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Cost-effectiveness of infliximab versus conventional combination treatment in methotrexate-refractory early rheumatoid arthritis: 2-year results of the register-enriched randomised controlled SWEFOT trial.

Eriksson, Jonas ; Karlsson, Johan LU ; Bratt, Johan ; Petersson, Ingemar LU ; van Vollenhoven, Ronald ; Ernestam, Sofia ; Geborek, Pierre LU and Neovius, Martin (2015) In Annals of the Rheumatic Diseases 74(6). p.1094-1101
Abstract
OBJECTIVE:

To estimate the incremental cost-effectiveness of infliximab versus conventional combination treatment over 21 months in patients with methotrexate-refractory early rheumatoid arthritis.



METHODS:

In this multicentre, two-arm, parallel, randomised, active-controlled, open-label trial, rheumatoid arthritis patients with <1 year symptom duration were recruited from 15 rheumatology clinics in Sweden between October 2002 and December 2005. After 3-4 months of methotrexate monotherapy, patients not achieving low disease activity were randomised to addition of infliximab or sulfasalazine+hydroxychloroquine (conventional treatment group). Costs of drugs, healthcare use, and productivity losses... (More)
OBJECTIVE:

To estimate the incremental cost-effectiveness of infliximab versus conventional combination treatment over 21 months in patients with methotrexate-refractory early rheumatoid arthritis.



METHODS:

In this multicentre, two-arm, parallel, randomised, active-controlled, open-label trial, rheumatoid arthritis patients with <1 year symptom duration were recruited from 15 rheumatology clinics in Sweden between October 2002 and December 2005. After 3-4 months of methotrexate monotherapy, patients not achieving low disease activity were randomised to addition of infliximab or sulfasalazine+hydroxychloroquine (conventional treatment group). Costs of drugs, healthcare use, and productivity losses were retrieved from nationwide registers, while EuroQol 5-Dimensions utility was collected quarterly.



RESULTS:

Of 487 patients initially enrolled, 128 and 130 were randomised to infliximab and conventional treatment, respectively. The infliximab group accumulated higher drug and healthcare costs (€27 487 vs €10 364; adjusted mean difference €16 956 (95% CI 14 647 to 19 162)), while productivity losses did not differ (€33 804 vs €29 220; €3961 (95% CI -3986 to 11 850)), resulting in higher societal cost compared to the conventional group (€61 291 vs €39 584; €20 916 (95% CI 12 800 to 28 660)). Mean accumulated quality-adjusted life-years (QALYs) did not differ (1.10 vs 1.12; adjusted mean difference favouring infliximab treatment 0.01 (95% CI -0.07 to 0.08)). The incremental cost-effectiveness ratios for the infliximab versus conventional treatment strategy were €2 404 197/QALY from the societal perspective and €1 948 919/QALY from the healthcare perspective.



CONCLUSIONS:

In early, methotrexate-refractory rheumatoid arthritis, a treatment strategy commencing with addition of infliximab, as compared to sulfasalazine+hydroxychloroquine, was not cost-effective over 21 months at willingness to pay levels generally considered acceptable.



TRIAL REGISTRATION NUMBER:

NCT00764725. (Less)
Please use this url to cite or link to this publication:
author
; ; ; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Cost-effectiveness, QALY, randomised clinical trial, register, rheumatoid arthritis.
in
Annals of the Rheumatic Diseases
volume
74
issue
6
pages
1094 - 1101
publisher
BMJ Publishing Group
external identifiers
  • wos:000354371200022
  • scopus:84932616840
  • pmid:24737786
ISSN
1468-2060
DOI
10.1136/annrheumdis-2013-205060
language
English
LU publication?
yes
id
e9c4a2d2-b7cf-4aea-a486-a742408b711a (old id 4779049)
date added to LUP
2016-04-01 13:32:55
date last changed
2022-03-21 19:08:27
@article{e9c4a2d2-b7cf-4aea-a486-a742408b711a,
  abstract     = {{OBJECTIVE: <br/><br>
To estimate the incremental cost-effectiveness of infliximab versus conventional combination treatment over 21 months in patients with methotrexate-refractory early rheumatoid arthritis.<br/><br>
<br/><br>
METHODS: <br/><br>
In this multicentre, two-arm, parallel, randomised, active-controlled, open-label trial, rheumatoid arthritis patients with &lt;1 year symptom duration were recruited from 15 rheumatology clinics in Sweden between October 2002 and December 2005. After 3-4 months of methotrexate monotherapy, patients not achieving low disease activity were randomised to addition of infliximab or sulfasalazine+hydroxychloroquine (conventional treatment group). Costs of drugs, healthcare use, and productivity losses were retrieved from nationwide registers, while EuroQol 5-Dimensions utility was collected quarterly.<br/><br>
<br/><br>
RESULTS: <br/><br>
Of 487 patients initially enrolled, 128 and 130 were randomised to infliximab and conventional treatment, respectively. The infliximab group accumulated higher drug and healthcare costs (€27 487 vs €10 364; adjusted mean difference €16 956 (95% CI 14 647 to 19 162)), while productivity losses did not differ (€33 804 vs €29 220; €3961 (95% CI -3986 to 11 850)), resulting in higher societal cost compared to the conventional group (€61 291 vs €39 584; €20 916 (95% CI 12 800 to 28 660)). Mean accumulated quality-adjusted life-years (QALYs) did not differ (1.10 vs 1.12; adjusted mean difference favouring infliximab treatment 0.01 (95% CI -0.07 to 0.08)). The incremental cost-effectiveness ratios for the infliximab versus conventional treatment strategy were €2 404 197/QALY from the societal perspective and €1 948 919/QALY from the healthcare perspective.<br/><br>
<br/><br>
CONCLUSIONS: <br/><br>
In early, methotrexate-refractory rheumatoid arthritis, a treatment strategy commencing with addition of infliximab, as compared to sulfasalazine+hydroxychloroquine, was not cost-effective over 21 months at willingness to pay levels generally considered acceptable.<br/><br>
<br/><br>
TRIAL REGISTRATION NUMBER: <br/><br>
NCT00764725.}},
  author       = {{Eriksson, Jonas and Karlsson, Johan and Bratt, Johan and Petersson, Ingemar and van Vollenhoven, Ronald and Ernestam, Sofia and Geborek, Pierre and Neovius, Martin}},
  issn         = {{1468-2060}},
  keywords     = {{Cost-effectiveness; QALY; randomised clinical trial; register; rheumatoid arthritis.}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{1094--1101}},
  publisher    = {{BMJ Publishing Group}},
  series       = {{Annals of the Rheumatic Diseases}},
  title        = {{Cost-effectiveness of infliximab versus conventional combination treatment in methotrexate-refractory early rheumatoid arthritis: 2-year results of the register-enriched randomised controlled SWEFOT trial.}},
  url          = {{http://dx.doi.org/10.1136/annrheumdis-2013-205060}},
  doi          = {{10.1136/annrheumdis-2013-205060}},
  volume       = {{74}},
  year         = {{2015}},
}