2024

• Benestad, Merete; Drageset, Jorunn; Vollsæter, Maria; Hufthammer, Karl Ove; Halvorsen, Thomas; Vederhus, Bente Johanne. (2024) Health-related quality of life in two birth cohorts of extremely preterm born adults. Acta Paediatrica
  Academic article
• Sigmo, Gudrun David; Hauge, Solveig; Hufthammer, Karl Ove; Wallenius, Marianne; Salvesen, Kjell Åsmund Blix; Daltveit, Anne Kjersti Nesje. (2024) Male patients with inflammatory joint diseases are less likely than controls to be childless: Results from a Norwegian population-based cohort study of 10 865 patients. Annals of the Rheumatic Diseases
  Academic article
• Schaufel, Margrethe Aase; Schanche, Elisabeth; Onarheim, Kristine Husøy; Forthun, Ingeborg; Hufthammer, Karl Ove; Engelund, Inger Elise. (2024) Stretching oneself too thin and facing ethical challenges: Healthcare professionals’ experiences during the COVID-19 pandemic. Nursing Ethics
  Academic article
• Rotevatn, Elisabeth Orskov; Engan, Mette; Stensaker, Emilie; Hufthammer, Karl Ove; Rygh, Lars Jørgen. (2024) Measuring pain intensity through physical interaction in an experimental model of cold-induced pain: A method comparison study. Scandinavian Journal of Pain
  Academic article

2023

• Muralitharan, Praveen; Carlsen, Petter; Hilland, Magnus; Delestre-Levai, Irisz; Vollsæter, Maria; Hufthammer, Karl Ove. (2023) Use of inhaled ipratropium bromide to improve exercise-induced laryngeal obstruction cannot be recommended. European Respiratory Journal Open Research (ERJ Open Research)
  Academic article
• Breidablik, Hans Johan; Hufthammer, Karl Ove; Rangul, Vegar; Andersen, John Roger; Meland, Eivind; Hetlevik, Øystein. (2023) Lower levels of physical activity volume are beneficial, and it’s never too late to start: Results from the HUNT Study, Norway. Scandinavian Journal of Public Health
  Academic article
• Olsen, Arild Torvund; Hufthammer, Karl Ove. (2023) Pepar & Gulrot. Bok 1. Outland forlag
  Book Translation
• Eide, Leslie S.P.; Fridlund, Bengt Gotthard Anton; Hufthammer, Karl Ove; Haaverstad, Rune; Packer, Erik; Ranhoff, Anette Hylen. (2023) Anxiety and depression in patients aged 80 years and older following aortic valve therapy. A six‑month follow‑up study. Aging Clinical and Experimental Research
  Academic article
• Vie, Tina Løkke; Hufthammer, Karl Ove; Rangul, Vegar; Andersen, John Roger; Meland, Eivind; Breidablik, Hans Johan. (2023) Patterns of physical activity over 34 years in a large sample of adults: The HUNT study, Norway. Scandinavian Journal of Public Health
  Academic article
• Wolff, Anette Susanne Bøe; Hansen, Lena; Grytaas, Marianne Aardal; Oftedal, Bergithe Eikeland; Breivik, Lars Ertesvåg; Zhou, Fan. (2023) Vaccination prevents severe COVID-19 outcome in patients with neutralizing type 1 interferon autoantibodies. iScience
  Academic article
• Rogde, Åse Johnsen; Lehmann, Sverre; Halvorsen, Thomas; Clemm, Hege Synnøve Havstad; Røksund, Ola Drange; Hufthammer, Karl Ove. (2023) Prevalence and impact of exercise-induced laryngeal obstruction in asthma: a study protocol for a cross-sectional and longitudinal study. BMJ Open
  Academic article
• Bårdsen, Tonje; Røksund, Ola Drange; Eagan, Tomas Mikal Lind; Hufthammer, Karl Ove; Benestad, Merete Røineland; Clemm, Hege Synnøve Havstad. (2023) Impaired Lung Function in Extremely Preterm-Born Adults in Their Fourth Decade of Life. American Journal of Respiratory and Critical Care Medicine
  Letter to the editor
• Dhayalan, Dhanushan; Tveiten, Øystein Vesterli; Finnkirk, Monica Katrine; Storstein, Anette; Hufthammer, Karl Ove; Goplen, Frederik Kragerud. (2023) Upfront Radiosurgery vs a Wait-And-Scan Approach for Small- or Medium-Sized Vestibular Schwannoma: The V-REX Randomized Clinical Trial. Journal of the American Medical Association (JAMA)
  Academic article

2022

• Reigstad, Hallvard; Hufthammer, Karl Ove; Rønnestad, Arild Erland; Klingenberg, Claus Andreas; Stensvold, Hans Jørgen; Markestad, Trond Jacob. (2022) Early surfactant and non-invasive ventilation versus intubation and surfactant: a propensity score-matched national study. BMJ Paediatrics Open
  Academic article
• Benestad, Merete; Drageset, Jorunn; Hufthammer, Karl Ove; Vollsæter, Maria; Halvorsen, Thomas; Vederhus, Bente Johanne. (2022) Long-term follow-up of self-reported mental health and health-related quality of life in adults born extremely preterm. Early Human Development
  Academic article
• Brevik, Heidi Synnøve; Hufthammer, Karl Ove; Hernes, Merete Eide; Bjørneklett, Rune Oskar; Brattebø, Guttorm. (2022) Implementing a new emergency medical triage tool in one health region in Norway: some lessons learned. BMJ Open Quality
  Academic article
• Bårdsen, Tonje; Røksund, Ola Drange; Benestad, Merete; Hufthammer, Karl Ove; Clemm, Hege Synnøve Havstad; Mikalsen, Ingvild Bruun. (2022) Tracking of lung function from 10 to 35 years after being born extremely preterm or with extremely low birth weight. Thorax
  Academic article
• Engan, Mette; Engeset, Merete Salveson; Sandvik, Lorentz; Gamlemshaug, Ole Christer Oma; Engesæter, Ingvild Øvstebø; Øymar, Knut Asbjørn Alexander. (2022) Left vocal cord paralysis, lung function and exercise capacity in young adults born extremely preterm with a history of neonatal patent ductus arteriosus surgery—A national cohort study. Frontiers in pediatrics
  Academic article
• Brekke, Ragnvald Ljones; Almeland, Stian Kreken; Hufthammer, Karl Ove; Hansson, Emma. (2022) Agreement of clinical assessment of burn size and burn depth between referring hospitals and burn centres: A systematic review. Burns
  Academic article
• Clemm, Hege Synnøve Havstad; Røksund, Ola Drange; Andersen, Tiina Maarit; Heimdal, John-Helge; Karlsen, Tom; Hilland, Magnus. (2022) Exercise-induced Laryngeal Obstruction: Protocol for a Randomized Controlled Treatment Trial. Frontiers in pediatrics
  Academic article
• Hufthammer, Anne Karin; Hufthammer, Karl Ove. (2022) The great auk in Norway: From common to locally extinct. International Journal of Osteoarchaeology
  Academic article

2021

• Try, Eva Helene; Halmøy, Anne; Hufthammer, Karl Ove; Borge, Lisbet. (2021) Utprøving av en tilpasset gruppebehandling for unge voksne. Tidsskrift for Norsk Psykologforening
  Academic article
• Haugen, Dagny Renata Faksvåg; Hufthammer, Karl Ove; Gerlach, Christina; Sigurdardottir, Katrin Rut; Hansen, Marit Irene Tuen; Ting, Grace. (2021) Good Quality Care for Cancer Patients Dying in Hospitals, but Information Needs Unmet: Bereaved Relatives' Survey within Seven Countries. The Oncologist
  Academic article
• Frantzen, Astri Tafjord; Eide, Leslie S.P.; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove; Kuiper, Karel Kier-Jan. (2021) Frailty Status and Patient-Reported Outcomes in Octogenarians Following Transcatheter or Surgical Aortic Valve Replacement. Heart, Lung and Circulation
  Academic article
• Miljeteig, Ingrid; Forthun, Ingeborg; Hufthammer, Karl Ove; Engelund, Inger Elise; Schanche, Elisabeth; Schaufel, Margrethe Aase. (2021) Priority-setting dilemmas, moral distress and support experienced by nurses and physicians in the early phase of the COVID-19 pandemic in Norway. Nursing Ethics
  Academic article
• Engan, Britt; Engan, Mette; Greve, Gottfried; Vollsæter, Maria; Hufthammer, Karl Ove; Leirgul, Elisabeth. (2021) Vascular endothelial function assessed by flow-mediated vasodilatation in young adults born very preterm or with extremely low birthweight: A regional cohort study. Frontiers in pediatrics
  Academic article
• Hjorth, Nina Elisabeth; Hufthammer, Karl Ove; Sigurdardottir, Katrin Rut; Tripodoro, Vilma Adriana; Goldraij, Gabriel; Kvikstad, Anne. (2021) Hospital care for the dying patient with cancer: does an advance care planning invitation influence bereaved relatives’ experiences? A two country survey. BMJ Supportive & Palliative Care
  Academic article
• Nystad, Tone Wikene; Hufthammer, Karl Ove; Buanes, Eirik Alnes; Bryne, Kjartan; Fevang, Bjørg Tilde Svanes. (2021) Covid-19 hos pasienter med kronisk inflammatorisk leddsykdom. Tidsskrift for Den norske legeforening
  Academic article
• Satrell, Emma Elsa Carolina; Clemm, Hege Synnøve Havstad; Røksund, Ola Drange; Hufthammer, Karl Ove; Thorsen, Einar; Halvorsen, Thomas. (2021) Development of lung diffusion to adulthood following extremely preterm birth. European Respiratory Journal
  Academic article
• Kleve, Liv; Frostad, Stein; Hufthammer, Karl Ove; Elgen, Irene Bircow. (2021) Spesialiserte team for spiseforstyrrelser. Tidsskrift for Norsk Psykologforening
  Popular scientific article
• Eide, Thea Tislevoll; Hufthammer, Karl Ove; Brun, Atle; Brackman, Damien; Svarstad, Einar; Tøndel, Camilla. (2021) Accuracy of single intravenous access iohexol GFR in children is hampered by marker contamination. Scientific Reports
  Academic article
• Wolff, Anette Susanne Bøe; Breivik, Lars Ertesvåg; Hufthammer, Karl Ove; Grytaas, Marianne; Bratland, Eirik; Husebye, Eystein Sverre. (2021) The natural history of 21-hydroxylase autoantibodies in autoimmune Addison’s disease. European Journal of Endocrinology (EJE)
  Academic article

2020

• Strandenes, Geir; Sivertsen, Joar; Bjerkvig, Christopher Kalhagen; Fosse, Theodor; Cap, Andrew P.; Del Junco, Deborah J.. (2020) A pilot trial of platelets stored cold versus at room temperature for complex cardiothoracic surgery. Anesthesiology
  Academic article
• Aakre, Elin Kismul; Ulvik, Atle; Hufthammer, Karl Ove; Jammer, Ib. (2020) Mortality and complications after emergency laparotomy in patients above 80 years. Acta Anaesthesiologica Scandinavica
  Academic article
• Skaar, Elisabeth; Øksnes, Anja; Eide, Leslie S.P.; Norekvål, Tone Merete; Ranhoff, Anette Hylen; Nordrehaug, Jan Erik. (2020) Baseline frailty status and outcomes important for shared decision‑making in older adults receiving transcatheter aortic valve implantation, a prospective observational study. Aging Clinical and Experimental Research
  Academic article
• Hetlevik, Øystein; Meland, Eivind; Hufthammer, Karl Ove; Breidablik, Hans Johan; Jahanlu, David; Vie, Tina Løkke. (2020) Self-rated health in adolescence as a predictor of ‘multi-illness’ in early adulthood: A prospective registry-based Norwegian HUNT study. SSM - Population Health
  Academic article

2019

• Skaar, Elisabeth; Eide, Leslie Sofia Pareja; Norekvål, Tone M.; Ranhoff, Anette Hylen; Nordrehaug, Jan Erik; Forman, Daniel E.. (2019) A novel Geriatric Assessment frailty score predicts 2-year mortality after Transcatheter Aortic Valve implantation. European Heart Journal - Quality of Care and Clinical Outcomes
  Academic article
• Vie, Tina Løkke; Hufthammer, Karl Ove; Meland, Eivind; Breidablik, Hans Johan. (2019) Self-rated health (SRH) in young people and causes of death and mortality in young adulthood. A prospective registry-based Norwegian HUNT-study. SSM - Population Health
  Academic article
• Almeland, Stian Kreken; Lindford, Andrew; Sundhagen, Henriette Pisani; Hufthammer, Karl Ove; Strandenes, Eivind; Svendsen, Henrik Løvendahl. (2019) The effect of microsurgical training on novice medical students' basic surgical skills-a randomized controlled trial. European journal of plastic surgery
  Academic article
• Gerlach, Christina; Mayland, Catriona Rachel; Hufthammer, Karl Ove; Tripodoro, Vilma; Goldraij, Gabriel; Leppert, Wojciech. (2019) "Did a member of the healthcare team talk to you about what to expect when your relative was dying?" - "No." Quality of care for cancer patients dying in hospitals: first results from the international CODE (Care of the Dying Evalution) survey. . Palliative Medicine
  Abstract
• Flølo, Tone Nygaard; Tell, Grethe S.; Kolotkin, Ronette Loganzo; Aasprang, Anny; Norekvål, Tone M.; Våge, Villy. (2019) Changes in quality of life 5 years after sleeve gastrectomy: A prospective cohort study. BMJ Open
  Academic article
• Schopf, Thomas Roger Griesbeck; Nedrebø, Bente; Hufthammer, Karl Ove; Daphu, Inderjit Kaur; Lærum, Hallvard. (2019) How well is the electronic health record supporting the clinical tasks of hospital physicians? A survey of physicians at three Norwegian hospitals. BMC Health Services Research
  Academic article

2018

• Steihaug, Ole Martin; Gjesdal, Clara Gram; Bogen, Bård Erik; Kristoffersen, Målfrid Holen; Lien, Gunhild; Hufthammer, Karl Ove. (2018) Does sarcopenia predict change in mobility after hip fracture? A multicenter observational study with one-year follow-up. BMC Geriatrics
  Academic article
• Vie, Tina Løkke; Hufthammer, Karl Ove; Holmen, Turid Lingaas; Meland, Eivind; Breidablik, Hans Johan. (2018) Is self-rated health in adolescence a predictor of prescribed medication in adulthood? Findings from the Nord Trøndelag Health Study and the Norwegian Prescription Database. SSM - Population Health
  Academic article
• Power, Kjersti; Gramstad, Arne; Gilhus, Nils Erik; Hufthammer, Karl Ove; Engelsen, Bernt. (2018) Cognitive dysfunction after generalized tonic-clonic status epilepticus in adults. Acta Neurologica Scandinavica
  Academic article
• Jansson, Ragnhild Wivestad; Hufthammer, Karl Ove; Krohn, Jørgen Gitlesen. (2018) Diabetic retinopathy in type 1 diabetes patients in Western Norway. Acta Ophthalmologica
  Academic article
• Eide, Leslie Sofia Pareja; Ranhoff, Anette Hylen; Lauck, Sandra; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove. (2018) Indwelling urinary catheters, aortic valve treatment and delirium: a prospective cohort study . BMJ Open
  Academic article

2017

• Power, Kjersti; Gramstad, Arne; Gilhus, Nils Erik; Hufthammer, Karl Ove; Engelsen, Bernt. (2017) Cognitive function after status epilepticus versus after multiple generalized tonic-clonic seizures. Epilepsy Research
  Academic article
• Amofah, Hege Andersen; Broström, Anders; Eide, Leslie Sofia Pareja; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove. (2017) Factors affecting in-hospital sleep-wake pattern in octogenarians during the early postoperative phase after transcutaneous aortic valve replacement. European Journal of Cardiovascular Nursing
  Abstract
• Buanes, Eirik Alnes; Hufthammer, Karl Ove; Langørgen, Jørund; Guttormsen, Anne Berit; Heltne, Jon-Kenneth. (2017) Targeted temperature management in cardiac arrest: Survival evaluated by propensity score matching. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
  Academic article
• Sunde, Geir Arne; Sandberg, Mårten; Lyon, Richard; Fredriksen, Knut; Burns, Brian; Hufthammer, Karl Ove. (2017) Hypoxia and hypotension in patients intubated by physician staffed helicopter emergency medical services - a prospective observational multi-centre study. BMC Emergency Medicine
  Academic article
• Flølo, Tone Nygaard; Andersen, John Roger; Kolotkin, Ronette L.; Aasprang, Anny; Natvig, Gerd Karin; Hufthammer, Karl Ove. (2017) Five-year outcomes after vertical sleeve gastrectomy for severe obesity: a prospective cohort Study. Obesity Surgery
  Academic article
• Sekse, Ragnhild Johanne Tveit; Hufthammer, Karl Ove; Vika, Margrethe Elin. (2017) Sexual activity and functioning in women treated for gynaecological cancers. Journal of Clinical Nursing (JCN)
  Academic article
• Tøndel, Camilla; Salvador, Cathrin Lytomt; Hufthammer, Karl Ove; Bolann, Bjørn Johan; Brackman, Damien; Bjerre, Anna Kristina. (2017) Iohexol plasma clearance in children: validation of multiple formulas and single-point sampling times. Pediatric nephrology (Berlin, West)
  Academic article
• Eide, Leslie Sofia Pareja; Ranhoff, Anette Hylen; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove; Lauck, Sandra. (2017) Urinary catheter use and delirium after aortic valve therapy. European Journal of Cardiovascular Nursing
  Academic article
• Olsen, Siv Jorunn Storli; Fridlund, Bengt Gotthard Anton; Eide, Leslie Sofia Pareja; Hufthammer, Karl Ove; Kuiper, Karel Kier-Jan; Nordrehaug, Jan Erik. (2017) Changes in self-reported health and quality of life in octogenarian patients one month after transcatheter aortic valve implantation. European Journal of Cardiovascular Nursing
  Academic article

2016

• Eide, Leslie Sofia Pareja; Ranhoff, Anette Hylen; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove; Kuiper, Karel Kier-Jan. (2016) Readmissions and mortality in delirious versus non-delirious octogenarian patients after aortic valve therapy: A prospective cohort study. BMJ Open
  Academic article
• Bruun, Trond; Oppegaard, Oddvar; Hufthammer, Karl Ove; Langeland, Nina; Skrede, Steinar. (2016) Early Response in Cellulitis: A Prospective Study of Dynamics and Predictors. Clinical Infectious Diseases
  Academic article
• Eide, Leslie Sofia Pareja; Ranhoff, Anette Hylen; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove; Kuiper, Karel Kier-Jan. (2016) Delirium as a Predictor of Physical and Cognitive Function in Individuals Aged 80 and Older After Transcatheter Aortic Valve Implantation or Surgical Aortic Valve Replacement. Journal of The American Geriatrics Society
  Academic article
• Amofah, Hege Andersen; Brostrøm, Anders; Fridlund, Bengt Gotthard Anton; Bjorvatn, Bjørn; Haaverstad, Rune; Hufthammer, Karl Ove. (2016) Sleep in octogenarians during the postoperative phase after transcatheter or surgical aortic valve replacement. European Journal of Cardiovascular Nursing
  Academic article
• Eide, Leslie Sofia Pareja; Ranhoff, Anette Hylen; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove; Kuiper, Karel Kier-Jan. (2016) Can Delirium Predict Physical Function 1 and 6 months after Aortic Valve Treatment?. European Journal of Cardiovascular Nursing
  Abstract

2015

• Sunde, Geir Arne; Heltne, Jon-Kenneth; Lockey, David; Burns, Brian; Sandberg, Mårten; Fredriksen, Knut. (2015) Airway management by physician-staffed helicopter emergency medical services : a prospective, multicentre, observational study of 2,327 patients. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
  Academic article
• Frantzen, Astri; Fridlund, Bengt Gotthard Anton; Eide, Leslie Sofia Pareja; Hufthammer, Karl Ove; Kuiper, Karel Kier-Jan; Ranhoff, Anette Hylen. (2015) The impact of frailty status on self-reported health and quality of life in octogenarians with severe symptomatic aortic stenosis prior to aortic valve implantation. European Journal of Cardiovascular Nursing
  Abstract
• Eide, Leslie Sofia Pareja; Ranhoff, Anette Hylen; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove; Kuiper, Karel Kier-Jan. (2015) Incidence and impact of delirium on physical and cognitive function in octogenarian patients one and six months after Transcatheter Aortic Valve Implantation or Surgical Aortic Valve Replacement. European Journal of Cardiovascular Nursing
  Abstract
• Sekse, Ragnhild Johanne Tveit; Hufthammer, Karl Ove; Vika, Margrethe Elin. (2015) Fatigue and quality of life in women treated for various types of gynaecological cancers: a cross-sectional study. Journal of Clinical Nursing (JCN)
  Academic article
• Eide, Leslie Sofia Pareja; Ranhoff, Anette Hylen; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove; Kuiper, Karel Kier-Jan. (2015) Comparison of frequency, risk factors, and time course of postoperative delirium in octogenarians after transcatheter aortic valve implantation versus surgical aortic valve replacement. American Journal of Cardiology
  Academic article
• Sunde, Geir Arne; Heltne, Jon-Kenneth; Lockey, David; Burns, Brian; Sandberg, Mårten; Fredriksen, Knut. (2015) Airway management by physician-staffed Helicopter Emergency Medical Services – a prospective, multicentre, observational study of 2,327 patients. Scandinavian Journal of Trauma, Resuscitation and Emergency Medicine
  Academic article
• Buanes, Eirik Alnes; Gramstad, Arne; Søvig, Karoline Kjellsdotter; Hufthammer, Karl Ove; Flaatten, Hans; Husby, Thomas. (2015) Cognitive function and health-related quality of life four years after cardiac arrest. Resuscitation
  Academic article
• Andersen, John Roger; Hernæs, Ulrikke Johanne Voltersvik; Hufthammer, Karl Ove; Våge, Villy. (2015) Employment status and sick-leave following obesity surgery: a five-year prospective cohort study. PeerJ
  Academic article

2014

• Vie, Tina Løkke; Hufthammer, Karl Ove; Holmen, Turid Lingaas; Meland, Eivind; Breidablik, Hans Johan. (2014) Is self-rated health a stable and predictive factor for allostatic load in early adulthood? Findings from the Nord Trøndelag Health Study (HUNT). Social Science and Medicine
  Academic article
• Støve, Bård; Tjøstheim, Dag Bjarne; Hufthammer, Karl Ove. (2014) Using local Gaussian correlation in a nonlinear re-examination of financial contagion. Journal of Empirical Finance
  Academic article
• Eide, Leslie Sofia Pareja; Ranhoff, Anette Hylen; Fridlund, Bengt Gotthard Anton; Haaverstad, Rune; Hufthammer, Karl Ove; Kuiper, Karel Kier-Jan. (2014) Risk factors for post-operative delirium in octogenarian aortic stenosis patients. European Journal of Cardiovascular Nursing
  Abstract

2013

• Tjøstheim, Dag Bjarne; Hufthammer, Karl Ove. (2013) Local Gaussian correlation: A new measure of dependence. Journal of Econometrics
  Academic article

2011

• Støve, Bård; Tjøstheim, Dag Bjarne; Hufthammer, Karl Ove. (2011) Using Local Gaussian Correlation in a Nonlinear Re-examination of Financial Contagion. Arbeidsnotat (14)
  Report

2010

• Støve, Bård; Tjøstheim, Dag; Hufthammer, Karl Ove. (2010) Measuring Financial Contagion by Local Gaussian Correlation. Norges Handelshøyskole. Institutt for foretaksøkonomi (12)
  Report

2009

• Hufthammer, Karl Ove. (2009) Local gaussian correlation. Universitetet i Bergen Universitetet i Bergen
  Doctoral dissertation