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Inge Christoffer Olsen

Statistician

Oslo University Hospital, CTU

This is my personal collection of work, information and stuff I have done, have stumbled upon or just want to keep. I like sharing, and support the idea of transparency, so I might as well share it with others.

Interests

  • Clinical trials design
  • Statistical methods
  • Cluster randomised trials
  • Dose-finding trials

Education

  • PhD in Statistics, 2006

    Norwegian University of Science and Technology

  • Siv.Ing. in Statistics, 2001

    Norwegian University of Science and Technology

Recent Posts

How to make nice publishable adverse event tables using tidyverse

This blog post is just an answer to a colleague to provide R code for the generation of Adverse Event tables. And it is also nice to …
Last updated on Feb 12, 2020 11 min read R

Using purrr to make nice publishable tables

Disclaimer: This is not an introduction to using purrr. For this purpose I recommend to read chapter 21 and 25 in Hadley Wickhams R for …
Last updated on Dec 29, 2019 6 min read R

Random allocation list generator

Introduction I have made a random allocation list generator using R Shiny. It is located at …
Last updated on Dec 5, 2019 5 min read R

Featured Publications

S. Bernitz, R. Dalbye, J. Zhang, T.M. Eggebø, K.F. Frøslie, I.C. Olsen, E. Blix, P. Øian (2019). The frequency of intrapartum caesarean section use with the WHO partograph versus Zhang's guideline in the Labour Progression Study (LaPS): a multicentre, cluster-randomised controlled trial. The Lancet.

DOI

K.K. Jørgensen, I.C. Olsen, G.L. Goll, M. Lorentzen, N. Bolstad, E.A. Haavardsholm, K.E.A. Lundin, C. Mørk, J. Jahnsen, T.K. Kvien, I.P. Berset, B.T. Fevang, J. Florholmen, S. Kalstad, N.J. Mørk, K. Ryggen, K.S. Tveit, S.K. Sæther, B. Gulbrandsen, J. Hagfors, K. Waksvik, D. Warren, K.J. Henanger, Ø. Asak, S. Baigh, I.M. Blomgren, T.J. Bruun, K. Dvergsnes, S.O. Frigstad, C.G. Gjesdal, B.H.J. Grandaunet, I.M. Hansen, I.S.H. Hatten, G. Huppertz-Hauss, M. Henriksen, S.S. Hoie, J. Krogh, J.R. Kruse, M.-K.A. Ljoså, I.P. Midtgard, P. Mielnik, B. Moum, G. Noraberg, A. Poyan, U. Prestegård, H.U. Rashid, J.H. Rydning, L. Sagatun, K.A. Seeberg, K. Skjetne, E.K. Strand, H. Stray, N. Stray, R. Torp, C. Vold, C.M. Ystrøm, C.C. Zettel (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. The Lancet.

DOI

E.A. Haavardsholm, A.-B. Aga, I.C. Olsen, S. Lillegraven, H.B. Hammer, T. Uhlig, H. Fremstad, T.M. Madland, ÅS. Lexberg, H. Haukeland, E. Rødevand, C. Høili, H. Stray, A. Noraas, I.J. Hansen, G. Bakland, L.B. Nordberg, D. van der Heijde, T.K. Kvien (2016). Ultrasound in management of rheumatoid arthritis: ARCTIC randomised controlled strategy trial. BMJ (Clinical research ed.).

DOI

Recent Publications

Assessments of the unmet need in the management of patients with rheumatoid arthritis: Analyses from the NOR-DMARD registry

© The Author(s) 2018. Published by Oxford University Press on behalf of the British Society for Rheumatology. Objective To describe …
DOI

Guideline recommended treatment to targets of cardiovascular risk is inadequate in patients with inflammatory joint diseases

© 2018 Elsevier B.V. Objectives: Patients with inflammatory joint diseases (IJD) have an increased risk of cardiovascular disease …
DOI

Long-term efficacy and safety of biosimilar infliximab (CT-P13) after switching from originator infliximab: open-label extension of the NOR-SWITCH trial

© 2019 The Authors. Journal of Internal Medicine published by John Wiley & Sons Ltd on behalf of Association for Publication of …
DOI

The frequency of intrapartum caesarean section use with the WHO partograph versus Zhang's guideline in the Labour Progression Study (LaPS): a multicentre, cluster-randomised controlled trial

© 2019 Elsevier Ltd Background: There is an ongoing debate concerning which guidelines and monitoring tools are most beneficial for …
S. Bernitz, R. Dalbye, J. Zhang, T.M. Eggebø, K.F. Frøslie, I.C. Olsen, E. Blix, P. Øian
DOI

Clinical and ultrasound remission after 6 months of treat-to-target therapy in early rheumatoid arthritis: Associations to future good radiographic and physical outcomes

© Author(s) (or their employer(s)) 2018. No commercial re-use. See rights and permissions. Published by BMJ. Objective: To explore …
DOI
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