Publication profile
Publication profile
Fredrik Andreas Dahl
Name:
Fredrik Andreas Dahl
Title:
Seniorforsker / Senior Reseach Scientist
Phone:
(+47) +47 22 85 25 92
Email:
fadahl [at] nr [dot] no
Scientific areas:
Add to contacts (vCard) Show publications
Academic article
2022
. Prediction of occult atrial fibrillation in patients after cryptogenic stroke and transient ischaemic attack: PROACTIA. Europace (ISSN 1099-5129). 24(12) pp 1881-1888. doi: 10.1093/europace/euac092. 2022.
. Stroke unit demand in Norway – present and future estimates. BMC Health Services Research (ISSN 1472-6963). 22 doi: 10.1186/s12913-021-07385-1. 2022. Arkiv
. A mammography classification model trained from image labels only. Proceedings of the Northern Lights Deep Learning Workshop. doi: 10.7557/18.6244. 2022.
. The FLIPPED STEP study: A randomized controlled trial of flipped vs. traditional classroom teaching in a university-level statistics and epidemiology course. International Journal of Educational Research Open (ISSN 2666-3740). 3 doi: 10.1016/j.ijedro.2022.100197. 2022.
2021
. Systemic Inflammation in Preclinical Ulcerative Colitis. Gastroenterology (ISSN 0016-5085). 161(5) pp 1526-1539.e9. doi: 10.1053/j.gastro.2021.07.026. 2021.
. Langtidsprognose for pasienter innlagt i en medisinsk overvåkningsavdeling. Tidsskrift for Den norske legeforening (ISSN 0029-2001). 141(9) pp 1-9. doi: 10.4045/tidsskr.20.0961. 2021. Arkiv
. Neural classification of Norwegian radiology reports: using NLP to detect findings in CT-scans of children. BMC Medical Informatics and Decision Making (ISSN 1472-6947). 21(1) pp 1-8. doi: 10.1186/s12911-021-01451-8. 2021. Arkiv
. Stroke Mimics on the Stroke Unit – Temporal trends 2008–2017 at a large Norwegian university hospital. Acta Neurologica Scandinavica (ISSN 0001-6314). 144(6) pp 695-705. doi: 10.1111/ane.13527. 2021.
2020
. A Markov chain method for counting and modelling migraine attacks. Scientific Reports (ISSN 2045-2322). 10:3631 pp 1-10. doi: 10.1038/s41598-020-60505-5. 2020. Arkiv
. No Correlation Between Ethical Judgment in Trolley Dilemmas and Vaccine Scenarios for Nurse Specialist Students. Journal of Empirical Research on Human Research Ethics (ISSN 1556-2646). 15 pp 292-297. doi: 10.1177/1556264620911234. 2020. Arkiv
. Surgical site infection after hip fracture – mortality and risk factors: an observational cohort study of 1,709 patients. Acta Orthopaedica (ISSN 1745-3674). 91(3) pp 347-352. doi: 10.1080/17453674.2020.1717841. 2020. Arkiv
. Capacity and patient flow planning in post-term pregnancy outpatient clinics: a computer simulation modelling study. BMC Health Services Research (ISSN 1472-6963). 20(117) doi: 10.1186/s12913-020-4943-y. 2020. Arkiv Prosjekt Fulltekst Data
2019
. Fewer ischemic strokes, despite an ageing population: stroke models from observed incidence in Norway 2010–2015. BMC Health Services Research (ISSN 1472-6963). 19(1) doi: 10.1186/s12913-019-4538-7. 2019. Arkiv
. Model Selection with Lasso in Multi-group Structural Equation Models. Structural Equation Modeling (ISSN 1070-5511). 27 doi: 10.1080/10705511.2019.1638262. 2019. Arkiv
. Erlang could have told you so - a case study of health policy without maths. Health Policy (ISSN 0168-8510). (123) pp 1282-1287. doi: 10.1016/j.healthpol.2019.09.014. 2019.
. Minimal unilateral peak nasal inspiratory flow correlates with patient reported nasal obstruction. Rhinology (ISSN 0300-0729). 57(6) pp 436-443. doi: 10.4193/Rhin19.178. 2019.
. Identifying menstrual migraine- improving the diagnostic criteria using a statistical method. The Journal of Headache and Pain (ISSN 1129-2369). 20(1) doi: 10.1186/s10194-019-1035-7. 2019. Arkiv
. Fast track hip fracture care and mortality – an observational study of 2230 patients. BMC Musculoskeletal Disorders (ISSN 1471-2474). 20 doi: 10.1186/s12891-019-2637-6. 2019. Arkiv
. A hybrid discrete event agent based overdue pregnancy outpatient clinic simulation model. Winter simulation conference : proceedings (ISSN 0891-7736). pp 1488-1499. doi: 10.1109/WSC.2018.8632282. 2019.
. Stroke incidence in the young: evidence from a Norwegian register study. Journal of Neurology (ISSN 0340-5354). pp 1-17. doi: 10.1007/s00415-018-9102-6. 2019.
2018
. Trolly dilemmas fail to predict ethical judgment in a hypothetical vaccination context. Journal of Empirical Research on Human Research Ethics (ISSN 1556-2646). 14(1) pp 23-32. doi: 10.1177/1556264618808175. 2018.
. Epidemiologi og prognoser i en medisinsk overvåkningsavdeling. Tidsskrift for Den norske legeforening (ISSN 0029-2001). 138(8) pp 734-739. doi: 10.4045/tidsskr.17.0496. 2018.
. The Burden of Stroke Mimics: Present and Future Projections. Journal of Stroke & Cerebrovascular Diseases (ISSN 1052-3057). 27(5) pp 1288-1295. doi: 10.1016/j.jstrokecerebrovasdis.2017.12.011. 2018.
. Combining bootstrap-based stroke incidence models with discrete event modeling of travel-time and stroke treatment: non-normal input and non-linear output. Winter simulation conference : proceedings (ISSN 0891-7736). pp 1670-1679. doi: 10.1109/WSC.2017.8247906. 2018.
2017
. Economic Productivity loss due to breast cancer in Norway - a case control study using the human capital approach. Nordic Journal of Health Economics (ISSN 1892-9729). doi: 10.5617/njhe.2981. 2017.
. One-year results of the SCANDIV randomized clinical trial of laparoscopic lavage versus primary resection for acute perforated diverticulitis. British Journal of Surgery (ISSN 0007-1323). 104(10) pp 1382-1392. doi: 10.1002/bjs.10567. 2017.
. Causes of higher symptomatic airway load in patients with chronic rhinosinusitis. BMC Ear, Nose and Throat Disorders (ISSN 1472-6815). 17(15) doi: 10.1186/s12901-017-0048-6. 2017.
. Do hybrid simulation models always increase flexibility to handle parametric and structural changes? Winter simulation conference : proceedings (ISSN 0891-7736). pp 1439-1450. doi: 10.1109/WSC.2016.7822196. 2017.
2016
. Integrative epigenome-wide analysis demonstrates that DNA methylation may mediate genetic risk in inflammatory bowel disease. Nature Communications (ISSN 2041-1723). 7 doi: 10.1038/ncomms13507. 2016.
. Conflicts or synergy when combining modeling approaches - Perspectives from psychology. Winter simulation conference : proceedings (ISSN 0891-7736). doi: 10.1109/WSC.2016.7822198. 2016.
. The influence of changes in activity-based financing on hospital readmissions for the elderly. Nordic Journal of Health Economics (ISSN 1892-9729). 4(2) pp 72-81. doi: 10.5617/njhe.992. 2016.
. Pre-contact by telephone increases response rates to postal questionnaires in a population of stroke patients: an open ended randomized controlled trial. BMC Health Services Research (ISSN 1472-6963). 16(1) doi: 10.1186/s12913-016-1732-8. 2016.
. Radiologist-initiated double reading of abdominal CT: Retrospective analysis of the clinical importance of changes to radiology reports. BMJ Quality and Safety (ISSN 2044-5415). 25(8) pp 595-603. doi: 10.1136/bmjqs-2015-004536. 2016.
. Double reading of current chest CT examinations: Clinical importance of changes to radiology reports. European Journal of Radiology (ISSN 0720-048X). 85(1) pp 199-204. doi: 10.1016/j.ejrad.2015.11.012. 2016.
2015
. Laparoscopic lavage vs primary resection for acute perforated diverticulitis: The SCANDIV randomized clinical trial. Journal of the American Medical Association (JAMA) (ISSN 0098-7484). 314(13) pp 1364-1375. doi: 10.1001/jama.2015.12076. 2015.
. Statistical Testing of Association Between Menstruation and Migraine. Headache (ISSN 0017-8748). 55(2) pp 229-240. doi: 10.1111/head.12457. 2015.
2014
. Physician gender, physician patient-centered behavior, and patient satisfaction: A study in three practice settings within a hospital. Patient Education and Counseling (ISSN 0738-3991). 95(3) pp 313-318. doi: 10.1016/j.pec.2014.03.015. 2014.
. Factors associated with a prolonged length of stay after acute exacerbation of chronic obstructive pulmonary disease (AECOPD). The International Journal of Chronic Obstructive Pulmonary Disease (ISSN 1176-9106). 9 pp 99-105. doi: 10.2147/COPD.S51467. 2014.
. A controlled study of income development for breast cancer survivors in Norway. Journal of cancer survivorship (ISSN 1932-2259). 8(2) pp 239-247. doi: 10.1007/s11764-013-0324-4. 2014.
2013
. The effect of activity-based financing on hospital length of stay for elderly patients suffering from heart diseases in Norway. BMC Health Services Research (ISSN 1472-6963). 13 doi: 10.1186/1472-6963-13-172. 2013.
. Readmissions for COPD: propensity case-matched comparison between pulmonary and non-pulmonary departments. Clinical Respiratory Journal (ISSN 1752-6981). 7(4) pp 375-381. doi: 10.1111/crj.12018. 2013.
. Improving hospital bed utilisation through simulation and optimisation: With application to a 40% increase in patient volume in a Norwegian general hospital. International Journal of Medical Informatics (ISSN 1386-5056). 82(2) pp 80-89. doi: 10.1016/j.ijmedinf.2012.05.006. 2013.
2012
. A Shortcut to Mean-Based Time Tradeoff Tariffs for the EQ-5D? Medical decision making (ISSN 0272-989X). 32(4) pp 569-577. doi: 10.1177/0272989X11431607. 2012.
. Specialist Physicians' sensitivity to patient affect and satisfaction. Medical Care (ISSN 0025-7079). 50(4) pp 290-293. doi: 10.1097/MLR.0b013e318242313e. 2012.
. Estimation of HIV incidence in Malawi from cross-sectional population-based sero-prevalence data. Journal of the International AIDS Society (ISSN 1758-2652). 15 doi: 10.1186/1758-2652-15-14. 2012.
. Does PACS improve diagnostic accuracy in chest radiograph interpretations in clinical practice? European Journal of Radiology (ISSN 0720-048X). 81(1) pp 173-177. doi: 10.1016/j.ejrad.2010.08.043. 2012.
. A critical re-evaluation of the regression model specification in the US D1 EQ-5D value function. Population Health Metrics (ISSN 1478-7954). 10 doi: 10.1186/1478-7954-10-2. 2012.
2011
. Using Soft Systems Methodology as a precursor for an emergency department simulation model. OR insight (ISSN 0953-5543). 24(3) pp 168-189. doi: 10.1057/ori.2011.8. 2011.
. Role of high-risk human papillomavirus (HPV) mRNA testing in the prediction of residual disease after conisation for high-grade cervical intraepithelial neoplasia. Gynecologic Oncology (ISSN 0090-8258). 123(2) pp 257-262. doi: 10.1016/j.ygyno.2011.07.032. 2011.
. The ability of a behaviour-specific patient questionnaire to identify poorly performing doctors. BMJ Quality and Safety (ISSN 2044-5415). 20(10) pp 885-893. doi: 10.1136/bmjqs-2011-000021. 2011.
. Effectiveness of a short course in clinical communication skills for hospital doctors: Results of a crossover randomized controlled trial (ISRCTN22153332). Patient Education and Counseling (ISSN 0738-3991). 84(2) pp 163-169. doi: 10.1016/j.pec.2010.08.028. 2011.
2010
. Simulating the influence of a 45% increase in patient volume on the emergency department of Akershus University Hospital. Winter simulation conference : proceedings (ISSN 0891-7736). pp 2455-2461. 2010.
. Interrater reliability for the Four Habits Coding Scheme as part of a randomized controlled trial. Patient Education and Counseling (ISSN 0738-3991). 80(3) pp 405-409. doi: 10.1016/j.pec.2010.06.032. 2010.
2009
. Simulating the Effect of Physician Triage in the Emergency Department of Akershus University Hospital. Winter simulation conference : proceedings (ISSN 0891-7736). pp 1896-1905. doi: 10.1109/WSC.2009.5429204. 2009.
2008
. Statistical modelling of wildwood mushroom abundance. Scandinavian Journal of Forest Research (ISSN 0282-7581). 23(3) pp 244-249. 2008.
. A randomised comparison of a four- and a five-point scale version of the Norwegian Function Assessment Scale. Health and Quality of Life Outcomes (ISSN 1477-7525). 6 doi: 10.1186/1477-7525-6-14. 2008.
. Data splitting as a countermeasure against hypothesis fishing: with a case study of predictors for low back pain. European Journal of Epidemiology (EJE) (ISSN 0393-2990). 23 doi: 10.1007/s10654-008-9230-x. 2008.
. Do clinicians read our reports? Integrating the radiology information system with the electronic patient record: experiences from the first 2 years. European Radiology (ISSN 0938-7994). 19 pp 31-36. doi: 10.1007/s00330-008-1098-3. 2008.
. Obesity and osteoarthritis in knee, hip and/or hand: An epidemiological study in the general population with 10 years follow-up. BMC Musculoskeletal Disorders (ISSN 1471-2474). 9 doi: 10.1186/1471-2474-9-132. 2008.
2007
. Convergence of random k-nearest-neighbour imputation. Computational Statistics & Data Analysis (ISSN 0167-9473). 51(12) pp 5913-5917. 2007.
. A robust conflict measure of inconsistencies in bayesian hierarchical models. Scandinavian Journal of Statistics (ISSN 0303-6898). 34 pp 816-828. doi: 10.1111/j.1467-9469.2007.00560.x. 2007.
2006
. How Online Learning Approaches Ornstein Uhlenbeck Processes. Neural Processing Letters (ISSN 1370-4621). 23 2006.
. On the Conservativeness of Posterior Predictive P-values. Statistics and Probability Letters (ISSN 0167-7152). 76 2006.
2005
. The lagging anchor model for game learning - a solution to the Crawford puzzle. Journal of Economic Behavior and Organization (ISSN 0167-2681). 57(3) pp 287-303. 2005.
. Representing human uncertainty by subjective likelihood estimates. International Journal of Approximate Reasoning (ISSN 0888-613X). 39 2005.
2002
. The lagging anchor algorithm: Reinforcement learning in two-player zero-sum games with imperfect information. Machine Learning (ISSN 0885-6125). 49(1) pp 5-37. 2002.
. A challenge to formal modeling of poker and bridge. Games and Economic Behavior (ISSN 0899-8256). 40(1) pp 147-149. 2002.
. Variance reduction for simulated diffusions using control variates extracted from state space evaluations. Applied Numerical Mathematics (ISSN 0168-9274). 43(4) pp 375-381. 2002.
2001
. Variance reduction for Markov chain processes using state space evaluation for control variates. Journal of the Operational Research Society (ISSN 0160-5682). 52(12) 2001.
2000
. Asymmetric co-evolution for imperfect-information zero-sum games. Lecture Notes in Computer Science (LNCS) (ISSN 0302-9743). 1810 pp 171-182. 2000.
. Minimax TD-learning with neural nets in a Markov game. Lecture Notes in Computer Science (LNCS) (ISSN 0302-9743). 1810 pp 117-128. 2000.
Letter to the editor
2020
. Do we need empirical research on the use of trolley dilemmas in applied ethics? Reply to commentary by Heidi Matisonn. 2020.
Academic chapter/article/Conference paper
2020
. Classification of Syncope Cases in Norwegian Medical Records. In: Proceedings of the 3rd Clinical Natural Language Processing Workshop. (ISBN 978-1-952148-74-3). pp 79-84. doi: 10.18653/v1/2020.clinicalnlp-1.9. 2020. Fulltekst
Academic lecture
2022
. Analyzing breast positioning in mammograms with graph convolutional networks. Visual Intelligence days 2022; Olavsgaard, 9/28/2022.
2019
. Classifying Norwegian radiology reports with deep learning. ORAHS 2019; KarlsRuhe, 7/28/2019 - 8/2/2019.
. The development of workshops to introduce computer simulation modelling health care decision-makers in familiar contexts. Den tredje nasjonale konferansen i helsetjenesteforskning; Scandic Nidelven hotell i Trondheim, 3/12/2019 - 3/13/2019.
. Driftsplanlegging i en kvinneklinikk ved hjelp av simuleringsmodellering. Jordmordagene 2019; Thon Hotel Vika Atrium, Oslo, 10/31/2019 - 11/1/2019.
. Slaginsidens i alle aldre – tidstrender og fremskrivninger. Hjerte- og karregisterseminaret 2019; Solstrand, Os, 3/13/2019 - 3/14/2019.
2018
. Improving chemotherapy drug production at Radium Hopsital Oslo. Helstejenesteforskningskonferansen; Oslo, 3/13/2018 - 3/14/2018.
. Fremskrivinger av forekomst av hjerneslag i Norge. Helsetjenesteforskningskonferansen 2018; Oslo, 3/13/2018 - 3/14/2018.
. Driftsplanlegging i en kvinneklinikk ved hjelp av simuleringsmodellering. Helsetjenesteforskningskonferansen 2018; Oslo, 3/13/2018 - 3/14/2018.
. Modellering av pasientflyt gjennom kommunale akutte døgnenheter. Nasjonal konferanse i helsetjenesteforskning; Oslo, 3/13/2018 - 3/14/2018.
. Occupancy and discharge in municipal acute units in Norway. ORAHS 2018 Conference; Oslo, 7/29/2018 - 8/3/2018.
2017
. Effects of stroke on labour force participation for patients and family caregivers. Nasjonal konferanse om helsetjenesteforskning, 3/13/2017 - 3/14/2017.
. Survival of the fittest? Frailty modelling of stroke incidence. ORAHS2017; Bath, 7/30/2017 - 10/4/2017.
. Using bootstrapping to reflect variance in resource demand in simulation modeling of patient flow; the case of stroke treatment in Norway. Operational Research Applied to Health Services 2017; Bath, 7/30/2017 - 8/4/2017.
. Effects of stroke on labour force participation for patients and family caregivers. Operational Research Applied to Health Services; Bath, 7/30/2017 - 8/4/2017.
. Modelling patient flows through municipal acute units in South-Eastern Norway. Operational Research Applied to Health Services; Bath, 7/31/2017 - 8/4/2017.
. Using a combined discrete event simulation agent based model to improve drug production at the Radium Hospital, Norway. Operational Research Applied to Health Services; Bath, 7/30/2017 - 8/4/2017.
. Simulation modelling of patient flow in the Obstetrics department at Akershus Universitetssykehus. Nasjonal forskningskonferanse i helsetjenesteforskning; Trondheim, 3/14/2017 - 3/15/2017.
2016
. Flexible healthcare hybrid simulation modeling. Operational Research Applied to Health Services 2016; Pamplona, 7/24/2016 - 7/29/2016.
. Association between hospital occupancy and mortality. Operational Research Applied to Health Services 2016; Pamplona, 7/24/2016 - 7/29/2016.
. Too obvious to mention? Some simple ways in which running empirical data directly through simulation models can be used to identify flaws in models and data. Operational Research Applied to Health Services 2016; Pamplona, 7/24/2016 - 7/29/2016.
2015
. Endringer av klinisk betydning ved dobbeltgransking av CT abdomen og bekken. Radiologisk Høstmøte 2015; Oslo, 10/20/2015 - 10/23/2015.
. Endringer av klinisk betydning ved dobbeltgransking av CT thorax. Radiologisk Høstmøte 2015; Oslo, 10/20/2015 - 10/23/2015.
. Clinical impact of double reading of thoracic CT. European Congress of Radiology (ECR); Wien, 3/4/2015 - 3/8/2015.
. Clinical impact of double reading of abdominal CT scans of surgical patients. European Congress of Radiology (ECR); Wien, 3/4/2015 - 3/8/2015.
2005
. An assessment of conflict measures in criticism of Bayesian hierarchical models. 25th European Meeting of Statisticians; Oslo, 7/24/2005 - 7/28/2005.
Poster
2022
. A two-stage mammography classification model using XAI for ROI detection. Visual Intelligence days 2022; Olavsgaard, 9/28/2022 - 9/29/2022.
. A mammography classification model trained from image labels only. NLDL 2022; Online, 1/10/2022.
. Explainability and uncertainty for classification of mammograms. NLDL 2022; Digital, 1/10/2022 - 3/12/2022.
2018
. Using a hybrid DES-AB simulation model to improve patient flow in an overdue pregnancy outpatient clinic. Operational Research Applied to Health Service; Oslo Sciecne Park, 7/29/2018 - 8/3/2018.
2017
. THE BURDEN OF STROKE MIMICS - THE PRESENT AND FUTURE PROJECTIONS. ESOC2017; Praha, 5/16/2017 - 5/18/2017.
. Is it possible to plan and improve patient flow in a post term pregnancy clinic? Operational Research Applied to Health Services 2017; Bath, 7/30/2017 - 8/4/2017.
2016
. How do we meet tomorrow’s needs for health care? Operational Research Applied to Health Services 2016; Pamplona, 7/24/2016 - 7/29/2016.
2006
. Eliciting decision weights from clinicians. SMDM 28th annual meeting; Boston, Massachusetts, 10/14/2006 - 10/17/2006.
. IT-based experience support for clinicians. Euro-SMDM 10th Biennial Conference; Birmingham, 6/11/2006 - 6/13/2006.
Report
2022
. Procedures for mammographic screening with machine learning. Norsk Regnesentral. NR-notat SAMBA/17/22. pp 16. 2022.
. Machine learning for screening mammography. Norsk Regnesentral. NR-notat SAMBA/18/22. pp 33. 2022.
2005
. DRIFTSKOSTNADSVEKST ESTIMERT MED BAYESIANSKE METODER. Forsvarets Forskningsinstitutt. (ISBN 82-464-0942-5) pp 16. 2005.
Popular scientific lecture
2019
. Kunstig intelligens i helseforskning – én forskers perspektiv. Storfellesmøtet 2019; NEM og REK, Trondheim, 10/16/2019 - 10/17/2019.
Reader opinion piece
2016
. Overbelegg og faregrense for dødelighet. Tidsskrift for Den norske legeforening, volume 136, 2016, pp. 1204.
2013
. Yes, the cross-over design is suitable for evaluation of the effect of an educational intervention. Patient Education and Counseling, volume 90, 10/19/2012, pp. 285.
2010
. Quantifying Information Content in Survey Data by Entropy. Entropy, volume 12, 2010, pp. 161.
. Do split your epidemiological data. European Journal of Epidemiology (EJE), volume 25, 2010, pp. 759.
2008
. Can linear regression model give reliable conclusions about the postoperative recovery? Bootstrap for case study in Mitic et al. 2007. Clinical Otolaryngology, volume 33, 2008, pp. 287.
| Name: | Fredrik Andreas Dahl |
| Title: | Seniorforsker / Senior Reseach Scientist |
| Phone: | (+47) +47 22 85 25 92 |
| Email: | fadahl [at] nr [dot] no |
| Scientific areas: | |
| Add to contacts (vCard) |
| Show publications |
Academic article
2022
. Prediction of occult atrial fibrillation in patients after cryptogenic stroke and transient ischaemic attack: PROACTIA. Europace (ISSN 1099-5129). 24(12) pp 1881-1888. doi: 10.1093/europace/euac092. 2022.
. Stroke unit demand in Norway – present and future estimates. BMC Health Services Research (ISSN 1472-6963). 22 doi: 10.1186/s12913-021-07385-1. 2022. Arkiv
. A mammography classification model trained from image labels only. Proceedings of the Northern Lights Deep Learning Workshop. doi: 10.7557/18.6244. 2022.
. The FLIPPED STEP study: A randomized controlled trial of flipped vs. traditional classroom teaching in a university-level statistics and epidemiology course. International Journal of Educational Research Open (ISSN 2666-3740). 3 doi: 10.1016/j.ijedro.2022.100197. 2022.
2021
. Systemic Inflammation in Preclinical Ulcerative Colitis. Gastroenterology (ISSN 0016-5085). 161(5) pp 1526-1539.e9. doi: 10.1053/j.gastro.2021.07.026. 2021.
. Langtidsprognose for pasienter innlagt i en medisinsk overvåkningsavdeling. Tidsskrift for Den norske legeforening (ISSN 0029-2001). 141(9) pp 1-9. doi: 10.4045/tidsskr.20.0961. 2021. Arkiv
. Neural classification of Norwegian radiology reports: using NLP to detect findings in CT-scans of children. BMC Medical Informatics and Decision Making (ISSN 1472-6947). 21(1) pp 1-8. doi: 10.1186/s12911-021-01451-8. 2021. Arkiv
. Stroke Mimics on the Stroke Unit – Temporal trends 2008–2017 at a large Norwegian university hospital. Acta Neurologica Scandinavica (ISSN 0001-6314). 144(6) pp 695-705. doi: 10.1111/ane.13527. 2021.
2020
. A Markov chain method for counting and modelling migraine attacks. Scientific Reports (ISSN 2045-2322). 10:3631 pp 1-10. doi: 10.1038/s41598-020-60505-5. 2020. Arkiv
. No Correlation Between Ethical Judgment in Trolley Dilemmas and Vaccine Scenarios for Nurse Specialist Students. Journal of Empirical Research on Human Research Ethics (ISSN 1556-2646). 15 pp 292-297. doi: 10.1177/1556264620911234. 2020. Arkiv
. Surgical site infection after hip fracture – mortality and risk factors: an observational cohort study of 1,709 patients. Acta Orthopaedica (ISSN 1745-3674). 91(3) pp 347-352. doi: 10.1080/17453674.2020.1717841. 2020. Arkiv
. Capacity and patient flow planning in post-term pregnancy outpatient clinics: a computer simulation modelling study. BMC Health Services Research (ISSN 1472-6963). 20(117) doi: 10.1186/s12913-020-4943-y. 2020. Arkiv Prosjekt Fulltekst Data
2019
. Fewer ischemic strokes, despite an ageing population: stroke models from observed incidence in Norway 2010–2015. BMC Health Services Research (ISSN 1472-6963). 19(1) doi: 10.1186/s12913-019-4538-7. 2019. Arkiv
. Model Selection with Lasso in Multi-group Structural Equation Models. Structural Equation Modeling (ISSN 1070-5511). 27 doi: 10.1080/10705511.2019.1638262. 2019. Arkiv
. Erlang could have told you so - a case study of health policy without maths. Health Policy (ISSN 0168-8510). (123) pp 1282-1287. doi: 10.1016/j.healthpol.2019.09.014. 2019.
. Minimal unilateral peak nasal inspiratory flow correlates with patient reported nasal obstruction. Rhinology (ISSN 0300-0729). 57(6) pp 436-443. doi: 10.4193/Rhin19.178. 2019.
. Identifying menstrual migraine- improving the diagnostic criteria using a statistical method. The Journal of Headache and Pain (ISSN 1129-2369). 20(1) doi: 10.1186/s10194-019-1035-7. 2019. Arkiv
. Fast track hip fracture care and mortality – an observational study of 2230 patients. BMC Musculoskeletal Disorders (ISSN 1471-2474). 20 doi: 10.1186/s12891-019-2637-6. 2019. Arkiv
. A hybrid discrete event agent based overdue pregnancy outpatient clinic simulation model. Winter simulation conference : proceedings (ISSN 0891-7736). pp 1488-1499. doi: 10.1109/WSC.2018.8632282. 2019.
. Stroke incidence in the young: evidence from a Norwegian register study. Journal of Neurology (ISSN 0340-5354). pp 1-17. doi: 10.1007/s00415-018-9102-6. 2019.
2018
. Trolly dilemmas fail to predict ethical judgment in a hypothetical vaccination context. Journal of Empirical Research on Human Research Ethics (ISSN 1556-2646). 14(1) pp 23-32. doi: 10.1177/1556264618808175. 2018.
. Epidemiologi og prognoser i en medisinsk overvåkningsavdeling. Tidsskrift for Den norske legeforening (ISSN 0029-2001). 138(8) pp 734-739. doi: 10.4045/tidsskr.17.0496. 2018.
. The Burden of Stroke Mimics: Present and Future Projections. Journal of Stroke & Cerebrovascular Diseases (ISSN 1052-3057). 27(5) pp 1288-1295. doi: 10.1016/j.jstrokecerebrovasdis.2017.12.011. 2018.
. Combining bootstrap-based stroke incidence models with discrete event modeling of travel-time and stroke treatment: non-normal input and non-linear output. Winter simulation conference : proceedings (ISSN 0891-7736). pp 1670-1679. doi: 10.1109/WSC.2017.8247906. 2018.
2017
. Economic Productivity loss due to breast cancer in Norway - a case control study using the human capital approach. Nordic Journal of Health Economics (ISSN 1892-9729). doi: 10.5617/njhe.2981. 2017.
. One-year results of the SCANDIV randomized clinical trial of laparoscopic lavage versus primary resection for acute perforated diverticulitis. British Journal of Surgery (ISSN 0007-1323). 104(10) pp 1382-1392. doi: 10.1002/bjs.10567. 2017.
. Causes of higher symptomatic airway load in patients with chronic rhinosinusitis. BMC Ear, Nose and Throat Disorders (ISSN 1472-6815). 17(15) doi: 10.1186/s12901-017-0048-6. 2017.
. Do hybrid simulation models always increase flexibility to handle parametric and structural changes? Winter simulation conference : proceedings (ISSN 0891-7736). pp 1439-1450. doi: 10.1109/WSC.2016.7822196. 2017.
2016
. Integrative epigenome-wide analysis demonstrates that DNA methylation may mediate genetic risk in inflammatory bowel disease. Nature Communications (ISSN 2041-1723). 7 doi: 10.1038/ncomms13507. 2016.
. Conflicts or synergy when combining modeling approaches - Perspectives from psychology. Winter simulation conference : proceedings (ISSN 0891-7736). doi: 10.1109/WSC.2016.7822198. 2016.
. The influence of changes in activity-based financing on hospital readmissions for the elderly. Nordic Journal of Health Economics (ISSN 1892-9729). 4(2) pp 72-81. doi: 10.5617/njhe.992. 2016.
. Pre-contact by telephone increases response rates to postal questionnaires in a population of stroke patients: an open ended randomized controlled trial. BMC Health Services Research (ISSN 1472-6963). 16(1) doi: 10.1186/s12913-016-1732-8. 2016.
. Radiologist-initiated double reading of abdominal CT: Retrospective analysis of the clinical importance of changes to radiology reports. BMJ Quality and Safety (ISSN 2044-5415). 25(8) pp 595-603. doi: 10.1136/bmjqs-2015-004536. 2016.
. Double reading of current chest CT examinations: Clinical importance of changes to radiology reports. European Journal of Radiology (ISSN 0720-048X). 85(1) pp 199-204. doi: 10.1016/j.ejrad.2015.11.012. 2016.
2015
. Laparoscopic lavage vs primary resection for acute perforated diverticulitis: The SCANDIV randomized clinical trial. Journal of the American Medical Association (JAMA) (ISSN 0098-7484). 314(13) pp 1364-1375. doi: 10.1001/jama.2015.12076. 2015.
. Statistical Testing of Association Between Menstruation and Migraine. Headache (ISSN 0017-8748). 55(2) pp 229-240. doi: 10.1111/head.12457. 2015.
2014
. Physician gender, physician patient-centered behavior, and patient satisfaction: A study in three practice settings within a hospital. Patient Education and Counseling (ISSN 0738-3991). 95(3) pp 313-318. doi: 10.1016/j.pec.2014.03.015. 2014.
. Factors associated with a prolonged length of stay after acute exacerbation of chronic obstructive pulmonary disease (AECOPD). The International Journal of Chronic Obstructive Pulmonary Disease (ISSN 1176-9106). 9 pp 99-105. doi: 10.2147/COPD.S51467. 2014.
. A controlled study of income development for breast cancer survivors in Norway. Journal of cancer survivorship (ISSN 1932-2259). 8(2) pp 239-247. doi: 10.1007/s11764-013-0324-4. 2014.
2013
. The effect of activity-based financing on hospital length of stay for elderly patients suffering from heart diseases in Norway. BMC Health Services Research (ISSN 1472-6963). 13 doi: 10.1186/1472-6963-13-172. 2013.
. Readmissions for COPD: propensity case-matched comparison between pulmonary and non-pulmonary departments. Clinical Respiratory Journal (ISSN 1752-6981). 7(4) pp 375-381. doi: 10.1111/crj.12018. 2013.
. Improving hospital bed utilisation through simulation and optimisation: With application to a 40% increase in patient volume in a Norwegian general hospital. International Journal of Medical Informatics (ISSN 1386-5056). 82(2) pp 80-89. doi: 10.1016/j.ijmedinf.2012.05.006. 2013.
2012
. A Shortcut to Mean-Based Time Tradeoff Tariffs for the EQ-5D? Medical decision making (ISSN 0272-989X). 32(4) pp 569-577. doi: 10.1177/0272989X11431607. 2012.
. Specialist Physicians' sensitivity to patient affect and satisfaction. Medical Care (ISSN 0025-7079). 50(4) pp 290-293. doi: 10.1097/MLR.0b013e318242313e. 2012.
. Estimation of HIV incidence in Malawi from cross-sectional population-based sero-prevalence data. Journal of the International AIDS Society (ISSN 1758-2652). 15 doi: 10.1186/1758-2652-15-14. 2012.
. Does PACS improve diagnostic accuracy in chest radiograph interpretations in clinical practice? European Journal of Radiology (ISSN 0720-048X). 81(1) pp 173-177. doi: 10.1016/j.ejrad.2010.08.043. 2012.
. A critical re-evaluation of the regression model specification in the US D1 EQ-5D value function. Population Health Metrics (ISSN 1478-7954). 10 doi: 10.1186/1478-7954-10-2. 2012.
2011
. Using Soft Systems Methodology as a precursor for an emergency department simulation model. OR insight (ISSN 0953-5543). 24(3) pp 168-189. doi: 10.1057/ori.2011.8. 2011.
. Role of high-risk human papillomavirus (HPV) mRNA testing in the prediction of residual disease after conisation for high-grade cervical intraepithelial neoplasia. Gynecologic Oncology (ISSN 0090-8258). 123(2) pp 257-262. doi: 10.1016/j.ygyno.2011.07.032. 2011.
. The ability of a behaviour-specific patient questionnaire to identify poorly performing doctors. BMJ Quality and Safety (ISSN 2044-5415). 20(10) pp 885-893. doi: 10.1136/bmjqs-2011-000021. 2011.
. Effectiveness of a short course in clinical communication skills for hospital doctors: Results of a crossover randomized controlled trial (ISRCTN22153332). Patient Education and Counseling (ISSN 0738-3991). 84(2) pp 163-169. doi: 10.1016/j.pec.2010.08.028. 2011.
2010
. Simulating the influence of a 45% increase in patient volume on the emergency department of Akershus University Hospital. Winter simulation conference : proceedings (ISSN 0891-7736). pp 2455-2461. 2010.
. Interrater reliability for the Four Habits Coding Scheme as part of a randomized controlled trial. Patient Education and Counseling (ISSN 0738-3991). 80(3) pp 405-409. doi: 10.1016/j.pec.2010.06.032. 2010.
2009
. Simulating the Effect of Physician Triage in the Emergency Department of Akershus University Hospital. Winter simulation conference : proceedings (ISSN 0891-7736). pp 1896-1905. doi: 10.1109/WSC.2009.5429204. 2009.
2008
. Statistical modelling of wildwood mushroom abundance. Scandinavian Journal of Forest Research (ISSN 0282-7581). 23(3) pp 244-249. 2008.
. A randomised comparison of a four- and a five-point scale version of the Norwegian Function Assessment Scale. Health and Quality of Life Outcomes (ISSN 1477-7525). 6 doi: 10.1186/1477-7525-6-14. 2008.
. Data splitting as a countermeasure against hypothesis fishing: with a case study of predictors for low back pain. European Journal of Epidemiology (EJE) (ISSN 0393-2990). 23 doi: 10.1007/s10654-008-9230-x. 2008.
. Do clinicians read our reports? Integrating the radiology information system with the electronic patient record: experiences from the first 2 years. European Radiology (ISSN 0938-7994). 19 pp 31-36. doi: 10.1007/s00330-008-1098-3. 2008.
. Obesity and osteoarthritis in knee, hip and/or hand: An epidemiological study in the general population with 10 years follow-up. BMC Musculoskeletal Disorders (ISSN 1471-2474). 9 doi: 10.1186/1471-2474-9-132. 2008.
2007
. Convergence of random k-nearest-neighbour imputation. Computational Statistics & Data Analysis (ISSN 0167-9473). 51(12) pp 5913-5917. 2007.
. A robust conflict measure of inconsistencies in bayesian hierarchical models. Scandinavian Journal of Statistics (ISSN 0303-6898). 34 pp 816-828. doi: 10.1111/j.1467-9469.2007.00560.x. 2007.
2006
. How Online Learning Approaches Ornstein Uhlenbeck Processes. Neural Processing Letters (ISSN 1370-4621). 23 2006.
. On the Conservativeness of Posterior Predictive P-values. Statistics and Probability Letters (ISSN 0167-7152). 76 2006.
2005
. The lagging anchor model for game learning - a solution to the Crawford puzzle. Journal of Economic Behavior and Organization (ISSN 0167-2681). 57(3) pp 287-303. 2005.
. Representing human uncertainty by subjective likelihood estimates. International Journal of Approximate Reasoning (ISSN 0888-613X). 39 2005.
2002
. The lagging anchor algorithm: Reinforcement learning in two-player zero-sum games with imperfect information. Machine Learning (ISSN 0885-6125). 49(1) pp 5-37. 2002.
. A challenge to formal modeling of poker and bridge. Games and Economic Behavior (ISSN 0899-8256). 40(1) pp 147-149. 2002.
. Variance reduction for simulated diffusions using control variates extracted from state space evaluations. Applied Numerical Mathematics (ISSN 0168-9274). 43(4) pp 375-381. 2002.
2001
. Variance reduction for Markov chain processes using state space evaluation for control variates. Journal of the Operational Research Society (ISSN 0160-5682). 52(12) 2001.
2000
. Asymmetric co-evolution for imperfect-information zero-sum games. Lecture Notes in Computer Science (LNCS) (ISSN 0302-9743). 1810 pp 171-182. 2000.
. Minimax TD-learning with neural nets in a Markov game. Lecture Notes in Computer Science (LNCS) (ISSN 0302-9743). 1810 pp 117-128. 2000.
Letter to the editor
2020
. Do we need empirical research on the use of trolley dilemmas in applied ethics? Reply to commentary by Heidi Matisonn. 2020.
Academic chapter/article/Conference paper
2020
. Classification of Syncope Cases in Norwegian Medical Records. In: Proceedings of the 3rd Clinical Natural Language Processing Workshop. (ISBN 978-1-952148-74-3). pp 79-84. doi: 10.18653/v1/2020.clinicalnlp-1.9. 2020. Fulltekst
Academic lecture
2022
. Analyzing breast positioning in mammograms with graph convolutional networks. Visual Intelligence days 2022; Olavsgaard, 9/28/2022.
2019
. Classifying Norwegian radiology reports with deep learning. ORAHS 2019; KarlsRuhe, 7/28/2019 - 8/2/2019.
. The development of workshops to introduce computer simulation modelling health care decision-makers in familiar contexts. Den tredje nasjonale konferansen i helsetjenesteforskning; Scandic Nidelven hotell i Trondheim, 3/12/2019 - 3/13/2019.
. Driftsplanlegging i en kvinneklinikk ved hjelp av simuleringsmodellering. Jordmordagene 2019; Thon Hotel Vika Atrium, Oslo, 10/31/2019 - 11/1/2019.
. Slaginsidens i alle aldre – tidstrender og fremskrivninger. Hjerte- og karregisterseminaret 2019; Solstrand, Os, 3/13/2019 - 3/14/2019.
2018
. Improving chemotherapy drug production at Radium Hopsital Oslo. Helstejenesteforskningskonferansen; Oslo, 3/13/2018 - 3/14/2018.
. Fremskrivinger av forekomst av hjerneslag i Norge. Helsetjenesteforskningskonferansen 2018; Oslo, 3/13/2018 - 3/14/2018.
. Driftsplanlegging i en kvinneklinikk ved hjelp av simuleringsmodellering. Helsetjenesteforskningskonferansen 2018; Oslo, 3/13/2018 - 3/14/2018.
. Modellering av pasientflyt gjennom kommunale akutte døgnenheter. Nasjonal konferanse i helsetjenesteforskning; Oslo, 3/13/2018 - 3/14/2018.
. Occupancy and discharge in municipal acute units in Norway. ORAHS 2018 Conference; Oslo, 7/29/2018 - 8/3/2018.
2017
. Effects of stroke on labour force participation for patients and family caregivers. Nasjonal konferanse om helsetjenesteforskning, 3/13/2017 - 3/14/2017.
. Survival of the fittest? Frailty modelling of stroke incidence. ORAHS2017; Bath, 7/30/2017 - 10/4/2017.
. Using bootstrapping to reflect variance in resource demand in simulation modeling of patient flow; the case of stroke treatment in Norway. Operational Research Applied to Health Services 2017; Bath, 7/30/2017 - 8/4/2017.
. Effects of stroke on labour force participation for patients and family caregivers. Operational Research Applied to Health Services; Bath, 7/30/2017 - 8/4/2017.
. Modelling patient flows through municipal acute units in South-Eastern Norway. Operational Research Applied to Health Services; Bath, 7/31/2017 - 8/4/2017.
. Using a combined discrete event simulation agent based model to improve drug production at the Radium Hospital, Norway. Operational Research Applied to Health Services; Bath, 7/30/2017 - 8/4/2017.
. Simulation modelling of patient flow in the Obstetrics department at Akershus Universitetssykehus. Nasjonal forskningskonferanse i helsetjenesteforskning; Trondheim, 3/14/2017 - 3/15/2017.
2016
. Flexible healthcare hybrid simulation modeling. Operational Research Applied to Health Services 2016; Pamplona, 7/24/2016 - 7/29/2016.
. Association between hospital occupancy and mortality. Operational Research Applied to Health Services 2016; Pamplona, 7/24/2016 - 7/29/2016.
. Too obvious to mention? Some simple ways in which running empirical data directly through simulation models can be used to identify flaws in models and data. Operational Research Applied to Health Services 2016; Pamplona, 7/24/2016 - 7/29/2016.
2015
. Endringer av klinisk betydning ved dobbeltgransking av CT abdomen og bekken. Radiologisk Høstmøte 2015; Oslo, 10/20/2015 - 10/23/2015.
. Endringer av klinisk betydning ved dobbeltgransking av CT thorax. Radiologisk Høstmøte 2015; Oslo, 10/20/2015 - 10/23/2015.
. Clinical impact of double reading of thoracic CT. European Congress of Radiology (ECR); Wien, 3/4/2015 - 3/8/2015.
. Clinical impact of double reading of abdominal CT scans of surgical patients. European Congress of Radiology (ECR); Wien, 3/4/2015 - 3/8/2015.
2005
. An assessment of conflict measures in criticism of Bayesian hierarchical models. 25th European Meeting of Statisticians; Oslo, 7/24/2005 - 7/28/2005.
Poster
2022
. A two-stage mammography classification model using XAI for ROI detection. Visual Intelligence days 2022; Olavsgaard, 9/28/2022 - 9/29/2022.
. A mammography classification model trained from image labels only. NLDL 2022; Online, 1/10/2022.
. Explainability and uncertainty for classification of mammograms. NLDL 2022; Digital, 1/10/2022 - 3/12/2022.
2018
. Using a hybrid DES-AB simulation model to improve patient flow in an overdue pregnancy outpatient clinic. Operational Research Applied to Health Service; Oslo Sciecne Park, 7/29/2018 - 8/3/2018.
2017
. THE BURDEN OF STROKE MIMICS - THE PRESENT AND FUTURE PROJECTIONS. ESOC2017; Praha, 5/16/2017 - 5/18/2017.
. Is it possible to plan and improve patient flow in a post term pregnancy clinic? Operational Research Applied to Health Services 2017; Bath, 7/30/2017 - 8/4/2017.
2016
. How do we meet tomorrow’s needs for health care? Operational Research Applied to Health Services 2016; Pamplona, 7/24/2016 - 7/29/2016.
2006
. Eliciting decision weights from clinicians. SMDM 28th annual meeting; Boston, Massachusetts, 10/14/2006 - 10/17/2006.
. IT-based experience support for clinicians. Euro-SMDM 10th Biennial Conference; Birmingham, 6/11/2006 - 6/13/2006.
Report
2022
. Procedures for mammographic screening with machine learning. Norsk Regnesentral. NR-notat SAMBA/17/22. pp 16. 2022.
. Machine learning for screening mammography. Norsk Regnesentral. NR-notat SAMBA/18/22. pp 33. 2022.
2005
. DRIFTSKOSTNADSVEKST ESTIMERT MED BAYESIANSKE METODER. Forsvarets Forskningsinstitutt. (ISBN 82-464-0942-5) pp 16. 2005.
Popular scientific lecture
2019
. Kunstig intelligens i helseforskning – én forskers perspektiv. Storfellesmøtet 2019; NEM og REK, Trondheim, 10/16/2019 - 10/17/2019.
Reader opinion piece
2016
. Overbelegg og faregrense for dødelighet. Tidsskrift for Den norske legeforening, volume 136, 2016, pp. 1204.
2013
. Yes, the cross-over design is suitable for evaluation of the effect of an educational intervention. Patient Education and Counseling, volume 90, 10/19/2012, pp. 285.
2010
. Quantifying Information Content in Survey Data by Entropy. Entropy, volume 12, 2010, pp. 161.
. Do split your epidemiological data. European Journal of Epidemiology (EJE), volume 25, 2010, pp. 759.
2008
. Can linear regression model give reliable conclusions about the postoperative recovery? Bootstrap for case study in Mitic et al. 2007. Clinical Otolaryngology, volume 33, 2008, pp. 287.
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