Louise Emilsson

Associate Professor - Department of General Practice
Image of Louise Emilsson
Norwegian version of this page
Visiting address Kirkeveien 166 Fredrik Holsts hus 0450 Oslo
Postal address Postboks 1130 Blindern 0318 Oslo

Academic interests

  • Bowel cancer
  • Epidemiology - methods
  • Celiac disease
  • Screening
  • Registry and big data research
  • Causal inference
  • Statistical analysis
  • Clinical research

My research interests spans a broad range of topics within medicine, reflecting my clinical background as a specialist in general practice. I am particularly interested in epidemiological methodology, causal inference and spent my postdoc time with the causal inference group at Harvard School of Public health. I have extensive experience from big data analyses such as Swedish quality register, national health care registers and the American SEER-Medicare registers.

Courses taught

I teach in the MD program module 8 and I am also responsible for a 2-week elective class (MED3051) at University of Oslo. Further, I also teach EBM and research methodology at the MD programme at the Karolinska Institute in Stockholm. Recently I published a postgraduate tutorial methodology paper on how to emulate a randomized trial using observational data in SAGE research methods cases https://methods.sagepub.com/case/impact-statin-survive-cancer-patients-inference-emulate-target-trial

Work experience

  • 2020->: Associate professor, Universitetet i Oslo
  • 2019->: Specialist in general practice, Årjängs vårdcentral
  • 2015-2019: Postdoc, University of Oslo.
  • 2016-2018 Postdoc, Harvard School of Public Health, Boston, USA
  • 2011 -2019: Specialization in General practice, Vårdcentralen Värmlands Nysäter, Sverige
  • 2009-2011: Internship, Arvika, Sverige


  • 2017-2018: Certificate in Applied Biostatistics (84 AMA PRA Category 1 Credits TM), Harvard University, The Harvard Catalyst Education Program
  • 2013 Oktober: Ph.D, Örebro University, Sverige
  • 2003-2008: M.D., Karolinska Institute, Stockholm, Sverige
  • 2001-2002: Music teacher programme, first year, violin, Ingesund School of Music
  • 2000-2002: 1 full academic year mathematics (60hp) and one semester chemistry (30hp), Karlstad University


Awarded Best citation award at the 22nd WONCA meeting in Seoul https://cdn1.sph.harvard.edu/wp-content/uploads/sites/61/2019/04/HEPI-Newsletter-2019_final-pdf.pdf for the article «Examining Bias in Studies of Statin Treatment and Survival in Patients With Cancer», published in Jama Oncology.


EPoS - European Polyp Surveillance

NordICC - The Nordic-European Initiative on Colorectal Cancer

SAR - Surveillance after Adenoma Removal

I-SCAN - Risk of colorectal cancer in inflammatory bowel disease


Klinisk effektforskning https://www.med.uio.no/helsam/forskning/grupper/klinisk-effektforskning/

Jonas Ludvigsson https://staff.ki.se/people/joludv?_ga=2.266040971.565540786.1590478965-266275766.1553104945

Mingyang Song https://www.hsph.harvard.edu/mingyang-song/

Carol Semrad https://biologicalsciences.uchicago.edu/faculty/carol-semrad-md

Eric Wan https://fmpc.hku.hk/en/Our-Team/Academic-Academic-related-and-Medical-Staff/Dr-Eric-Wan/Dr-Eric-Wan


  • Emilsson, Louise; Semrad, Carol E.; Lebwohl, Benjamin; Green, Peter & Ludvigsson, Jonas F. (2020). Risk of Small Bowel Adenocarcinoma, Adenomas, and Carcinoids in a Nationwide Cohort of Individuals With Celiac Disease. Gastroenterology.  ISSN 0016-5085. . doi: 10.1053/j.gastro.2020.07.007 Full text in Research Archive.
  • Helsingen, Lise M.; Refsum, Erle; Gjøstein, Dagrun Kyte; Løberg, Magnus; Bretthauer, Michael; Kalager, Mette & Emilsson, Louise (2020). The COVID-19 pandemic in Norway and Sweden – threats, trust, and impact on daily life: a comparative survey. BMC Public Health.  ISSN 1471-2458.  20:1597, s 1- 10 . doi: 10.1186/s12889-020-09615-3 Full text in Research Archive.
  • Lebwohl, Benjamin; Haggård, Linnea; Emilsson, Louise; Söderling, Jonas; Roelstrate, Bjorn; Green, Peter; Butwicka, Agnieszka & Ludvigsson, Jonas F. (2020). Psychiatric Disorders in Patients With a Diagnosis of Celiac Disease During Childhood From 1973 to 2016. Clinical Gastroenterology and Hepatology.  ISSN 1542-3565. . doi: 10.1016/j.cgh.2020.08.018 Full text in Research Archive.
  • Rehnberg, Johanna; Symreng, Adina; Ludvigsson, Jonas F. & Emilsson, Louise (2020). Inflammatory Bowel Disease Is More Common in Patients with IgA Nephropathy and Predicts Progression of ESKD: A Swedish Population-Based Cohort Study. Journal of the American Society of Nephrology.  ISSN 1046-6673. . doi: 10.1681/ASN.2020060848
  • Song, Mingyang; Emilsson, Louise; Bozorg, Soran R.; Nguyen, Long Hoang; Joshi, Amit; Staller, Kyle; Nayor, Jennifer; Chan, Andrew & Ludvigsson, Jonas F. (2020). Risk of colorectal cancer incidence and mortality after polypectomy: a Swedish record-linkage study. The Lancet Gastroenterology and Hepatology.  ISSN 2468-1253. . doi: 10.1016/S2468-1253(20)30009-1
  • Song, Mingyang; Emilsson, Louise; Hultcrantz, Rolf; Roelstraete, Bjorn & Ludvigsson, Jonas F. (2020). Long-Term Incidence and Mortality of Colorectal Cancer After Endoscopic Biopsy With Normal Mucosa: A Swedish-Matched Cohort Study. American Journal of Gastroenterology.  ISSN 0002-9270. . doi: 10.14309/ajg.0000000000001018
  • Song, Mingyang; Nguyen, Long Hoang; Emilsson, Louise; Chan, Andrew & Ludvigsson, Jonas F. (2020). Antibiotic Use Associated With Risk of Colorectal Polyps in a Nationwide Study. Clinical Gastroenterology and Hepatology.  ISSN 1542-3565. . doi: 10.1016/j.cgh.2020.05.036 Full text in Research Archive.
  • Bleijenberg, Arne; Klotz, Dagmar; Løberg, Magnus; Dekker, Evelien; Adami, Hans Olov; Kuipers, Ernst J.; Holme, Øyvind; Kalager, Mette; Emilsson, Louise; Kleist, Britta; Løvdal, Leif; Régula, Jarosław; Løberg, Else Marit; Ijspeert, Joep & Bretthauer, Michael (2019). Implications of different guidelines for surveillance after serrated polyp resection in United States of America and Europe. Endoscopy.  ISSN 0013-726X.  51(8), s 750- 758 . doi: 10.1055/a-0916-8598
  • Bozorg, Soran R.; Song, Mingyang; Emilsson, Louise & Ludvigsson, Jonas F. (2019). Validation of serrated polyps (SPs) in Swedish pathology registers. BMC Gastroenterology.  ISSN 1471-230X.  20:3(1), s 1- 10 . doi: 10.1186/s12876-019-1134-6
  • Jodal, Henriette C.; Helsingen, Lise M.; Anderson, Joseph C.; Lytvyn, Lyubov; Vandvik, Per Olav & Emilsson, Louise (2019). Colorectal cancer screening with faecal testing, sigmoidoscopy or colonoscopy: a systematic review and network meta-analysis. BMJ Open.  ISSN 2044-6055.  9(10), s 1- 18 . doi: 10.1136/bmjopen-2019-032773
  • Bretthauer, Michael; Goderstad, Jeanne Mette; Løberg, Magnus; Emilsson, Louise; Ye, Weimin; Adami, Hans Olov & Kalager, Mette (2018). Uterine morcellation and survival in uterine sarcomas. European Journal of Cancer.  ISSN 0959-8049.  101, s 62- 68 . doi: 10.1016/j.ejca.2018.06.007
  • Emilsson, Louise; García-Albéniz, Xabier; Logan, Roger W.; Caniglia, E.C.; Kalager, Mette & Hernan, Miguel A. (2018). Examining Bias in Studies of Statin Treatment and Survival in Patients With Cancer.. JAMA Oncology.  ISSN 2374-2437.  4(1), s 63- 70 . doi: 10.1001/jamaoncol.2017.2752
  • Emilsson, Louise; Lebwohl, Benjamin; Green, Peter H R; Murray, Joseph A; Mårild, Karl Staffan & Ludvigsson, Jonas F (2018). Mucosal healing and the risk of serious infections in patients with celiac disease. United European Gastroenterology journal.  ISSN 2050-6406.  6(1), s 55- 62 . doi: 10.1177/2050640617707868
  • Jodal, Henriette Cecilie; Løberg, Magnus; Holme, Øyvind; Adami, Hans Olov; Bretthauer, Michael; Emilsson, Louise; Ransohoff, David F.; Hoff, Geir & Kalager, Mette (2018). Mortality from post-screening (interval) colorectal cancers is comparable to that from cancer in unscreened patients-a randomized sigmoidoscopy trial. Gastroenterology.  ISSN 0016-5085.  155(6), s 1787- 1794 . doi: 10.1053/j.gastro.2018.08.035
  • Ludvigsson, Jonas F.; Choung, Rok Seon; Marietta, Eric V; Murray, Joseph A. & Emilsson, Louise (2018). Increased risk of herpes zoster in patients with coeliac disease – nationwide cohort study. Scandinavian Journal of Public Health.  ISSN 1403-4948.  46(8), s 859- 866 . doi: 10.1177/1403494817714713
  • Ludvigsson, Jonas F.; Lebwohl, Benjamin; Chen, Qi; Bröms, Gabriella; Wolf, Randi L; Green, Peter H.R. & Emilsson, Louise (2018). Anxiety after coeliac disease diagnosis predicts mucosal healing: a population-based study. Alimentary Pharmacology and Therapeutics.  ISSN 0269-2813.  48(10), s 1091- 1098 . doi: 10.1111/apt.14991
  • Plate, Susann; Emilsson, Louise; Soderberg, Martin; Brandberg, Yvonne & Wärnberg, Fredrik (2018). High experienced continuity in breast cancer care is associated with high health related quality of life. BMC Health Services Research.  ISSN 1472-6963.  18(127) . doi: 10.1186/s12913-018-2925-0
  • Adami, Hans Olov; Csermely, Peter; Veres, DV; Emilsson, Louise; Løberg, Magnus; Bretthauer, Michael & Kalager, Mette (2017). Are rapidly growing cancers more lethal?. European Journal of Cancer.  ISSN 0959-8049.  72, s 210- 214 . doi: 10.1016/j.ejca.2016.11.011
  • Emilsson, Louise; Holme, Øyvind; Bretthauer, Michael; Cook, Nancy R.; Buring, Julie E.; Løberg, Magnus; Adami, Hans Olov; Sesso, Howard D.; Gaziano, Mike & Kalager, Mette (2017). Systematic review with meta-analysis: the comparative effectiveness of aspirin vs. screening for colorectal cancer prevention. Alimentary Pharmacology and Therapeutics.  ISSN 0269-2813.  45(2), s 193- 204 . doi: 10.1111/apt.13857
  • Emilsson, Louise; Løberg, Magnus; Bretthauer, Michael; Holme, Øyvind; Fall, Katja; Jodal, Henriette Cecilie; Adami, Hans Olov & Kalager, Mette (2017). Colorectal cancer death after adenoma removal in Scandinavia. Scandinavian Journal of Gastroenterology.  ISSN 0036-5521.  52(12), s 1377- 1384 . doi: 10.1080/00365521.2017.1377763
  • Kuja-Halkola, Ralf; Lebwohl, Benjamin; Halfvarson, Jonas; Emilsson, Louise; Magnusson, Patrik K. & Ludvigsson, Jonas F. (2017). Birth weight, sex, and celiac disease: A nationwide twin study. Clinical Epidemiology.  ISSN 1179-1349.  9, s 567- 577 . doi: 10.2147/CLEP.S149181
  • Ludvigsson, JF; Roy, A; Lebwohl, Benjamin; Green, PH & Emilsson, Louise (2017). Anxiety and depression in caregivers of individuals with celiac disease - A population-based study.. Digestive and Liver Disease.  ISSN 1590-8658.  49(3), s 273- 279 . doi: 10.1016/j.dld.2016.11.006
  • Øines, Mari Nanna; Helsingen, Lise M.; Bretthauer, Michael & Emilsson, Louise (2017). Epidemiology and risk factors of colorectal polyps. Baillière's Best Practice & Research : Clinical Gastroenterology.  ISSN 1521-6918.  31(4), s 419- 424 . doi: 10.1016/j.bpg.2017.06.004
  • Adami, Hans Olov; Bretthauer, Michael; Emilsson, Louise; Hernan, Miguel A.; Kalager, Mette; Ludvigsson, Jonas F. & Ekbom, Anders (2016). The continuing uncertainty about cancer risk in inflammatory bowel disease. Gut.  ISSN 0017-5749.  65(6), s 889- 893 . doi: 10.1136/gutjnl-2015-311003
  • Emilsson, Louise; Abdul Sultan, Alyshah & Ludvigsson, Jonas F. (2016). No increased mortality in 109,000 first-degree relatives of celiac individuals. Digestive and Liver Disease.  ISSN 1590-8658.  48(4), s 376- 380 . doi: 10.1016/j.dld.2015.11.016
  • Emilsson, Louise; Murray, Joseph; Leffler, Daniel A. & Ludvigsson, Jonas F. (2016). Cancer in first-degree relatives of people with celiac disease. Medicine.  ISSN 0025-7974.  95(32) . doi: 10.1097/MD.0000000000004588
  • Jover, Rodrigo; Bretthauer, Michael; Dekker, Evelien; Holme, Øyvind; Kaminski, Michal Filip; Løberg, Magnus; Zauber, AG; Hernan, Miguel A.; Lansdorp-Vogelaar, I; Sunde, Annike; McFadden, Elenaor; Castells, A; Regula, Jaroslaw; Quintero, Enrique; Pellise, Maria; Senore, Carlo; Kalager, Mette; Dinis-Ribeiro, Mario; Emilsson, Louise; Ransohoff, David F.; Hoff, Geir & Adami, Hans Olov (2016). Rationale and design of the European Polyp Surveillance (EPoS) trials. Endoscopy.  ISSN 0013-726X.  48(6), s 571- 578 . doi: 10.1055/s-0042-104116
  • Ludvigsson, JF; Jarrick, S; Murray, JA & Emilsson, Louise (2016). Celiac Disease and Risk of Henoch-Schonlein Purpura: Population-based Cohort Study.. Journal of Clinical Gastroenterology.  ISSN 0192-0790.  52(2), s 141- 145 . doi: 10.1097/MCG.0000000000000750
  • Emilsson, Louise; Lebwohl, Benjamin; Sundström, Johan & Ludvigsson, Jonas F. (2015). Cardiovascular disease in patients with coeliac disease: A systematic review and meta-analysis. Digestive and Liver Disease.  ISSN 1590-8658.  47(10), s 847- 852 . doi: 10.1016/j.dld.2015.06.004
  • Emilsson, Louise; Lindahl, B; Köster, M.; Lambe, M & Ludvigsson, Jonas F. (2015). Review of 103 Swedish Healthcare Quality Registries. Journal of Internal Medicine.  ISSN 0954-6820.  277(1), s 94- 136 . doi: 10.1111/joim.12303
  • Emilsson, Louise; Magnus, Maria Christine & Størdal, Ketil (2015). Perinatal risk factors for development of celiac disease in children, based on the prospective Norwegian Mother and Child Cohort Study. Clinical Gastroenterology and Hepatology.  ISSN 1542-3565.  13(5), s 921- 927 . doi: 10.1016/j.cgh.2014.10.012 Show summary
  • Emilsson, Louise; Wijmenga, Cisca; Murray, Joseph A. & Ludvigsson, Jonas F. (2015). Autoimmune disease in first-degree relatives and spouses of individuals with celiac disease. Clinical Gastroenterology and Hepatology.  ISSN 1542-3565.  13(7), s 1271- 1277 . doi: 10.1016/j.cgh.2015.01.026

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  • Emilsson, Louise & Ludvigsson, Jonas F. (2019). Letter: anxiety after coeliac disease diagnosis predicts mucosal healing?a population-based study. Authors? reply. Alimentary Pharmacology and Therapeutics.  ISSN 0269-2813.  49(5), s 620 . doi: 10.1111/apt.15130
  • Emilsson, Louise; García-Albéniz, Xabier & Hernan, MA (2018). Association of Statin Use With Overall and Cancer Survival-Reply. JAMA Oncology.  ISSN 2374-2437.  4(7), s 1016- 1017 . doi: 10.1001/jamaoncol.2018.0736
  • Emilsson, Louise; Roy, Abhik; Lebwohl, Benjamin; Green, Peter H.R. & Ludvigsson, Jonas F. (2018). Depression and anxiety in caregivers of patients with celiac disease. Author's reply. Digestive and Liver Disease.  ISSN 1590-8658.  50(3), s 320- 321 . doi: 10.1016/j.dld.2017.12.024
  • Jodal, Henriette Cecilie; Løberg, Magnus; Emilsson, Louise; Adami, Hans Olov; Bretthauer, Michael & Kalager, Mette (2018). Surveillance after Adenoma Removal (SAR): en case-kohort studie.
  • Bretthauer, Michael; Kamiński, Michał Filip; Emilsson, Louise & Adami, Hans-Olov (2017). Uppföljning efter polypektomi: riktlinjer, tro och evidens. Läkartidningen.  ISSN 0023-7205.  6, s 114
  • Emilsson, Louise & Semrad, Carol E. (2017). Obesity, Metabolic Syndrome, and Cardiac Risk Factors: Going Gluten-Free, for Better or Worse?. Digestive Diseases and Sciences.  ISSN 0163-2116.  62(9), s 2215- 2216 . doi: 10.1007/s10620-017-4649-0
  • Løberg, Magnus; Emilsson, Louise; Jodal, Henriette Cecilie; Bretthauer, Michael; Holme, Øyvind; Adami, Hans Olov & Kalager, Mette (2016). Surveillance After Adenoma Removal: Does It Make a Difference?.

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Published Mar. 17, 2015 2:39 PM - Last modified Dec. 3, 2020 10:40 AM