Publications 2025

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

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 (in press)
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

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

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

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

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