Blar i NTNU Open på forfatter "Bjørngaard, Johan Håkon"
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High school dropout and long-term sickness and disability in young adulthood: a prospective propensity score stratified cohort study (the Young-HUNT study)
De Ridder, Karin; Pape, Kristine; Cuypers, Koenraad; Johnsen, Roar; Holmen, Turid Lingaas; Westin, Steinar; Bjørngaard, Johan Håkon (Journal article; Peer reviewed, 2013)Background: High school dropout and long-term sickness absence/disability pension in young adulthood are strongly associated. We investigated whether common risk factors in adolescence may confound this association. Methods: ... -
High volumes of recent surgical admissions, time to surgery, and 60-day mortality
Nilsen, Sara Marie; Asheim, Andreas; Carlsen, Fredrik; Anthun, Kjartan Sarheim; Johnsen, Lars Gunnar; Vatten, Lars Johan; Bjørngaard, Johan Håkon (Peer reviewed; Journal article, 2021)Few studies have investigated potential consequences of strained surgical resources. The aim of this cohort study was to assess whether a high proportion of concurrent acute surgical admissions, tying up hospital surgical ... -
High ward occupancy, bedspacing, and 60 day mortality for patients with myocardial infarction, stroke, and heart failure
Asheim, Andreas; Nilsen, Sara Marie; Aam, Stina; Anthun, Kjartan Sarheim; Carlsen, Fredrik; Janszky, Imre; Vatten, Lars Johan; Bjørngaard, Johan Håkon (Journal article; Peer reviewed, 2022)Abstract Aims To study the consequences of crowded wards among patients with cardiovascular disease. Methods and results This is a cohort study among 201 801 patients with 258 807 admissions who were acutely admitted for ... -
Hospitals' Discharge Tendency and Risk of Death - An Analysis of 60,000 Norwegian Hip Fracture Patients
Nilsen, Sara Marie; Bjørngaard, Johan Håkon; Carlsen, Fredrik; Anthun, Kjartan Sarheim; Johnsen, Lars Gunnar; Vatten, Lars Johan; Asheim, Andreas (Peer reviewed; Journal article, 2020)Purpose: A reduction in the length of hospital stay may threaten patient safety. This study aimed to estimate the effect of organizational pressure to discharge on 60-day mortality among hip fracture patients. Patients ... -
How do busy hospital circumstances affect mortality and readmission within 60 days: A cohort study of 680 000 acute admissions in Norway
Nilsen, Sara Marie; Asheim, Andreas; Carlsen, Fredrik; Anthun, Kjartan Sarheim; Vatten, Lars Johan; Aam, Stina; Davies, Neil Martin; Bjørngaard, Johan Håkon (Peer reviewed; Journal article, 2022)Objective To study mortality and readmissions for older patients admitted during more and less busy hospital circumstances. Design Cohort study where we identified patients that were admitted to the same hospital, ... -
How does general practitioner discontinuity affect healthcare utilisation? An observational cohort study of 2.4 million Norwegians 2007-2017
Skarshaug, Lena Janita; Kaspersen, Silje Lill; Bjørngaard, Johan Håkon; Pape, Kristine (Peer reviewed; Journal article, 2021)Objectives Patients may benefit from continuity of care by a personal physician general practitioner (GP), but there are few studies on consequences of a break in continuity of GP. Investigate how a sudden discontinuity ... -
Hypertension in Pregnancy and Offspring Cardiovascular Risk in Young Adulthood: Prospective and Sibling Studies in the HUNT Study (Nord-Trøndelag Health Study) in Norway
Alsnes, Ingvild Vatten; Vatten, Lars Johan; Fraser, Abigail; Bjørngaard, Johan Håkon; Rich-Edwards, Janet Wilson; Romundstad, Pål Richard; Åsvold, Bjørn Olav (Journal article; Peer reviewed, 2017)Women with hypertensive disorders in pregnancy are at increased lifetime risk for cardiovascular disease. We examined the offspring’s cardiovascular risk profile in young adulthood and their siblings’ cardiovascular risk ... -
Impact of altering referral threshold from out-of-hours primary care to hospital on patient safety and further health service use: a cohort study
Svedahl, Ellen Rabben; Pape, Kristine; Austad, Bjarne; Vie, Gunnhild Åberge; Anthun, Kjartan Sarheim; Carlsen, Fredrik; Davies, Neil Martin; Bjørngaard, Johan Håkon (Peer reviewed; Journal article, 2022)Objectives To estimate the impact of altering referral thresholds from out-of-hours services on older patients’ further use of health services and risk of death. Design Cohort study using patient data from primary and ... -
The impact of nurture on nature: Genetic propensity for obesity in adolescents and adults and the interplay between genes and the environment during the obesity epidemic: longitudinal findings from the Trøndelag Health Study (HUNT)
Brandkvist, Maria (Doctoral theses at NTNU;2020:395, Doctoral thesis, 2020)Summary Background Obesity has tripled worldwide since 1975 as environments are becoming more obesogenic. (1-3) The obesity epidemic is largely attributed to over-nutrition and sedentary behavior, both related to ... -
Increasing workload in Norwegian general practice – a qualitative study
Svedahl, Ellen Rabben; Pape, Kristine; Toch-Marquardt, Marlen; Skarshaug, Lena Janita; Kaspersen, Silje Lill; Bjørngaard, Johan Håkon; Austad, Bjarne (Journal article; Peer reviewed, 2019)Background General practitioners (GPs) play a key role in securing and coordinating appropriate use of healthcare services, by providing primary and preventive healthcare and by acting as gatekeepers for secondary ... -
Intergenerational polygenic obesity risk throughout adolescence in a cross-sectional study design: The HUNT study, Norway
Næss, Marit; Sund, Erik; Vie, Gunnhild Åberge; Bjørngaard, Johan Håkon; Åsvold, Bjørn Olav; Holmen, Turid Lingaas; Kvaløy, Kirsti (Peer reviewed; Journal article, 2021)Objective This study examined the relationship between parental obesity polygenic risk and children’s BMI throughout adolescence. Additionally, from a smaller subsample, the objective was to assess whether parental polygenic ... -
Intergenerational Transmission of Overweight and Obesity from Parents to Their Adolescent Offspring – The HUNT Study
Næss, Marit; Holmen, Turid Lingaas; Langaas, Mette; Bjørngaard, Johan Håkon; Kvaløy, Kirsti (Journal article; Peer reviewed, 2016)Purpose: The main aim of this study was to examine weight associations between parents and offspring at two time points: 1995–97 and 2006–08, taking into account body mass index (BMI) and waist circumference. Methods: The ... -
Investigating the causal effect of smoking on hay fever and asthma: A Mendelian randomization meta-analysis in the CARTA consortium
Skaaby, Tea; Taylor, Amy E; Jacobsen, Rikke K.; Paternoster, Lavinia; Thuesen, Betina H.; Ahluwalia, Tarunveer S.; Larsen, Sofus C.; Zhou, Ang; Wong, Andrew; Gabrielsen, Maiken Elvestad; Bjørngaard, Johan Håkon; Flexeder, Claudia; Männistö, Satu; Hardy, Rebecca; Kuh, Diana; Barry, Sarah J.; Møllehave, Line Tang; Cerqueira, Charlotte; Friedrich, Nele; Bonten, Tobias N.; Noordam, Raymond; Mook-Kanamori, Dennis O.; Taube, Christian; Jessen, Leon E.; McConnachie, Alex; Sattar, Naveed; Upton, Mark N.; McSharry, Charles; Bønnelykke, Klaus; Bisgaard, Hans; Schulz, Holger; Strauch, Konstantin; Meitinger, Thomas; Peters, Annette; Grallert, Harald; Nohr, Ellen A.; Kivimäki, Mika; Kumari, Meena; Völker, Uwe; Nauck, Matthias; Völzke, Henry; Power, Chris; Hyppönen, Elina; Hansen, Torben; Jørgensen, Torben; Pedersen, Oluf; Salomaa, Veikko; Grarup, Niels; Langhammer, Arnulf; Romundstad, Pål Richard; Skorpen, Frank; Kaprio, Jaakko; Munafò, Marcus R.; Linneberg, Allan (Journal article; Peer reviewed, 2017)Observational studies on smoking and risk of hay fever and asthma have shown inconsistent results. However, observational studies may be biased by confounding and reverse causation. Mendelian randomization uses genetic ... -
Investigating the possible causal association of smoking with depression and anxiety using Mendelian randomisation meta-analysis: the CARTA consortium
Taylor, Amy E; Fluharty, Meg; Bjørngaard, Johan Håkon; Gabrielsen, Maiken Elvestad; Skorpen, Frank; Marioni, Riccardo R.; Campbell, A.; Engmann, J; Mirza, Saira Saeed; Loukola, A.; Laatikainen, Tiina; Partonen, Timo; Kaakinen, Marika; Ducci, Francesca; Cavadino, Alana; Husemoen, Lise Lotte N; Ahluwalia, Tarunveer Singh; Jacobsen, Rikke Kart; Skaaby, Tea; Ebstrup, Jeanette Frost; Mortensen, Erik Lykke; Minica, Camelia C; Vink, Jacqueline; Willemsen, Gonneke; Marques-Vidal, Pedro; Dale, Caroline E; Amuzu, Antoinette; Lennon, Lucy; Lahti, J; Palotie, Aarno; Räikkönen, K; Wong, Andrew; Paternoster, Lavinia; Wong, Angelita Pui-Yee; Horwood, L John; Murphy, Michael; Johnstone, Elaine; Kennedy, Martin A; Pausova, Zdenka; Paus, Tomas; Ben-Shlomo, Yoav; Nohr, Ellen A; Kuh, Diana; Kivimaki, Mika; Eriksson, Johan G; Morris, Richard W; Casas, Juan Pablo; Preisig, Martin; Boomsma, Dorret I; Linneberg, Allan; Power, Chris; Hypponen, Elina; Veijola, J; Järvelin, Marjo-Riitta; Korhonen, T.; Tiemeier, H; Kumari, Meena; Porteous, David J.; Hayward, Caroline; Romundstad, Pål Richard; Smith, George Davey; Munafo, Marcus R (Journal article; Peer reviewed, 2014)Objectives: To investigate whether associations of smoking with depression and anxiety are likely to be causal, using a Mendelian randomisation approach. Design: Mendelian randomisation meta-analyses using a genetic ... -
Is smoking heaviness causally associated with alcohol use? A Mendelian randomization study in four European cohorts
Taylor, Michelle; Rode, Line; Bjørngaard, Johan Håkon; Taylor, Amy E.; Bojesen, Stig E.; Åsvold, Bjørn Olav; Gabrielsen, Maiken Elvestad; Lewis, Glyn; Nordestgaard, Børge G.; Romundstad, Pål Richard; Hickman, Matthew; Munafò, Marcus R. (Journal article; Peer reviewed, 2018)Background Observational studies have shown that tobacco and alcohol use co-occur, but it is not clear whether this relationship is causal. Methods Using data from the Avon Longitudinal Study of Parents and Children ... -
Maternal Age at Child Birth, Birth Order, and Suicide at a Young Age: A Sibling Comparison
Bjørngaard, Johan Håkon; Bjerkeset, Ottar; Vatten, Lars Johan; Janszky, Imre; Gunnell, David; Romundstad, Pål Richard (Journal article; Peer reviewed, 2013)Previous studies have reported strong associations between birth order, maternal age, and suicide, but these results might have been confounded by socioeconomic and other factors. To control for such factors, we compared ... -
Maternal Smoking in Pregnancy and Offspring Depression: A cross cohort and negative control study
Taylor, Amy E; Carslake, David; De Mola, Christian Loret; Rydell, Mina; Nilsen, Tom Ivar Lund; Bjørngaard, Johan Håkon; Horta, Bernardo Lessa; Pearson, Rebecca; Rai, Dheeraj; Galanti, Maria Rosaria; Barros, Fernando C.; Romundstad, Pål Richard; Davey Smith, George; Munafo, Marcus R (Journal article; Peer reviewed, 2017)Previous reports suggest that offspring of mothers who smoke during pregnancy have greater risk of developing depression. However, it is unclear whether this is due to intrauterine effects. Using data from the Avon ... -
Måling av brukererfaringer blant voksne i det psykiske helsevernet: Innsamlingsmetode og spørreskjema
Bjertnæs, Øyvind Andresen; Bjørngaard, Johan Håkon; Dahle, Kari Aanjesen; Groven, Gøril; Grut, Lisbet; Hofoss, Dag; Saunes, Ingrid Sperre; Ruud, Torleif (Rapport fra Kunnskapssenteret;, Research report, 2004) -
Mental health in Norwegian farmers: The HUNT Study
Torske, Magnhild Oust (Doctoral theses at NTNU;2017:270, Doctoral thesis, 2017)Agriculture in industrialized countries has undergone major structural changes in recent decades. Farmers are exposed to a number of work-related stressors, such as high levels of work, unfavourable weather, financial ... -
Molecular Subtypes of Breast Cancer: Long-term Incidence Trends and Prognostic Differences
Valla, Marit; Vatten, Lars Johan; Engstrøm, Monica J; Haugen, Olav Anton; Akslen, Lars A.; Bjørngaard, Johan Håkon; Hagen, Anne Irene; Ytterhus, Borgny; Bofin, Anna M.; Opdahl, Signe (Journal article; Peer reviewed, 2016)Background: Secular trends in incidence and prognosis of molecular breast cancer subtypes are poorly described. We studied long-term trends in a population of Norwegian women born 1886–1977. Methods: A total of 52,949 ...