Publications 2021

Bretthauer M, Løberg M, Holme Ø, Adami HO, Kalager M (2021)
Deep learning and cancer biomarkers: recognising lead-time bias
Lancet, 397 (10270), 194
DOI 10.1016/S0140-6736(20)32402-8, PubMed 33453776

Wieszczy P, Kaminski MF, Løberg M, Bugajski M, Bretthauer M, Kalager M (2021)
Estimation of overdiagnosis in colorectal cancer screening with sigmoidoscopy and faecal occult blood testing: comparison of simulation models
BMJ Open, 11 (4), e042158
DOI 10.1136/bmjopen-2020-042158, PubMed 33853794

Publications 2020

Barua I, Vinsard DG, Jodal HC, Løberg M, Kalager M, Holme Ø, Misawa M, Bretthauer M, Mori Y (2020)
Artificial intelligence for polyp detection during colonoscopy: a systematic review and meta-analysis
Endoscopy, 53 (3), 277-284
DOI 10.1055/a-1201-7165, PubMed 32557490

Helsingen LM, Refsum E, Gjøstein DK, Løberg M, Bretthauer M, Kalager M, Emilsson L, Clinical Effectiveness Research group (2020)
The COVID-19 pandemic in Norway and Sweden - threats, trust, and impact on daily life: a comparative survey
BMC Public Health, 20 (1), 1597
DOI 10.1186/s12889-020-09615-3, PubMed 33097011

Loberg M, Bretthauer M (2020)
Presentation of numbers: do let that fool you
Tidsskr. Nor. Laegeforen., 140 (8), 738

Løberg M, Bretthauer M (2020)
Presentation of figures: don’t be fooled
Tidsskr Nor Laegeforen, 140 (8)
DOI 10.4045/tidsskr.20.0378, PubMed 32463198

Pedersen IB, Bretthauer M, Kalager M, Løberg M, Hoff G, Matapour S, Hugin S, Frigstad SO, Seip B, Kleist BA, Løvdal L, Botteri E, Holme Ø (2020)
Incomplete endoscopic resection of colorectal polyps: a prospective quality assurance study
Endoscopy, 53 (4), 383-391
DOI 10.1055/a-1243-0379, PubMed 32961579

Tønnesen CJ, Young J, Glomsaker T, Mala T, Løberg M, Bretthauer M, Refsum E, Aabakken L (2020)
Laparoscopy-assisted versus balloon enteroscopy-assisted ERCP after Roux-en-Y gastric bypass
Endoscopy, 52 (8), 654-661
DOI 10.1055/a-1139-9313, PubMed 32316042

Wieszczy P, Waldmann E, Løberg M, Regula J, Rupinski M, Bugajski M, Gray K, Kalager M, Ferlitsch M, Kaminski MF, Bretthauer M (2020)
Colonoscopist Performance and Colorectal Cancer Risk After Adenoma Removal to Stratify Surveillance: Two Nationwide Observational Studies
Gastroenterology, 160 (4), 1067-1074.e6
DOI 10.1053/j.gastro.2020.10.009, PubMed 33065063

Publications 2019

Bleijenberg A, Klotz D, Løberg M, Dekker E, Adami HO, Kuipers EJ, Holme Ø, Kalager M, Emilsson L, Kleist B, Løvdal L, Regula J, Løberg EM, IJspeert J, Bretthauer M (2019)
Implications of different guidelines for surveillance after serrated polyp resection in United States of America and Europe
Endoscopy, 51 (8), 750-758
DOI 10.1055/a-0916-8598, PubMed 31195423

Hoff G, Ursin G, Løberg M, de Lange T, Skovlund E, Holme Ø (2019)
Continuous development of colorectal cancer screening programs
Acta Oncol, 58 (6), 822-823
DOI 10.1080/0284186X.2019.1588475, PubMed 30939973

Refsum E, Helsingen LM, Jodal HC, Løberg M, Høstmælingen N, Kalager M (2019)
Data protection – an obstacle course
Tidsskr Nor Laegeforen, 139 (4)
DOI 10.4045/tidsskr.19.0077, PubMed 30808102

Refsum E, Helsingen LM, Jodal HC, Loberg M, Hostmaelingen N, Kalager M (2019)
Privacy - an obstacle course
Tidsskr. Nor. Laegeforen., 139 (4), 314-315

Sarjomaa M, Majak B, Ludolph T, Loberg M (2019)
Enlarged lymph nodes plus rash in a man of Mediterranean origin
Tidsskr. Nor. Laegeforen., 139 (6), 533-537

Sarjomaa M, Majak B, Ludolph T, Løberg M (2019)
Enlarged lymph nodes plus rash in a man of Mediterranean origin
Tidsskr Nor Laegeforen, 139 (6)
DOI 10.4045/tidsskr.18.0514, PubMed 30917647

Wieszczy P, Kaminski MF, Franczyk R, Loberg M, Kobiela J, Rupinska M, Kocot B, Rupinski M, Holme O, Wojciechowska U, Didkowska J, Ransohoff D, Bretthauer M, Kalager M, Regula J (2019)
Colorectal Cancer Incidence and Mortality After Removal of Adenomas During Screening Colonoscopies
Gastroenterology, 158 (4), 875-883.e5
DOI 10.1053/j.gastro.2019.09.011, PubMed 31563625

Publications 2018

Bretthauer M, Goderstad JM, Løberg M, Emilsson L, Ye W, Adami HO, Kalager M (2018)
Uterine morcellation and survival in uterine sarcomas
Eur J Cancer, 101, 62-68
DOI 10.1016/j.ejca.2018.06.007, PubMed 30025231

Holme Ø, Løberg M, Kalager M, Bretthauer M, Hernán MA, Aas E, Eide TJ, Skovlund E, Lekven J, Schneede J, Tveit KM, Vatn M, Ursin G, Hoff G, NORCCAP Study Group† (2018)
Long-Term Effectiveness of Sigmoidoscopy Screening on Colorectal Cancer Incidence and Mortality in Women and Men: A Randomized Trial
Ann Intern Med, 168 (11), 775-782
DOI 10.7326/M17-1441, PubMed 29710125

Holme Ø, Løberg M, Kalager M, Bretthauer M, Hoff G (2018)
Long-Term Effectiveness of Sigmoidoscopy Screening in Women and Men
Ann Intern Med, 169 (9), 663-664
DOI 10.7326/L18-0512, PubMed 30398636

Holme Ø, Pedersen IB, Medhus AW, Aabakken L, Glomsaker T, Kvamme JM, Løberg M, Bretthauer M, Seip B, Kjellevold Ø, Jørgensen A, Furholm S, Hoff G, de Lange T (2018)
Endoscopy assistants influence the quality of colonoscopy
Endoscopy, 50 (9), 871-877
DOI 10.1055/s-0044-101706, PubMed 29444529

Jodal HC, Løberg M, Holme Ø, Adami HO, Bretthauer M, Emilsson L, Ransohoff DF, Hoff G, Kalager M (2018)
Mortality From Postscreening (Interval) Colorectal Cancers Is Comparable to That From Cancer in Unscreened Patients-A Randomized Sigmoidoscopy Trial
Gastroenterology, 155 (6), 1787-1794.e3
DOI 10.1053/j.gastro.2018.08.035, PubMed 30165051

Juul FE, Garborg K, Bretthauer M, Skudal H, Øines MN, Wiig H, Rose Ø, Seip B, Lamont JT, Midtvedt T, Valeur J, Kalager M, Holme Ø, Helsingen L, Løberg M, Adami HO (2018)
Fecal Microbiota Transplantation for Primary Clostridium difficile Infection
N Engl J Med, 378 (26), 2535-2536
DOI 10.1056/NEJMc1803103, PubMed 29860912

Langeland H, Bergum D, Løberg M, Bjørnstad K, Damås JK, Mollnes TE, Skjærvold NK, Klepstad P (2018)
Transitions Between Circulatory States After Out-of-Hospital Cardiac Arrest: Protocol for an Observational, Prospective Cohort Study
JMIR Res Protoc, 7 (1), e17
DOI 10.2196/resprot.8558, PubMed 29351897

Løberg M, Kalager M, Hoff G (2018)
Tailoring the message with selective reporting
Eur J Epidemiol, 33 (8), 773
DOI 10.1007/s10654-018-0416-6, PubMed 29846866

Pedersen IB, Løberg M, Hoff G, Kalager M, Bretthauer M, Holme Ø (2018)
Polypectomy techniques among gastroenterologists in Norway - a nationwide survey
Endosc Int Open, 6 (7), E812-E820
DOI 10.1055/a-0607-0727, PubMed 29977999

Pinsky PF, Loberg M, Senore C, Wooldrage K, Atkin W, Bretthauer M, Cross AJ, Hoff G, Holme O, Kalager M, Segnan N, Schoen RE (2018)
Number of Adenomas Removed and Colorectal Cancers Prevented in Randomized Trials of Flexible Sigmoidoscopy Screening
Gastroenterology, 155 (4), 1059-1068.e2
DOI 10.1053/j.gastro.2018.06.040, PubMed 29935150

Publications 2017

Bretthauer M, Vandvik PO, Skjeldestad FE, Frich JC, de Lange T, Loberg M (2017)
New specialist education for doctors- from Swiss cheese to Kraftkar?
Tidsskr. Nor. Laegeforen., 137 (17), 1270-1271

Bretthauer M, Vandvik PO, Skjeldestad FE, Frich JC, Lange T, Løberg M (2017)
[New specialist training for physicians - from Swiss cheese to strongman?]
Tidsskr Nor Laegeforen, 137 (17)
DOI 10.4045/tidsskr.17.0637, PubMed 28925200

Emilsson L, Løberg M, Bretthauer M, Holme Ø, Fall K, Jodal HC, Adami HO, Kalager M (2017)
Colorectal cancer death after adenoma removal in Scandinavia
Scand J Gastroenterol, 52 (12), 1377-1384
DOI 10.1080/00365521.2017.1377763, PubMed 28906163

Holme Ø, Løberg M, Bretthauer M, Kalager M (2017)
Authors' reply to Doherty and Hawkins
BMJ, 356, j1267
DOI 10.1136/bmj.j1267, PubMed 28283482

Holme Ø, Schoen RE, Senore C, Segnan N, Hoff G, Løberg M, Bretthauer M, Adami HO, Kalager M (2017)
Effectiveness of flexible sigmoidoscopy screening in men and women and different age groups: pooled analysis of randomised trials
BMJ, 356, i6673
DOI 10.1136/bmj.i6673, PubMed 28087510

Løberg M, Holme Ø, Bretthauer M, Kalager M (2017)
Colorectal adenomas, surveillance, and cancer
Lancet Oncol, 18 (8), e427
DOI 10.1016/S1470-2045(17)30473-4, PubMed 28759374

Publications 2016

Adami HO, Csermely P, Veres DV, Emilsson L, Løberg M, Bretthauer M, Kalager M (2016)
Are rapidly growing cancers more lethal?
Eur J Cancer, 72, 210-214
DOI 10.1016/j.ejca.2016.11.011, PubMed 28042992

Berstad P, Botteri E, Larsen IK, Løberg M, Kalager M, Holme Ø, Bretthauer M, Hoff G (2016)
Lifestyle changes at middle age and mortality: a population-based prospective cohort study
J Epidemiol Community Health, 71 (1), 59-66
DOI 10.1136/jech-2015-206760, PubMed 27312250

Bretthauer M, Kaminski MF, Hassan C, Kalager M, Holme Ø, Hoff G, Løberg M, Regula J, Castells A, Adami HO (2016)
America, We Are Confused: The Updated U.S. Preventive Services Task Force Recommendation on Colorectal Cancer Screening
Ann Intern Med, 166 (2), 139-140
DOI 10.7326/M16-1805, PubMed 27820949

Bretthauer M, Kaminski MF, Løberg M, Zauber AG, Regula J, Kuipers EJ, Hernán MA, McFadden E, Sunde A, Kalager M, Dekker E, Lansdorp-Vogelaar I, Garborg K, Rupinski M, Spaander MC, Bugajski M, Høie O, Stefansson T, Hoff G, Adami HO, Nordic-European Initiative on Colorectal Cancer (NordICC) Study Group (2016)
Population-Based Colonoscopy Screening for Colorectal Cancer: A Randomized Clinical Trial
JAMA Intern Med, 176 (7), 894-902
DOI 10.1001/jamainternmed.2016.0960, PubMed 27214731

Garborg K, Wiig H, Hasund A, Matre J, Holme Ø, Noraberg G, Løberg M, Kalager M, Adami HO, Bretthauer M (2016)
Gradual stiffness versus magnetic imaging-guided variable stiffness colonoscopes: A randomized noninferiority trial
United European Gastroenterol J, 5 (1), 128-133
DOI 10.1177/2050640616639162, PubMed 28405331

Gjøstein DK, Bretthauer M, Løberg M (2016)
[Not Available]
Tidsskr Nor Laegeforen, 136 (16), 1326-7
DOI 10.4045/tidsskr.16.0690, PubMed 27637038

Gjøstein DK, Huitfeldt A, Løberg M, Adami HO, Garborg K, Kalager M, Bretthauer M (2016)
Incentives and participation in a medical survey
Tidsskr Nor Laegeforen, 136 (12-13), 1082-7
DOI 10.4045/tidsskr.15.1096, PubMed 27381786

Holme Ø, de Lange T, Stallemo A, Wiig H, Hasund A, Dvergsnes K, Garborg K, Ystrøm CM, Løberg M, Hoff G, Bretthauer M, Kalager M (2016)
Routine vs. on-demand analgesia in colonoscopy: a randomized clinical trial
Endoscopy, 48 (9), 823-8
DOI 10.1055/s-0042-108433, PubMed 27305424

Holme Ø, Hoff G, Løberg M (2016)
Colorectal Cancer Screening
JAMA, 316 (16), 1714
DOI 10.1001/jama.2016.13846, PubMed 27784085

Holme Ø, Løberg M (2016)
Methodological considerations for surveillance in GI practice
Best Pract Res Clin Gastroenterol, 30 (6), 867-878
DOI 10.1016/j.bpg.2016.10.011, PubMed 27938782

Jover R, Bretthauer M, Dekker E, Holme Ø, Kaminski MF, Løberg M, Zauber AG, Hernán MA, Lansdorp-Vogelaar I, Sunde A, McFadden E, Castells A, Regula J, Quintero E, Pellisé M, Senore C, Kalager M, Dinis-Ribeiro M, Emilsson L, Ransohoff DF, Hoff G, Adami HO (2016)
Rationale and design of the European Polyp Surveillance (EPoS) trials
Endoscopy, 48 (6), 571-8
DOI 10.1055/s-0042-104116, PubMed 27042931

Løberg M, Holme Ø, Kalager M (2016)
Aspirin, Colorectal Cancer, and Cause of Death: A Complex Landscape
J Clin Oncol, 35 (5), 568-569
DOI 10.1200/JCO.2016.70.3751, PubMed 29236619

Løberg M, Kalager M, Bretthauer M (2016)
Commentary: "Randomize, Then Consent" or "Consent, Then Randomize"?: Revitalizing the Issue of Preconsent Randomization
Epidemiology, 27 (3), 393-4
DOI 10.1097/EDE.0000000000000469, PubMed 26849639

MacKenzie TA, Løberg M, O'Malley AJ (2016)
Patient Centered Hazard Ratio Estimation Using Principal Stratification Weights: Application to the NORCCAP Randomized Trial of Colorectal Cancer Screening
Obs Stud, 2, 29-50
PubMed 29644344

Zahl PH, Holme Ø, Løberg M (2016)
Norwegian mammography screening - numerous self-contradictions in the evaluation
Tidsskr Nor Laegeforen, 136 (19), 1616-1618
DOI 10.4045/tidsskr.16.0165, PubMed 27790886

Publications 2015

Løberg M, Lousdal ML, Bretthauer M, Kalager M (2015)
Benefits and harms of mammography screening
Breast Cancer Res, 17, 63
DOI 10.1186/s13058-015-0525-z, PubMed 25928287

Moritz V, Bretthauer M, Holme Ø, Wang Fagerland M, Løberg M, Glomsaker T, de Lange T, Seip B, Sandvei P, Hoff G (2015)
Time trends in quality indicators of colonoscopy
United European Gastroenterol J, 4 (1), 110-20
DOI 10.1177/2050640615570147, PubMed 26966531

Swanson SA, Holme Ø, Løberg M, Kalager M, Bretthauer M, Hoff G, Aas E, Hernán MA (2015)
Bounding the per-protocol effect in randomized trials: an application to colorectal cancer screening
Trials, 16, 541
DOI 10.1186/s13063-015-1056-8, PubMed 26620120

Publications 2014

Berstad P, Løberg M, Larsen IK, Kalager M, Holme Ø, Botteri E, Bretthauer M, Hoff G (2014)
Long-term lifestyle changes after colorectal cancer screening: randomised controlled trial
Gut, 64 (8), 1268-76
DOI 10.1136/gutjnl-2014-307376, PubMed 25183203

Bretthauer M, Loberg M, Kalager M (2014)
Long-Term Colorectal-Cancer Mortality after Adenoma Removal REPLY
N. Engl. J. Med., 371 (21), 2035-2036

Bretthauer M, Løberg M, Kalager M (2014)
Long-term colorectal-cancer mortality after adenoma removal
N Engl J Med, 371 (21), 2036-7
DOI 10.1056/NEJMc1411954, PubMed 25409378

Holme Ø, Bretthauer M, Eide TJ, Løberg EM, Grzyb K, Løberg M, Kalager M, Adami HO, Kjellevold Ø, Hoff G (2014)
Long-term risk of colorectal cancer in individuals with serrated polyps
Gut, 64 (6), 929-36
DOI 10.1136/gutjnl-2014-307793, PubMed 25399542

Holme Ø, Loberg M, Kalager M (2014)
Colorectal cancer and the effect of flexible sigmoidoscopy screening--reply
JAMA, 312 (22), 2411-2
DOI 10.1001/jama.2014.14695, PubMed 25490338

Holme Ø, Løberg M, Kalager M, Bretthauer M, Hernán MA, Aas E, Eide TJ, Skovlund E, Schneede J, Tveit KM, Hoff G (2014)
Effect of flexible sigmoidoscopy screening on colorectal cancer incidence and mortality: a randomized clinical trial
JAMA, 312 (6), 606-15
DOI 10.1001/jama.2014.8266, PubMed 25117129

Løberg M, Kalager M, Holme Ø, Hoff G, Adami HO, Bretthauer M (2014)
Long-term colorectal-cancer mortality after adenoma removal
N Engl J Med, 371 (9), 799-807
DOI 10.1056/NEJMoa1315870, PubMed 25162886

Publications 2013

Hassan C, Quintero E, Dumonceau JM, Regula J, Brandão C, Chaussade S, Dekker E, Dinis-Ribeiro M, Ferlitsch M, Gimeno-García A, Hazewinkel Y, Jover R, Kalager M, Loberg M, Pox C, Rembacken B, Lieberman D, European Society of Gastrointestinal Endoscopy (2013)
Post-polypectomy colonoscopy surveillance: European Society of Gastrointestinal Endoscopy (ESGE) Guideline
Endoscopy, 45 (10), 842-51
DOI 10.1055/s-0033-1344548, PubMed 24030244

Kalager M, Løberg M, Fønnebø VM, Bretthauer M (2013)
Failure to account for selection-bias
Int J Cancer, 133 (11), 2751-3
DOI 10.1002/ijc.28244, PubMed 23649899

Publications 2012

Berstad P, Løberg M, Kalager M, Jørgensen A, Garborg K, Ruud HK, Bretthauer M, Hoff G (2012)
Risk stratification for advanced colorectal neoplasia--letter
Cancer Prev Res (Phila), 5 (12), 1405; author reply 1406
DOI 10.1158/1940-6207.CAPR-12-0383, PubMed 23151804

Kalager M, Løberg M, Bretthauer M (2012)
Limited use of nonprogram screening in Norway
Int J Cancer, 132 (7), 1723-4
DOI 10.1002/ijc.27807, PubMed 22933134

Publications 2011

Løberg M, Furholm S, Hoff I, Aabakken L, Hoff G, Bretthauer M (2011)
Nitrous oxide for analgesia in colonoscopy without sedation
Gastrointest Endosc, 74 (6), 1347-53
DOI 10.1016/j.gie.2011.07.071, PubMed 22136779

Publications 2008

Johansen PH, Loberg M, Piene R (2008)
Monoid hypersurfaces
GEOMETRIC MODELING AND ALGEBRAIC GEOMETRY, 55-77