Academic article

• Kolstø, Trym Nossum; Werner, David Andreas Thomas; Thorsen, Kenneth et al. (2025). Pediatric moderate and severe traumatic brain injury – A national, population-based cohort study. (external link)
• Thorsen, Kenneth; Oord, Pieter; Narvestad, Jon et al. (2025). Demography, emergency interventions and outcome after severe pelvic injuries: a two-decade registry study from South- Western Norway. (external link)
• Bjørke, Guro; Dalen, Ingvild; Thorsen, Kenneth (2025). Accuracy of the Norwegian trauma protocol. An observational population study from South-Western Norway. (external link)
• Kanani, Arezo; Veen, Torhild; Lea, Dordi et al. (2024). Neoadjuvant Immunotherapy Followed by Surgery Compared with Upfront Surgery Alone in Operable Colon Cancer with Deficient Mismatch Repair: Modeling Oncological Outcomes and Numbers Needed to Treat. (external link)
• Årsland, Martine Alstveit; Weber, Clemens; Enoksen, Cathrine Harstad et al. (2024). Characteristics and demography of low energy fall injuries in patients > 60 years of age: a population-based analysis over a decade with focus on undertriage. (external link)
• Harrison, Ewen M.; Gobin, N.; Freitas, A.V. et al. (2024). Development and external validation of the 'Global Surgical-Site Infection' (GloSSI) predictive model in adult patients undergoing gastrointestinal surgery. (external link)
• Velde, Gunnar; Ismail, Warsan; Thorsen, Kenneth (2024). Perforated peptic ulcer. (external link)
• Larsen, Johannes Wiik; Thorsen, Kenneth; Søreide, Kjetil (2023). Splenic injury from blunt trauma. (external link)
• Weber, Clemens; Andreassen, Joakim Stray; Isles, Siobhan et al. (2022). Incidence, Mechanisms of Injury and Mortality of Severe Traumatic Brain Injury: An Observational Population-Based Cohort Study from New Zealand and Norway. (external link)
• Weber, Clemens; Werner, David Andreas Thomas; Thorsen, Kenneth et al. (2022). Health Care Implications of the COVID-19 Pandemic for Patients with Severe Traumatic Brain Injury—A Nationwide, Observational Cohort Study. (external link)
• Larsen, Johannes Wiik; Søreide, Kjetil; Søreide, Jon Arne et al. (2022). Epidemiology of abdominal trauma: An age- and sex-adjusted incidence analysis with mortality patterns. (external link)
• Andreassen, Joakim Stray; Thorsen, Kenneth; Søreide, Kjetil et al. (2022). Is there a weekend effect on mortality rate and outcome for moderate and severe traumatic brain injury? A population-based, observational cohort study. (external link)
• Reuter, Anna; Rogge, Lisa; Monahan, Mark et al. (2022). Global economic burden of unmet surgical need for appendicitis. (external link)
• Weber, Clemens; Andreassen, Joakim Stray; BEHBAHANI, MAZIAR et al. (2022). Characteristics, image findings and clinical outcome of moderate and severe traumatic brain injury among severely injured children: a population-based cohort study. (external link)
• Søreide, Kjetil; Skjold-Ødegaard, Benedicte; Thorsen, Kenneth et al. (2021). Adhesions after open and laparoscopic abdominal surgery. (external link)
• Meshkinfamfard, Maryam; Narvestad, Jon; Larsen, Johannes Wiik et al. (2021). Structured and systematic team and procedure training in severe trauma: Going from ‘Zero to Hero’ for a time-critical, low-volume emergency procedure over three time periods. (external link)
• Thorsen, Kenneth; Narvestad, Jon; Tjosevik, Kjell Egil et al. (2021). Changing from a two-tiered to a one-tiered trauma team activation protocol: a before–after observational cohort study investigating the clinical impact of undertriage. (external link)
• Larsen, Johannes Wiik; Thorsen, Kenneth; Sandve, Knut Olav Lende et al. (2020). Incidence and characteristics of pancreatic injuries among trauma patients admitted to a Norwegian trauma centre: a population-based cohort study. (external link)
• Thorsen, Kenneth; Vetrhus, Morten; Narvestad, Jon et al. (2020). Performance and outcome evaluation of emergency resuscitative thoracotomy in a Norwegian trauma centre: a population-based consecutive series with survival benefits. (external link)
• Søreide, Kjetil; Weber, Clemens; Thorsen, Kenneth (2020). Priorities for research in trauma care: creating a bucket list. (external link)
• Thomas, Hannah S.; Weiser, Thomas G.; Drake, Thomas M. et al. (2019). Pooled analysis of WHO Surgical Safety Checklist use and mortality after emergency laparotomy. (external link)
• Glasbey, James C.; Adisa, Adewale O.; Costas-Chavarri, Ainhoa et al. (2019). Global variation in anastomosis and end colostomy formation following left-sided colorectal resection.. (external link)
• Søreide, Kjetil; Thorsen, Kenneth; Søreide, Jon Arne (2016). Clinical patterns of presentation and attenuated inflammatory response in octo- and nonagenarians with perforated gastroduodenal ulcers.. (external link)
• Drake, Thomas M.; Fitzgerald, J. Edward F; Poenaru, Dan et al. (2016). Determinants of morbidity and mortality following emergency abdominal surgery in children in low-income and middle-income countries. (external link)
• Thorsen, Kenneth; Søreide, Jon Arne; Søreide, Kjetil (2016). Long-term mortality in patients operated for perforated peptic ulcer: factors limiting longevity are dominated by older age, comorbidity burden and severe postoperative complications. (external link)
• Søreide, Kjetil; Thorsen, Kenneth; Harrison, Ewen M. et al. (2015). Perforated peptic ulcer. (external link)
• Thorsen, Kenneth; Søreide, Jon Arne; Søreide, Kjetil (2014). What is the best predictor of mortality in perforated peptic ulcer disease? A population-based, multivariable regression analysis including three clinical scoring systems. (external link)
• Søreide, Kjetil; Thorsen, Kenneth; Søreide, Jon Arne (2014). Predicting outcomes in patients with perforated gastroduodenal ulcers: artificial neural network modelling indicates a highly complex disease. (external link)
• Thorsen, Kenneth; Søreide, Jon Arne; Kvaløy, Jan Terje et al. (2013). Epidemiology of perforated peptic ulcer: Age- and gender-adjusted analysis of incidence and mortality. (external link)
• Thorsen, Kenneth; Glomsaker, Tom; Meer, Andreas Von et al. (2011). Trends in diagnosis and surgical management of patients with perforated peptic ulcer. (external link)

Poster

• Årsland, Martine A.; Kanani, Arezo; Birkeland, Hans Erik et al. (2023). Fast track CT scan and geriatric trauma team as a first line treatment of elderly patients with low energy fall and head injury. (external link)

Academic lecture

• Årsland, Martine A.; Enoksen, Cathrine Harstad; Dalen, Ingvild et al. (2023). Characteristics and demography of low energy fall injuries in the geriatric trauma population over a decade. (external link)
• Årsland, Martine A.; Enoksen, Cathrine Harstad; Dalen, Ingvild et al. (2022). CHARACTERISTICS AND DEMOGRAPHY OF LOW ENERGY FALL INJURIES IN THE GERIATRIC TRAUMA POPULATION OVER A DECADE. (external link)
• Andreassen, Joakim Stray; Werner, David Andreas Thomas; Thorsen, Kenneth et al. (2022). The effects of reduced clinical activity on mortality in moderate and severe traumatic brain injury – an observational cohort study. (external link)

Academic literature review

• Søreide, Kjetil; Thorsen, Kenneth; Søreide, Jon Arne (2014). Strategies to improve the outcome of emergency surgery for perforated peptic ulcer. (external link)
• Thorsen, Kenneth; Søreide, Jon Arne; Søreide, Kjetil (2013). Scoring systems for outcome prediction in patients with perforated peptic ulcer. (external link)
• Thorsen, Kenneth; Ringdal, Kjetil G.; Strand, Kristian et al. (2011). Clinical and cellular effects of hypothermia, acidosis and coagulopathy in major injury. (external link)

Doctoral dissertation

• Thorsen, Kenneth (2014). Perforated peptic ulcer; epidemiology, management and outcome prediction. (external link)

See a complete overview of publications in Cristin.