page, Christian Magnus; Fraser, Abigail; Burgess, Stephen; Lawlor, Deborah A.; Magnus, Maria Christine (Peer reviewed; Journal article, 2021)
      STUDY QUESTION What is the association between BMI and subfertility? SUMMARY ANSWER We observed a J-shaped relationship between BMI and subfertility in both sexes, when using both a standard multivariable regression ...
    • The challenges of selective fertility and carryover effects in within-sibship analyses: the effect of assisted reproductive technology on perinatal mortality as an example 

      Westvik-Johari, Kjersti; Håberg, Siri Eldevik; Lawlor, Deborah A.; Romundstad, Liv Bente Bergem; Bergh, Christina; Wennerholm, Ulla-Britt; Gissler, Mika; Henningsen, Anna-Karina A.; Tiitinen, Aila; Pinborg, Anja; Opdahl, Signe (Peer reviewed; Journal article, 2023)
      Background Within-sibship analyses show lower perinatal mortality after assisted reproductive technology (ART) compared with natural conception (NC), a finding that appears biologically unlikely. We investigated whether ...
    • Growth in children conceived by ART 

      Magnus, Maria Christine; Wilcox, Allen J.; Fadum, Elin Anita; Gjessing, Håkon; Opdahl, Signe; Juliusson, Petur Benedikt; Romundstad, Liv Bente; Håberg, Siri Eldevik (Peer reviewed; Journal article, 2021)
      STUDY QUESTION: Is the growth pattern of children conceived by ART different compared to naturally conceived children. SUMMARY ANSWER: Both ART and underlying parental subfertility may contribute to differences in early ...
    • Influenza vaccination and risk for cardiovascular events: a nationwide self-controlled case series study 

      Sen, Abhijit; Bakken, Inger Johanne Landsjøåsen; Govatsmark, Ragna Elise Støre; Varmdal, Torunn; Bønaa, Kaare Harald; Mukamal, Kenneth Jay; Håberg, Siri Eldevik; Janszky, Imre (Peer reviewed; Journal article, 2021)
      Background US and European guidelines diverge on whether to vaccinate adults who are not at high risk for cardiovascular events against influenza. Here, we investigated the associations between influenza vaccination and ...
    • Long-term cardiometabolic health in people born after assisted reproductive technology: a multi-cohort analysis 

      Elhakeem, Ahmed; Taylor, Amy E.; Inskip, Hazel M.; Huang, Jonathan Yinhao; Mansell, Toby; Rodrigues, Carina; Asta, Federica; Blaauwendraad, Sophia M.; Håberg, Siri Eldevik; Halliday, Jane; Harskamp-van Ginkel, Margreet W.; He, Jian-Rong; Jaddoe, Vincent W.V.; Lewis, Sharon; Maher, Gillian M.; Manios, Yannis; McCarthy, Fergus P.; Reiss, Irwin K.M.; Rusconi, Franca; Salika, Theodosia; Tafflet, Muriel; Qiu, Xiu; Åsvold, Bjørn Olav; Burgner, David; Chan, Jerry K.Y.; Gagliardi, Luigi; Gaillard, Romy; Heude, Barbara; Magnus, Maria Christine; Moschonis, George; Murray, Deirdre; Nelson, Scott M; Porta, Daniela; Saffery, Richard; Barros, Henrique; Eriksson, Johan G.; Vrijkotte, Tanja G.M.; Lawlor, Deborah A. (Journal article; Peer reviewed, 2023)
      Aims: To examine associations of assisted reproductive technology (ART) conception (vs. natural conception: NC) with offspring cardiometabolic health outcomes and whether these differ with age. Methods and results: Differences ...
    • Perinatal outcomes after assisted reproductive technology. Are adverse perinatal outcomes after assisted reproductive technology affected by mode of treatment or maternal factors? 

      Westvik-Johari, Kjersti (Doctoral theses at NTNU;2022:100, Doctoral thesis, 2022)
      Norsk sammendrag Perinatale utfall etter assistert befruktning. Er dårligere perinatal helse etter assistert befruktning et resultat av behandlingsmetode eller faktorer hos mor? Barn født etter assistert befruktning ...
    • A Pregnancy and Childhood Epigenetics Consortium (PACE) meta-analysis highlights potential relationships between birth order and neonatal blood DNA methylation 

      Li, Shaobo; Spitz, Natalia; Ghantous, Akram; Abrishamcar, Sarina; Reimann, Brigitte; Marques, Irene; Silver, Matt J.; Aguilar-Lacasaña, Sofía; Kitaba, Negusse; Rezwan, Faisal I.; Röder, Stefan; Sirignano, Lea; Tuhkanen, Johanna; Mancano, Giulia; Sharp, Gemma C.; Metayer, Catherine; Morimoto, Libby; Stein, Dan J.; Zar, Heather J.; Alfano, Rossella; Nawrot, Tim; Wang, Congrong; Kajantie, Eero Olavi; Keikkala, Elina; Mustaniemi, Sanna; Ronkainen, Justiina; Sebert, Sylvain; Silva, Wnurinham; Vääräsmäki, Marja; Jaddoe, Vincent W. V.; Bernstein, Robin M.; Prentice, Andrew M.; Cosin-Tomas, Marta; Dwyer, Terence; Håberg, Siri Eldevik; Herceg, Zdenko; Magnus, Maria Christine; Munthe-Kaas, Monica Cheng; Page, Christian Magnus; Völker, Maja; Gilles, Maria; Send, Tabea; Witt, Stephanie; Zillich, Lea; Gagliardi, Luigi; Richiardi, Lorenzo; Czamara, Darina; Räikkönen, Katri; Chatzi, Lida; Vafeiadi, Marina; Arshad, S. Hasan; Ewart, Susan; Plusquin, Michelle; Felix, Janine F.; Moore, Sophie E.; Vrijheid, Martine; Holloway, John W.; Karmaus, Wilfried; Herberth, Gunda; Zenclussen, Ana; Streit, Fabian; Lahti, Jari; Hüls, Anke; Hoang, Thanh T.; London, Stephanie J.; Wiemels, Joseph L. (Peer reviewed; Journal article, 2024)
      Higher birth order is associated with altered risk of many disease states. Changes in placentation and exposures to in utero growth factors with successive pregnancies may impact later life disease risk via persistent DNA ...
    • Risk of stillbirth and neonatal death in singletons born after fresh and frozen embryo transfer: cohort study from the Committee of Nordic Assisted Reproduction Technology and Safety 

      Westvik-Johari, Kjersti; Lawlor, Deborah; Romundstad, Liv Bente Bergem; Bergh, Christina; Wennerholm, Ulla-Britt; Gissler, Mika; Henningsen, Anna-Karina Aaris; Håberg, Siri Eldevik; Tiitinen, Aila; Spangmose, Anne Lærke; Pinborg, Anja Bisgaard; Opdahl, Signe (Peer reviewed; Journal article, 2022)
      Main Outcome Measure(s) Stillbirth (fetal death before and during delivery) and neonatal death (live born with death 0–27 days postpartum). Result(s) Overall, 17,123 (0.37%) singletons were stillborn and 7,685 (0.17%) ...
    • Risk of stroke the year following a delivery after using assisted reproductive technologies 

      Magnus, Maria Christine; Håberg, Siri Eldevik; Rönö, Kristiina; Romundstad, Liv Bente Bergem; Bergh, Christina; Spangmose, Anne Lærke; Pinborg, Anja; Gissler, Mika; Wennerholm, Ulla-Britt; Opdahl, Signe (Peer reviewed; Journal article, 2023)
      Background Studies indicate that individuals who deliver after assisted reproductive technologies (ART) may have an increased risk of cardiovascular disease (CVD). A recent large study from the U.S. showed a higher risk ...
    • Separating parental and treatment contributions to perinatal health after fresh and frozen embryo transfer in assisted reproduction: A cohort study with within-sibship analysis 

      Westvik-Johari, Kjersti; Romundstad, Liv Bente; Lawlor, Deborah A.; Bergh, Christina; Gissler, Mika; Henningsen, Anna-Karina A.; Håberg, Siri Eldevik; Wennerholm, Ulla-Britt; Tiitinen, Aila; Pinborg, Anja; Opdahl, Signe (Peer reviewed; Journal article, 2021)
      Background Compared to naturally conceived children, adverse perinatal outcomes are more common among children born after assisted reproductive technology with fresh embryo transfer (fresh-ET) or frozen embryo transfer ...
    • Vanishing twin syndrome among ART singletons and pregnancy outcomes 

      Magnus, Maria Christine; Ghaderi, Sara; Morken, Nils-Halvdan; Magnus, Per; Romundstad, Liv Bente Bergem; Skjaerven, Rolv; Wilcox, Allen J; Håberg, Siri Eldevik (Journal article; Peer reviewed, 2017)
      STUDY QUESTION Among babies born by ART, do singleton survivors of a vanishing twin have lower birth weight than other singletons? SUMMARY ANSWER Vanishing twin syndrome (VTS) was associated with lower birth weight among ...