Publications 2025

Hansen SH, Maseng MG, Grännö O, Vestergaard MV, Bang C, Olsen BC, Lund C, Olbjørn C, Løvlund EE, Vikskjold FB, Huppertz-Hauss G, Perminow G, Yassin H, Valeur J, Aass Holten KI, Henriksen M, Bengtson MB, Ricanek P, Opheim R, Boyar R, Torp R, Frigstad SO, Aabrekk TB, Detlie TE, Kristensen VA et al. (2025)
Fecal Microbiome Reflects Disease State and Prognosis in Inflammatory Bowel Disease in an Adult Population-Based Inception Cohort
Inflamm Bowel Dis (in press)
DOI 10.1093/ibd/izaf060, PubMed 40285477

Holten KA, Bernklev T, Opheim R, Olsen BC, Detlie TE, Strande V, Ricanek P, Boyar R, Bengtson MB, Aabrekk TB, Asak Ø, Frigstad SO, Kristensen VA, Hagen M, Henriksen M, Huppertz-Hauss G, Høivik ML, Jelsness-Jørgensen LP (2025)
Fatigue in Patients with Inflammatory Bowel Disease in Remission One Year After Diagnosis (the IBSEN III Study)
J Crohns Colitis, 19 (4)
DOI 10.1093/ecco-jcc/jjae170, PubMed 39527064

Maurud S, Lunde L, Moen A, Opheim R (2025)
Mapping conditional health literacy and digital health literacy in patients with inflammatory bowel disease to optimise availability of digital health information: a cross-sectional study
Scand J Gastroenterol, 60 (6), 536-547
DOI 10.1080/00365521.2025.2497952, PubMed 40314186

Olsen BC, Opheim R, Kristensen VA, Høivik ML, Lund C, Aabrekk TB, Johansen I, Aass Holten KI, Strande V, Glad IF, Bengtson MB, Ricanek P, Detlie TE, Medhus AW, Boyar R, Torp R, Vatn S, Frigstad SO, Valeur J, Bernklev T, Jelsness-Jørgensen LP, Huppertz-Hauss G (2025)
Prevalence of Irritable Bowel Syndrome Based on Rome IV Criteria in Patients in Biochemical and Endoscopic Remission From Newly Diagnosed Inflammatory Bowel Disease: One- and Three-Year Results (the IBSEN III Cohort)
Inflamm Bowel Dis (in press)
DOI 10.1093/ibd/izaf047, PubMed 40063582

Pertsinidou E, Salomon B, Bergemalm D, Salihovic S, Hedin CRH, Ling Lundström M, Keita ÅV, Magnusson MK, Eriksson C, Bengtson MB, Grännö O, Aabrekk TB, Movérare R, Rydell N, Ekoff H, Rönnelid J, , D'Amato M, Detlie TE, Huppertz-Hauss G, Opheim R, Ricanek P, Kristensen VA, Öhman L, Söderholm JD et al. (2025)
Anti-integrin αvβ6 IgG antibody as a diagnostic and prognostic marker in ulcerative colitis: A cross-sectional and longitudinal study defining a specific disease phenotype
J Crohns Colitis, 19 (5)
DOI 10.1093/ecco-jcc/jjaf062, PubMed 40251889

Strande V, Hagen M, Lund C, Asak Ø, Bengtson MB, Boyar R, Detlie TE, Frigstad SO, Henriksen M, Holten KIA, Hovde Ø, Huppertz-Hauss G, Høie O, Johansen I, Medhus AW, Olsen BC, Opheim R, Perminow G, Ricanek P, Torp R, Valeur J, Vatn S, Aabrekk TB, Moum B, Høivik ML et al. (2025)
Predicting severe inflammatory bowel disease: a risk matrix model based on the IBSEN III inception cohort
Scand J Gastroenterol, 60 (7), 716-727
DOI 10.1080/00365521.2025.2512591, PubMed 40483585

Zerouga I, Valeur J, Sommer C, Carlsen MH, Hagen M, Høivik ML, Kristensen VA, Opheim R, Hopstock LA, Strande V, Lund C, Boyar R, Asak Ø, Bengtson MB, Aabrekk TB, Hovde Ø, Huppertz-Hauss G, Detlie TE, Ricanek P, Frigstad SO, Stubhaug A, Aas AM (2025)
Habitual intake of macronutrients and fermentable oligo-, di-, monosaccharides and polyols is not associated with irritable bowel syndrome-like symptoms in inflammatory bowel disease
Clin Nutr ESPEN, 67, 105-113
DOI 10.1016/j.clnesp.2025.03.005, PubMed 40064237

Publications 2024

Lund C, Strande V, Hagen M, Bengtson MB, Boyar R, Detlie TE, Frigstad SO, Medhus AW, Henriksen M, Holten KIA, Hovde Ø, Huppertz-Hauss G, Johansen I, Olsen BC, Opheim R, Pallenschat J, Perminow G, Ricanek P, Torp R, Ystrøm CM, Høie O, Asak Ø, Vatn S, Aabrekk TB, Kristensen VA et al. (2024)
Low Surgery Rates in Early Crohn's Disease: Results from a Prospective Population-Based Inception Cohort-The Inflammatory Bowel Disease in South-Eastern Norway III Study
Inflamm Bowel Dis (in press)
DOI 10.1093/ibd/izae297, PubMed 39699202

Maurud S, Lunde L, Moen A, Opheim R (2024)
Exploring the foundations of a digital health information service for patients with inflammatory bowel disease: a mixed method study in Gravitate-Health
BMC Gastroenterol, 24 (1), 184
DOI 10.1186/s12876-024-03272-1, PubMed 38789953

Salihovic S, Nyström N, Mathisen CB, Kruse R, Olbjørn C, Andersen S, Noble AJ, Dorn-Rasmussen M, Bazov I, Perminow G, Opheim R, Detlie TE, Huppertz-Hauss G, Hedin CRH, Carlson M, Öhman L, Magnusson MK, Keita ÅV, Söderholm JD, D'Amato M, Orešič M, Wewer V, Satsangi J, Lindqvist CM, Burisch J et al. (2024)
Identification and validation of a blood- based diagnostic lipidomic signature of pediatric inflammatory bowel disease
Nat Commun, 15 (1), 4567
DOI 10.1038/s41467-024-48763-7, PubMed 38830848

Strande V, Lund C, Hagen M, Bengtson MB, Cetinkaya RB, Detlie TE, Frigstad SO, Høie O, Medhus AW, Henriksen M, Aass Holten KI, Hovde Ø, Huppertz-Hauss G, Johansen I, Olsen BC, Opheim R, Ricanek P, Torp R, Tønnessen T, Vatn S, Aabrekk TB, Høivik ML, Kristensen VA (2024)
Clinical course of ulcerative colitis: Frequent use of biologics and low colectomy rate first year after diagnosis-results from the IBSEN III inception cohort
Aliment Pharmacol Ther, 60 (3), 357-368
DOI 10.1111/apt.18097, PubMed 38837289

Ulleriks I, Opheim R, Børøsund E, Henni SH (2024)
Pasienters erfaringer med utveksling av informasjon ved regionalanestesi i forbindelse med kirurgi – en kvalitativ studie
Inspira, 19 (2), 56-70
DOI 10.23865/inspira.v19.6399, PublikaID 511

Zerouga I, Valeur J, Sommer C, Cvancarova Småstuen M, Medhus AW, Lund C, Johansen I, Cetinkaya RB, Bengtson MB, Torp R, Hovde Ø, Huppertz-Hauss G, Detlie TE, Aabrekk TB, Ricanek P, Frigstad SO, Hopstock LA, Opheim R, Kristensen VA, Høivik ML, Hauger Carlsen M, Aas AM (2024)
Dietary intake and nutritional status in patients with newly diagnosed inflammatory bowel disease: insights from the IBSEN III study
Scand J Gastroenterol, 59 (6), 652-660
DOI 10.1080/00365521.2024.2313056, PubMed 38356408

Publications 2023

Holten KIA, Bernklev T, Opheim R, Johansen I, Olsen BC, Lund C, Strande V, Medhus AW, Perminow G, Bengtson MB, Cetinkaya RB, Vatn S, Frigstad SO, Aabrekk TB, Detlie TE, Hovde Ø, Kristensen VA, Småstuen MC, Henriksen M, Huppertz-Hauss G, Høivik ML, Jelsness-Jørgensen LP (2023)
Fatigue in Patients with Newly Diagnosed Inflammatory Bowel Disease: Results from a Prospective Inception Cohort, the IBSEN III Study
J Crohns Colitis, 17 (11), 1781-1790
DOI 10.1093/ecco-jcc/jjad094, PubMed 37279652

Johansen I, Småstuen MC, Løkkeberg ST, Kristensen VA, Høivik ML, Lund C, Olsen B, Strande V, Huppertz-Hauss G, Aabrekk TB, Bengtson MB, Ricanek P, Detlie TE, Frigstad SO, Jelsness-Jørgensen LP, Opheim R (2023)
Symptoms and symptom clusters in patients newly diagnosed with inflammatory bowel disease: results from the IBSEN III Study
BMC Gastroenterol, 23 (1), 255
DOI 10.1186/s12876-023-02889-y, PubMed 37501083

Lindemann K, Heimisdottir Danbolt S, Ramberg L, Eyjólfsdóttir B, Wang YY, Heli-Haugestøl AG, Walcott SL, Mjåland O, Navestad GA, Hermanrud S, Juul-Hansen KE, Bragstad LK, Opheim R, Kleppe A, Kongsgaard U (2023)
Patient-reported nausea after implementation of an enhanced recovery after surgery protocol for gynae-oncology patients
Int J Gynecol Cancer, 33 (8), 1287-1294
DOI 10.1136/ijgc-2023-004356, PubMed 37451689

Olsen BC, Opheim R, Kristensen VA, Høivik ML, Lund C, Aabrekk TB, Johansen I, Holten K, Strande V, Bengtson MB, Ricanek P, Detlie TE, Bernklev T, Jelsness-Jørgensen LP, Huppertz-Hauss G (2023)
Health-related quality of life in patients with newly diagnosed inflammatory bowel disease: an observational prospective cohort study (IBSEN III)
Qual Life Res, 32 (10), 2951-2964
DOI 10.1007/s11136-023-03435-9, PubMed 37219727

Svendsen EJ, Opheim R, Hermansen BE, Hardeland C (2023)
Ad hoc digital communication and assessment during clinical placements in nursing education; a qualitative research study of students', clinical instructors', and teachers' experiences
PLoS One, 18 (7), e0287438
DOI 10.1371/journal.pone.0287438, PubMed 37478099

Publications 2022

Opheim R, Moum KM, Småstuen MC, Moum B (2022)
The impact of restrictions on psychological outcomes in patients with inflammatory bowel disease on biological treatment during the coronavirus pandemic in Norway
Qual Life Res, 32 (3), 691-699
DOI 10.1007/s11136-022-03254-4, PubMed 36125603

Publications 2021

Kristensen VA, Opheim R, Perminow G, Huppertz-Hauss G, Detlie TE, Lund C, Andersen S, Olsen BC, Johansen I, Medhus AW, Vatn S, Brackmann S, Olbjørn C, Rove J, Henriksen M, Løvlund EE, Bengtson MB, Aabrekk TB, Tønnessen T, Vikskjold FB, Yassin H, Frigstad SO, Hasund A, Høie O, Schmidt K et al. (2021)
Inflammatory bowel disease in South-Eastern Norway III (IBSEN III): a new population-based inception cohort study from South-Eastern Norway
Scand J Gastroenterol, 56 (8), 899-905
DOI 10.1080/00365521.2021.1922746, PubMed 34154494

Moum KM, Moum B, Opheim R (2021)
Patients with inflammatory bowel disease on immunosuppressive drugs: perspectives' on COVID-19 and health care service during the pandemic
Scand J Gastroenterol, 56 (5), 545-551
DOI 10.1080/00365521.2021.1901308, PubMed 33771086

Publications 2020

Normann CO, Opheim R, Andreassen BK, Bernklev T, Haug ES (2020)
Health-related quality-of-life after radical cystectomy among Norwegian men and women compared to the general population
Scand J Urol, 54 (3), 181-187
DOI 10.1080/21681805.2020.1754906, PubMed 32343159

Opheim R, Moum B, Grimstad BT, Jahnsen J, Prytz Berset I, Hovde Ø, Huppertz-Hauss G, Bernklev T, Jelsness-Jørgensen LP (2020)
Self-esteem in patients with inflammatory bowel disease
Qual Life Res, 29 (7), 1839-1846
DOI 10.1007/s11136-020-02467-9, PubMed 32144613

Sundar TKB, Riiser K, Småstuen MC, Opheim R, Løndal K, Glavin K, Helseth S (2020)
Health-related quality of life among 13-14 year old adolescents with overweight-a mixed methods approach
Health Qual Life Outcomes, 18 (1), 161
DOI 10.1186/s12955-020-01413-0, PubMed 32471437

Publications 2019

Torres J, Ellul P, Langhorst J, Mikocka-Walus A, Barreiro-de Acosta M, Basnayake C, Ding NJS, Gilardi D, Katsanos K, Moser G, Opheim R, Palmela C, Pellino G, Van der Marel S, Vavricka SR (2019)
European Crohn's and Colitis Organisation Topical Review on Complementary Medicine and Psychotherapy in Inflammatory Bowel Disease
J Crohns Colitis, 13 (6), 673-685e
DOI 10.1093/ecco-jcc/jjz051, PubMed 30820529

Publications 2017

Lerdal A, Opheim R, Gay CL, Moum B, Fagermoen MS, Kottorp A (2017)
Psychometric limitations of the 13-item Sense of Coherence Scale assessed by Rasch analysis
BMC Psychol, 5 (1), 18
DOI 10.1186/s40359-017-0187-y, PubMed 28595651

Publications 2016

Huppertz-Hauss G, Høivik ML, Jelsness-Jørgensen LP, Opheim R, Henriksen M, Høie O, Hovde Ø, Kempski-Monstad I, Solberg IC, Jahnsen J, Hoff G, Moum B, Bernklev T (2016)
Fatigue in a population-based cohort of patients with inflammatory bowel disease 20 years after diagnosis: The IBSEN study
Scand J Gastroenterol, 52 (3), 351-358
DOI 10.1080/00365521.2016.1256425, PubMed 27852169

Jelsness-Jørgensen LP, Frigstad SO, Moum B, Grimstad T, Opheim R, Jahnsen J, Bernklev T (2016)
Pain may be an important factor to consider in inflammatory bowel disease patients troubled by fatigue
United European Gastroenterol J, 5 (5), 687-693
DOI 10.1177/2050640616674654, PubMed 28815032

Jelsness-Jørgensen LP, Moum B, Grimstad T, Jahnsen J, Opheim R, Prytz Berset I, Hovde Ø, Torp R, Frigstad SO, Huppertz-Hauss G, Bernklev T (2016)
Validity, Reliability, and Responsiveness of the Brief Pain Inventory in Inflammatory Bowel Disease
Can J Gastroenterol Hepatol, 2016, 5624261
DOI 10.1155/2016/5624261, PubMed 27446848

Opheim R, Lie Høivik M, Bernklev T, Jelsness-Jørgensen LP, Moum B (2016)
The Use of Complementary and Alternative Medicine among Patients with Inflammatory Bowel Disease Is Associated with Reduced Health-Related Quality of Life
Gastroenterol Res Pract, 2016, 6453657
DOI 10.1155/2016/6453657, PubMed 28003821

Publications 2014

Opheim R, Fagermoen MS, Jelsness-Jørgensen LP, Bernklev T, Moum B (2014)
Sense of coherence in patients with inflammatory bowel disease
Gastroenterol Res Pract, 2014, 989038
DOI 10.1155/2014/989038, PubMed 24527028

Publications 2013

Opheim R, Fagermoen MS, Bernklev T, Jelsness-Jorgensen LP, Moum B (2013)
Fatigue interference with daily living among patients with inflammatory bowel disease
Qual Life Res, 23 (2), 707-17
DOI 10.1007/s11136-013-0508-4, PubMed 23975381

Publications 2012

Opheim R, Bernklev T, Fagermoen MS, Cvancarova M, Moum B (2012)
Use of complementary and alternative medicine in patients with inflammatory bowel disease: results of a cross-sectional study in Norway
Scand J Gastroenterol, 47 (12), 1436-47
DOI 10.3109/00365521.2012.725092, PubMed 23003678

Publications 2011

Opheim R, Hoivik ML, Solberg IC, Moum B, IBSEN Study Group (2011)
Complementary and alternative medicine in patients with inflammatory bowel disease: the results of a population-based inception cohort study (IBSEN)
J Crohns Colitis, 6 (3), 345-53
DOI 10.1016/j.crohns.2011.09.007, PubMed 22405172