Publications 2021

Barua I, Vinsard DG, Jodal HC, Loberg M, Kalager M, Holme O, Misawa M, Bretthauer M, Mori Y (2021)
Artificial intelligence for polyp detection during colonoscopy: a systematic review and meta-analysis
Endoscopy, 53 (03), 277-284
DOI 10.1055/a-1201-7165

Bretthauer M, Helsingen LM, Loberg M, Kalager M, Guyatt G (2021)
Evidence and Precaution for Legal Health Interventions: Learning From the COVID-19 Pandemic
Ann. Intern. Med., 174 (10), 1456-+
DOI 10.7326/M21-2839

Bretthauer M, Loberg M, Holme O, Adami HO, Kalager M (2021)
Deep learning and cancer biomarkers: recognising lead-time bias
Lancet, 397 (10270), 194

Helsingen LM, Loberg M, Refsum E, Gjostein DK, Wieszczy P, Olsvik O, Juul FE, Barua I, Jodal HC, Herfindal M, Mori Y, Jore S, Lund-Johansen F, Fretheim A, Bretthauer M, Kalager M, TRAiN Study Grp (2021)
Covid-19 transmission in fitness centers in Norway-a randomized trial
BMC Public Health, 21 (1), 2103
DOI 10.1186/s12889-021-12073-0

Jodal HC, Klotz D, Herfindal M, Barua I, Tag P, Helsingen LM, Refsum E, Holme O, Adami HO, Bretthauer M, Kalager M, Loberg M (2021)
Long-term colorectal cancer incidence and mortality after adenoma removal in women and men
Aliment. Pharmacol. Ther.
DOI 10.1111/apt.16686

Juul FE, Jodal HC, Barua I, Refsum E, Olsvik O, Helsingen LM, Loberg M, Bretthauer M, Kalager M, Emilsson L (2021)
Mortality in Norway and Sweden during the COVID-19 pandemic
Scand. J. Public Health, 14034948211047137
DOI 10.1177/14034948211047137

Langeland H, Bergum D, Nordseth T, Loberg M, Skaug T, Bjornstad K, Gundersen O, Skjaervold NK, Klepstad P (2021)
Circulatory trajectories after out-of-hospital cardiac arrest: a prospective cohort study
BMC Anesthesiol., 21 (1), 219
DOI 10.1186/s12871-021-01434-2

Pedersen IB, Bretthauer M, Kalager M, Loberg M, Hoff G, Matapour S, Hugin S, Frigstad SO, Seip B, Kleist BA, Lovdal L, Botteri E, Holme O (2021)
Incomplete endoscopic resection of colorectal polyps: a prospective quality assurance study
Endoscopy, 53 (04), 383-391
DOI 10.1055/a-1243-0379

Tonnesen CJ, Hjelmesaeth J, Hofso D, Tonstad S, Hertel JK, Heggen E, Johnson LK, Mathisen TE, Kalager M, Wieszczy P, Medhus AW, Loberg M, Aabakken L, Bretthauer M (2021)
A novel intragastric balloon for treatment of obesity and type 2 diabetes. A two-center pilot trial
Scand. J. Gastroenterol.
DOI 10.1080/00365521.2021.1994641

Wieszczy P, Waldmann E, Loberg M, Regula J, Rupinski M, Bugajski M, Gray K, Kalager M, Ferlitsch M, Kaminski MF, Bretthauer M (2021)
Colonoscopist Performance and Colorectal Cancer Risk After Adenoma Removal to Stratify Surveillance: Two Nationwide Observational Studies
Gastroenterology, 160 (4), 1067-+
DOI 10.1053/j.gastro.2020.10.009

Publications 2020

Helsingen LM, Refsum E, Gjostein DK, Loberg M, Bretthauer M, Kalager M, Emilsson L, Clinical Effectiveness Res Grp (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

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

Tonnesen CJ, Young J, Glomsaker T, Mala T, Loberg M, Bretthauer M, Refsum E, Aabakken L (2020)
Laparoscopy-assisted versus balloon enteroscopy-assisted ERCP after Roux-en-Y gastric bypass
Endoscopy, 52 (08), 654-661
DOI 10.1055/a-1139-9313

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 (2020)
Colorectal Cancer Incidence and Mortality After Removal of Adenomas During Screening Colonoscopies
Gastroenterology, 158 (4), 875-+
DOI 10.1053/j.gastro.2019.09.011

Publications 2019

Bleijenberg A, Klotz D, Loberg M, Dekker E, Adami HO, Kuipers EJ, Holme O, Kalager M, Emilsson L, Kleist B, Lovdal L, Regula J, Loberg E, 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

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

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

Publications 2018

Bretthauer M, Goderstad JM, Loberg M, Emilsson L, Ye WM, 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

Holme O, Loberg M, Kalager M, Bretthauer M, Hernan MA, Aas E, Eide TJ, Skovlund E, Lekven J, Schneede J, Tveit KM, Vatn M, Ursin G, Hoff G, NORCCAP Study Grp (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-+
DOI 10.7326/M17-1441

Holme O, Loberg M, Kalager M, Bretthauer M, Hoff G (2018)
Long-Term Effectiveness of Sigmoidoscopy Screening in Women and Men RESPONSE
Ann. Intern. Med., 169 (9), 663-+
DOI 10.7326/L18-0512

Holme O, Pedersen IB, Medhus AW, Aabakken L, Glomsaker T, Kvamme JM, Loberg M, Bretthauer M, Seip B, Kjellevold O, Jorgensen 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

Jodal HC, Loberg M, Holme O, 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-+
DOI 10.1053/j.gastro.2018.08.035

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

Langeland H, Bergum D, Loberg M, Bjornstad K, Damas JK, Mollnes TE, Skjaervold 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

Loberg 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

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

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-+
DOI 10.1053/j.gastro.2018.06.040

Publications 2017

Adami HO, Csermely P, Veres DV, Emilsson L, Loberg M, Bretthauer M, Kalager M (2017)
Are rapidly growing cancers more lethal?
Eur. J. Cancer, 72, 210-214
DOI 10.1016/j.ejca.2016.11.011

Berstad P, Botteri E, Larsen IK, Loberg M, Kalager M, Holme O, Bretthauer M, Hoff G (2017)
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

Bretthauer M, Kaminski MF, Hassan C, Kalager M, Holme O, Hoff G, Loberg M, Regula J, Castells A, Adami HO (2017)
America, We Are Confused: The Updated US Preventive Services Task Force Recommendation on Colorectal Cancer Screening
Ann. Intern. Med., 166 (2), 139-+
DOI 10.7326/M16-1805

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

Emilsson L, Loberg M, Bretthauer M, Holme O, 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

Garborg K, Wiig H, Hasund A, Matre J, Holme O, Noraberg G, Loberg M, Kalager M, Adami HO, Bretthauer M (2017)
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

Holme O, Loberg M, Bretthauer M, Kalager M (2017)
FLEXIBLE SIGMOIDOSCOPY SCREENING Numbers needed to treat and to harm should be included in research
BMJ-British Medical Journal, 356, j1267
DOI 10.1136/bmj.j1267

Holme O, Schoen RE, Senore C, Segnan N, Hoff G, Loberg 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-British Medical Journal, 356, i6673
DOI 10.1136/bmj.i6673

Loberg M, Holme O, Bretthauer M, Kalager M (2017)
Colorectal adenomas, surveillance, and cancer
Lancet Oncol., 18 (8), E427
DOI 10.1016/S1470-2045(17)30473-4

Loberg M, Holme O, Kalager M (2017)
Aspirin, Colorectal Cancer, and Cause of Death: A Complex Landscape
J. Clin. Oncol., 35 (5), 568-+
DOI 10.1200/JCO.2016.70.3751

Publications 2016

Bretthauer M, Kaminski MF, Loberg M, Zauber AG, Regula J, Kuipers EJ, Hernan MA, McFadden E, Sunde A, Kalager M, Dekker E, Lansdorp-Vogelaar I, Garborg K, Rupinski M, Spaander MCW, Bugajski M, Hoie O, Stefansson T, Hoff G, Adami HO, Nordic-European Initiative Colorec (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

Gjostein DK, Bretthauer M, Loberg M (2016)
Incentives and participation in a medical survey reply
Tidsskr. Nor. Laegeforen., 136 (16), 1326-1327
DOI 10.4045/tidsskr.16.0690

Gjostein DK, Huitfeldt A, Loberg M, Adami HO, Garborg K, Kalager M, Bretthauer M (2016)
Incentives and participation in a medical survey
Tidsskr. Nor. Laegeforen., 136 (12-13), 1082-1087
DOI 10.4045/tidsskr.15.1096

Holme O, de Lange T, Stallemo A, Wiig H, Hasund A, Dvergsnes K, Garborg K, Ystrom CM, Loberg M, Hoff G, Bretthauer M, Kalager M (2016)
Routine vs. on-demand analgesia in colonoscopy: a randomized clinical trial
Endoscopy, 48 (9), 823-828
DOI 10.1055/s-0042-108433

Holme O, Hoff G, Loberg M (2016)
Colorectal Cancer Screening
JAMA-J. Am. Med. Assoc., 316 (16), 1714
DOI 10.1001/jama.2016.13846

Holme O, Loberg 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

Jover R, Bretthauer M, Dekker E, Holme O, Kaminski MF, Loberg M, Zauber AG, Hernan MA, Lansdorp-Vogelaar I, Sunde A, McFadden E, Castells A, Regula J, Quintero E, Pellise 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), 571-578
DOI 10.1055/s-0042-104116

Loberg M, Kalager M, Bretthauer M (2016)
Commentary: "Randomize, Then Consent" or "Consent, Then Randomize"?: Revitalizing the Issue of Preconsent Randomization
Epidemiology, 27 (3), 393-394
DOI 10.1097/EDE.0000000000000469

Moritz V, Bretthauer M, Holme O, Fagerland MW, Loberg M, Glomsaker T, de Lange T, Seip B, Sandvei P, Hoff G (2016)
Time trends in quality indicators of colonoscopy
United European Gastroenterol. J., 4 (1), 110-120
DOI 10.1177/2050640615570147

Zahl PH, Holme O, Loberg M (2016)
Norwegian mammography screening- many inconsistencies in evaluation
Tidsskr. Nor. Laegeforen., 136 (19), 1616-1618
DOI 10.4045/tidsskr.16.0165

Publications 2015

Berstad P, Loberg M, Larsen IK, Kalager M, Holme O, Botteri E, Bretthauer M, Hoff G (2015)
Long-term lifestyle changes after colorectal cancer screening: randomised controlled trial
Gut, 64 (8), 1268-1276
DOI 10.1136/gutjnl-2014-307376

Holme O, Bretthauer M, Eide TJ, Loberg EM, Grzyb K, Loberg M, Kalager M, Adami HO, Kjellevold O, Hoff G (2015)
Long-term risk of colorectal cancer in individuals with serrated polyps
Gut, 64 (6), 929-936
DOI 10.1136/gutjnl-2014-307793

Loberg 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

Swanson SA, Holme O, Loberg M, Kalager M, Bretthauer M, Hoff G, Aas E, Hernan 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

Publications 2014

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

Holme O, Loberg M, Kalager M (2014)
Colorectal Cancer and the Effect of Flexible Sigmoidoscopy Screening Reply
JAMA-J. Am. Med. Assoc., 312 (22), 2411-2412
DOI 10.1001/jama.2014.14695

Holme O, Loberg M, Kalager M, Bretthauer M, Hernan 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-J. Am. Med. Assoc., 312 (6), 606-615
DOI 10.1001/jama.2014.8266

Loberg M, Kalager M, Holme O, 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

Publications 2013

Hassan C, Quintero E, Dumonceau JM, Regula J, Brandao C, Chaussade S, Dekker E, Dinis-Ribeiro M, Ferlitsch M, Gimeno-Garcia A, Hazewinkel Y, Jover R, Kalager M, Loberg M, Pox C, Rembacken B, Lieberman D (2013)
Post-polypectomy colonoscopy surveillance: European Society of Gastrointestinal Endoscopy (ESGE) Guideline
Endoscopy, 45 (10), 842-851
DOI 10.1055/s-0033-1344548

Kalager M, Loberg M, Bretthauer M (2013)
Limited use of nonprogram screening in Norway
Int. J. Cancer, 132 (7), 1723-1724
DOI 10.1002/ijc.27807

Kalager M, Loberg M, Fonnebo VM, Bretthauer M (2013)
Failure to account for selection-bias
Int. J. Cancer, 133 (11), 2751-2753
DOI 10.1002/ijc.28244

Publications 2012

Berstad P, Loberg M, Kalager M, Jorgensen A, Garborg K, Ruud HK, Bretthauer M, Hoff G (2012)
Risk Stratification for Advanced Colorectal Neoplasia
Cancer Prev. Res., 5 (12), 1405
DOI 10.1158/1940-6207.CAPR-12-0383

Publications 2011

Loberg M, Furholm S, Hoff I, Aabakken L, Hoff G, Bretthauer M (2011)
Nitrous oxide for analgesia in colonoscopy without sedation
Gastrointest. Endosc., 74 (6), 1347-1353
DOI 10.1016/j.gie.2011.07.071

Publications 2008

Johansen PH, Loberg M, Piene R (2008)
Monoid hypersurfaces
GEOMETRIC MODELING AND ALGEBRAIC GEOMETRY, 55-77
DOI 10.1007/978-3-540-72185-7_4