Inge Christoffer Olsen
Position: Researcher CTU (Statistician), PhD
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Publications 2017

Jørgensen KK, Olsen IC, Goll GL, Lorentzen M, Bolstad N, Haavardsholm EA, Lundin KEA, Mørk C, Jahnsen J, Kvien TK, NOR-SWITCH study group (2017)
Switching from originator infliximab to biosimilar CT-P13 compared with maintained treatment with originator infliximab (NOR-SWITCH): a 52-week, randomised, double-blind, non-inferiority trial
Lancet, 389 (10086), 2304-2316
PubMed 28502609

Lie E, Lindström U, Zverkova-Sandström T, Olsen IC, Forsblad-d'Elia H, Askling J, Kapetanovic MC, Kristensen LE, Jacobsson LTH (2017)
Tumour necrosis factor inhibitor treatment and occurrence of anterior uveitis in ankylosing spondylitis: results from the Swedish biologics register
Ann Rheum Dis, 76 (9), 1515-1521
PubMed 28254789

Wibetoe G, Ikdahl E, Rollefstad S, Olsen IC, Bergsmark K, Kvien TK, Salberg A, Soldal DM, Bakland G, Lexberg Å, Fevang BT, Gulseth HC, Haugeberg G, Semb AG (2017)
Cardiovascular disease risk profiles in inflammatory joint disease entities
Arthritis Res Ther, 19 (1), 153
PubMed 28673314

Publications 2016

Haavardsholm EA, Aga AB, Olsen IC, Lillegraven S, Hammer HB, Uhlig T, Fremstad H, Madland TM, Lexberg ÅS, Haukeland H, Rødevand E, Høili C, Stray H, Noraas A, Hansen IJ, Bakland G, Nordberg LB, van der Heijde D, Kvien TK (2016)
Ultrasound in management of rheumatoid arthritis: ARCTIC randomised controlled strategy trial
BMJ, 354, i4205
PubMed 27530741

Ikdahl E, Rollefstad S, Hisdal J, Olsen IC, Pedersen TR, Kvien TK, Semb AG (2016)
Sustained Improvement of Arterial Stiffness and Blood Pressure after Long-Term Rosuvastatin Treatment in Patients with Inflammatory Joint Diseases: Results from the RORA-AS Study
PLoS One, 11 (4), e0153440
PubMed 27093159

Ikdahl E, Rollefstad S, Wibetoe G, Olsen IC, Berg IJ, Hisdal J, Uhlig T, Haugeberg G, Kvien TK, Provan SA, Semb AG (2016)
Predictive Value of Arterial Stiffness and Subclinical Carotid Atherosclerosis for Cardiovascular Disease in Patients with Rheumatoid Arthritis
J Rheumatol, 43 (9), 1622-30
PubMed 27307523

Midtbø H, Gerdts E, Kvien TK, Olsen IC, Lønnebakken MT, Davidsen ES, Rollefstad S, Semb AG (2016)
The association of hypertension with asymptomatic cardiovascular organ damage in rheumatoid arthritis
Blood Press, 25 (5), 298-304
PubMed 27123584

Nordberg LB, Lillegraven S, Lie E, Aga AB, Olsen IC, Hammer HB, Uhlig T, Jonsson MK, van der Heijde D, Kvien TK, Haavardsholm EA, and the ARCTIC working group (2016)
Patients with seronegative RA have more inflammatory activity compared with patients with seropositive RA in an inception cohort of DMARD-naïve patients classified according to the 2010 ACR/EULAR criteria
Ann Rheum Dis, 76 (2), 341-345
PubMed 27094444

Provan SA, Olsen IC, Austad C, Haugeberg G, Kvien TK, Uhlig T (2016)
Calcium supplementation and inflammation increase mortality in rheumatoid arthritis: A 15-year cohort study in 609 patients from the Oslo Rheumatoid Arthritis Register
Semin Arthritis Rheum, 46 (4), 411-417
PubMed 27522465

Uhlig T, Bjørneboe O, Krøll F, Palm Ø, Olsen IC, Grotle M (2016)
Involvement of the multidisciplinary team and outcomes in inpatient rehabilitation among patients with inflammatory rheumatic disease
BMC Musculoskelet Disord, 17, 18
PubMed 26762160

Uhlig T, Lie E, Norvang V, Lexberg ÅS, Rødevand E, Krøll F, Kalstad S, Olsen IC, Kvien TK (2016)
Achievement of Remission and Low Disease Activity Definitions in Patients with Rheumatoid Arthritis in Clinical Practice: Results from the NOR-DMARD Study
J Rheumatol, 43 (4), 716-23
PubMed 26879358

Publications 2015

Aga AB, Hammer HB, Olsen IC, Uhlig T, Kvien TK, van der Heijde D, Fremstad H, Madland TM, Lexberg ÅS, Haukeland H, Rødevand E, Høili C, Stray H, Bendvold AN, Soldal DM, Bakland G, Lie E, Haavardsholm EA (2015)
First step in the development of an ultrasound joint inflammation score for rheumatoid arthritis using a data-driven approach
Ann Rheum Dis, 75 (8), 1444-51
PubMed 26085490

Berg IJ, Semb AG, van der Heijde D, Kvien TK, Olsen IC, Dagfinrud H, Provan SA (2015)
CRP and ASDAS are associated with future elevated arterial stiffness, a risk marker of cardiovascular disease, in patients with ankylosing spondylitis: results after 5-year follow-up
Ann Rheum Dis, 74 (8), 1562-6
PubMed 25795906

Berg IJ, van der Heijde D, Dagfinrud H, Seljeflot I, Olsen IC, Kvien TK, Semb AG, Provan SA (2015)
Disease activity in ankylosing spondylitis and associations to markers of vascular pathology and traditional cardiovascular disease risk factors: a cross-sectional study
J Rheumatol, 42 (4), 645-53
PubMed 25641897

Ikdahl E, Hisdal J, Rollefstad S, Olsen IC, Kvien TK, Pedersen TR, Semb AG (2015)
Rosuvastatin improves endothelial function in patients with inflammatory joint diseases, longitudinal associations with atherosclerosis and arteriosclerosis: results from the RORA-AS statin intervention study
Arthritis Res Ther, 17, 279
PubMed 26445924

Ikdahl E, Rollefstad S, Olsen IC, Kvien TK, Hansen IJ, Soldal DM, Haugeberg G, Semb AG (2015)
EULAR task force recommendations on annual cardiovascular risk assessment for patients with rheumatoid arthritis: an audit of the success of implementation in a rheumatology outpatient clinic
Biomed Res Int, 2015, 515280
PubMed 25815322

Moe RH, Grotle M, Kjeken I, Olsen IC, Mowinckel P, Haavardsholm EA, Hagen KB, Kvien TK, Uhlig T (2015)
Effectiveness of an Integrated Multidisciplinary Osteoarthritis Outpatient Program versus Outpatient Clinic as Usual: A Randomized Controlled Trial
J Rheumatol, 43 (2), 411-8
PubMed 26669917

Tønnessen E, Svendsen IS, Olsen IC, Guttormsen A, Haugen T (2015)
Performance development in adolescent track and field athletes according to age, sex and sport discipline
PLoS One, 10 (6), e0129014
PubMed 26043192

Publications 2014

Berg IJ, Semb AG, van der Heijde D, Kvien TK, Hisdal J, Olsen IC, Dagfinrud H, Provan SA (2014)
Uveitis is associated with hypertension and atherosclerosis in patients with ankylosing spondylitis: a cross-sectional study
Semin Arthritis Rheum, 44 (3), 309-13
PubMed 24968705

Midtbø H, Gerdts E, Kvien TK, Olsen IC, Hirth A, Davidsen ES, Semb AG (2014)
Disease activity and left ventricular structure in patients with rheumatoid arthritis
Rheumatology (Oxford), 54 (3), 511-9
PubMed 25224414

Sveaas SH, Berg IJ, Provan SA, Semb AG, Hagen KB, Vøllestad N, Fongen C, Olsen IC, Michelsen A, Ueland T, Aukrust P, Kvien TK, Dagfinrud H (2014)
Efficacy of high intensity exercise on disease activity and cardiovascular risk in active axial spondyloarthritis: a randomized controlled pilot study
PLoS One, 9 (9), e108688
PubMed 25268365

Publications 2013

Aga AB, Lie E, Uhlig T, Olsen IC, Wierød A, Kalstad S, Rødevand E, Mikkelsen K, Kvien TK, Haavardsholm EA (2013)
Time trends in disease activity, response and remission rates in rheumatoid arthritis during the past decade: results from the NOR-DMARD study 2000-2010
Ann Rheum Dis, 74 (2), 381-8
PubMed 24285493

Gandjbakhch F, Haavardsholm EA, Conaghan PG, Ejbjerg B, Foltz V, Brown AK, Døhn UM, Lassere M, Freeston JE, Olsen IC, Bøyesen P, Bird P, Fautrel B, Hetland ML, Emery P, Bourgeois P, Hørslev-Petersen K, Kvien TK, McQueen FM, Østergaard M (2013)
Determining a magnetic resonance imaging inflammatory activity acceptable state without subsequent radiographic progression in rheumatoid arthritis: results from a followup MRI study of 254 patients in clinical remission or low disease activity
J Rheumatol, 41 (2), 398-406
PubMed 24334647

Maehlen MT, Olsen IC, Andreassen BK, Viken MK, Jiang X, Alfredsson L, Källberg H, Brynedal B, Kurreeman F, Daha N, Toes R, Zhernakova A, Gutierrez-Achury J, de Bakker PI, Martin J, Teruel M, Gonzalez-Gay MA, Rodríguez-Rodríguez L, Balsa A, Uhlig T, Kvien TK, Lie BA (2013)
Genetic risk scores and number of autoantibodies in patients with rheumatoid arthritis
Ann Rheum Dis, 74 (4), 762-8
PubMed 24336335

Maehlen MT, Provan SA, de Rooy DP, van der Helm-van Mil AH, Krabben A, Saxne T, Lindqvist E, Semb AG, Uhlig T, van der Heijde D, Mero IL, Olsen IC, Kvien TK, Lie BA (2013)
Associations between APOE genotypes and disease susceptibility, joint damage and lipid levels in patients with rheumatoid arthritis
PLoS One, 8 (4), e60970
PubMed 23613766

Semb AG, Rollefstad S, Provan SA, Kvien TK, Stranden E, Olsen IC, Hisdal J (2013)
Carotid plaque characteristics and disease activity in rheumatoid arthritis
J Rheumatol, 40 (4), 359-68
PubMed 23322468

Publications 2012

Torkildsen O, Wergeland S, Bakke S, Beiske AG, Bjerve KS, Hovdal H, Midgard R, Lilleås F, Pedersen T, Bjørnarå B, Dalene F, Kleveland G, Schepel J, Olsen IC, Myhr KM (2012)
ω-3 fatty acid treatment in multiple sclerosis (OFAMS Study): a randomized, double-blind, placebo-controlled trial
Arch Neurol, 69 (8), 1044-51
PubMed 22507886

Tvete IF, Olsen IC, Fagerland MW, Meland N, Aldrin M, Smerud KT, Holden L (2012)
An approach to combining parallel and cross-over trials with and without run-in periods using individual patient data
Clin Trials, 9 (2), 164-75
PubMed 22297620

Publications 2009

Kjekshus JK, Torp-Pedersen C, Gullestad L, Køber L, Edvardsen T, Olsen IC, Sjaastad I, Qvigstad E, Skomedal T, Osnes JB, Levy FO (2009)
Effect of piboserod, a 5-HT4 serotonin receptor antagonist, on left ventricular function in patients with symptomatic heart failure
Eur J Heart Fail, 11 (8), 771-8
PubMed 19567409

Sommer OH, Aga O, Cvancarova M, Olsen IC, Selbaek G, Engedal K (2009)
Effect of oxcarbazepine in the treatment of agitation and aggression in severe dementia
Dement Geriatr Cogn Disord, 27 (2), 155-63
PubMed 19182483

Sorensen PS, Mellgren SI, Svenningsson A, Elovaara I, Frederiksen JL, Beiske AG, Myhr KM, Søgaard LV, Olsen IC, Sandberg-Wollheim M (2009)
NORdic trial of oral Methylprednisolone as add-on therapy to Interferon beta-1a for treatment of relapsing-remitting Multiple Sclerosis (NORMIMS study): a randomised, placebo-controlled trial
Lancet Neurol, 8 (6), 519-29
PubMed 19409854