Blar i Bergen Open Research Archive på forfatter "Morken, Nils-Halvdan"
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Pregestational maternal risk factors for preterm and term preeclampsia: A population-based cohort study
Sande, Anne Kvie; Dalen, Ingvild; Torkildsen, Erik Andreas; Sande, Ragnar; Morken, Nils-Halvdan (Journal article; Peer reviewed, 2023)Introduction Most studies on factors affecting the risk of preeclampsia have not separated preterm from term preeclampsia, and we still know little about whether the predisposing conditions have a differentiated effect ... -
Pregnancy complications in last pregnancy and mothers’ long-term cardiovascular mortality: does the relation differ from that of complications in first pregnancy? A population-based study
Seid, Abdu Kedir; Morken, Nils-Halvdan; Klungsøyr, Kari; Kvalvik, Liv Grimstvedt; Sørbye, Linn Marie; Vatten, Lars Johan; Skjaerven, Rolv (Journal article; Peer reviewed, 2023)Background Women who experience complications in first pregnancy are at increased risk of cardiovascular disease (CVD) later in life. Little corresponding knowledge is available for complications in later pregnancies. ... -
Quantitative User Data From a Chatbot Developed for Women With Gestational Diabetes Mellitus: Observational Study
Sagstad, Mari Haaland; Morken, Nils-Halvdan; Lund, Agnethe; Dingsør, Linn Janicke; Nilsen, Anne Britt Vika; Sørbye, Linn Marie (Journal article; Peer reviewed, 2022)Background: The rising prevalence of gestational diabetes mellitus (GDM) calls for the use of innovative methods to inform and empower these pregnant women. An information chatbot, Dina, was developed for women with GDM ... -
Reference population for international comparisons and time trend surveillance of preterm delivery proportions in three countries
Morken, Nils-Halvdan; Vogel, Ida; Kallen, Karin; Skjærven, Rolv; Langhoff-Roos, Jens; Kesmodel, Ulrik Schiøler; Jacobsson, Bo (Peer reviewed; Journal article, 2008-09-25)Background: International comparison and time trend surveillance of preterm delivery rates is complex. New techniques that could facilitate interpretation of such rates are needed. Methods: We studied all live births and ... -
The relationship between cesarean delivery and fecundability: a population-based cohort study
Sima, Yeneabeba Tilahun; Magnus, Maria Christine; Kvalvik, Liv Grimstvedt; Morken, Nils-Halvdan; Klungsøyr, Kari; Skjaerven, Rolv; Sørbye, Linn Marie (Journal article; Peer reviewed, 2023)Background: Previous studies have found that women who undergo cesarean delivery have fewer pregnancies. Cesarean delivery is also more common among women with lower fecundability. The potential role of cesarean delivery ... -
Risk of adverse pregnancy outcomes in twin- and singleton-born women: An inter-generational cohort study
Basnet, Prativa; Skjaerven, Rolv; Harmon, Quaker E.; Sørbye, Linn Marie; Morken, Nils-Halvdan; Singh, Aditi; Klungsøyr, Kari; Kvalvik, Liv Grimstvedt (Journal article; Peer reviewed, 2024)Objective To compare the risk of adverse pregnancy outcomes between twin-born and singleton-born women. We also evaluated whether in utero exposure to pre-eclampsia or preterm delivery affected adverse pregnancy outcomes ... -
Risk of miscarriage in women with psychiatric disorders
Magnus, Maria Christine; Havdahl, Alexandra; Morken, Nils-Halvdan; Wensaas, Knut-Arne; Wilcox, Allen J.; Håberg, Siri Eldevik (Journal article; Peer reviewed, 2021)Background Some psychiatric disorders have been associated with increased risk of miscarriage. However, there is a lack of studies considering a broader spectrum of psychiatric disorders to clarify the role of common as ... -
Risk of Subsequent Preeclampsia by Maternal Country of Birth: A Norwegian Population-Based Study
Mæland, Karolina Sofia; Morken, Nils-Halvdan; Schytt, Erica; Aasheim, Vigdis; Nilsen, Roy Miodini (Journal article; Peer reviewed, 2023)In this nationwide population-based study, we investigated the associations of preeclampsia in the first pregnancy with the risk of preeclampsia in the second pregnancy, by maternal country of birth using data from the ... -
Role of maternal age and pregnancy history in risk of miscarriage: prospective register based study
Magnus, Maria Christine; Wilcox, Allen J; Morken, Nils-Halvdan; Weinberg, Clarice R.; Håberg, Siri Eldevik (Peer reviewed; Journal article, 2019)Objectives: To estimate the burden of miscarriage in the Norwegian population and to evaluate the associations with maternal age and pregnancy history. Design: Prospective register based study. Setting: Medical Birth ... -
Tensions and interplay: A qualitative study of access to patient-centered birth counseling of maternal cesarean requests in Norway
Eide, Kristiane Tislevoll; Morken, Nils-Halvdan; Bærøe, Kristine (Journal article; Peer reviewed, 2020)Objective: This study aimed to explore women's access to patient-centered counseling for concerns initiating cesarean requests in absence of obstetric indications in pregnancy, and to identify tensions, barriers and ... -
Unveiling sex bias and adverse neonatal outcomes in ultrasound estimation of gestational age: A population-based cohort study
Einum, Anders; Sørbye, Linn Marie; Nilsen, Roy Miodini; Ebbing, Cathrine; Morken, Nils-Halvdan (Journal article; Peer reviewed, 2024)Background Gestational age estimation by second-trimester ultrasound biometry introduces systematic errors due to sex differences in early foetal growth, consequently increasing the risk of adverse neonatal outcomes. ... -
Use of antihistamines before or during pregnancy and risk of early-onset pre-eclampsia in allergic women: a population-based cohort study
Sande, Anne Kvie; Torkildsen, Erik Andreas; Sande, Ragnar; Dalen, Ingvild; Danielsson, Kim Christian; Morken, Nils-Halvdan (Journal article; Peer reviewed, 2022)Objective: We have previously found that allergy is a risk factor for early-onset pre-eclampsia. The aim of this study was to assess the association between pregestational maternal use of antihistamines and early-onset ... -
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 (Peer reviewed; Journal article, 2017-11)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 ... -
Women's prepregnancy lipid levels and number of children: a Norwegian prospective population-based cohort study
Pirnat, Aleksandra; deRoo, Lisa; Skjaerven, Rolv; Morken, Nils-Halvdan (Peer reviewed; Journal article, 2018)Objective. To study prepregnancy serum lipid levels and the association with the number of children. Design. Prospective, population-based cohort. Setting. Linked data from the Cohort of Norway and the Medical Birth Registry ...