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Meta-analysis of dropout rates in randomized controlled clinical trials

Opioid analgesia for osteoarthritis pain

verfasst von: M. Gehling, B. Hermann, M. Tryba

Erschienen in: Der Schmerz | Ausgabe 3/2011

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Abstract

Background

The interpretation of opioid studies in patients with chronic pain due to osteoarthritis is limited by a high dropout rate. Therefore, the implication of dropouts on the recommendation of opioids in chronic osteoarthritis pain was analyzed.

Data sources

The databases of Medline, Embase, the Cochrane Library, and the Internet from 1990–2009 were searched.

Study selection

Two independent authors included randomized controlled clinical trials investigating the effects of chronic opioid treatment for the management of osteoarthritis pain. In order to calculate the odds ratio, only placebo-controlled trials were included.

Data extraction

The primary outcome parameter was the dropout rate. Secondarily, the effect size was calculated. Data extraction was conducted by two independent authors.

Results

A total of 19 studies reporting results of 3,871 treatment and 2,080 placebo outcomes were retrieved. Compared to placebo, opioid treatment was associated with a significantly increased total dropout rate (OR=1.3, 95%CI 1.2–1.4). Discontinuation of treatment was related to adverse events (OR=4.0, 95%CI 3.4–4.6). Lack of analgesia was associated with a significantly reduced dropout rate in opioid groups (OR=0.4, 95%CI 0.3–0.5). Analgesic effects were significantly better in opioid-treated patients (p=0.01).

Conclusion

In spite of analgesic effects, many osteoarthritis patients prefer to stop chronic opioid use, because of adverse events. Therefore, opioids are not generally recommended in osteoarthritis.

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Titel: Meta-analysis of dropout rates in randomized controlled clinical trials
Opioid analgesia for osteoarthritis pain
verfasst von: M. Gehling
B. Hermann
M. Tryba
Publikationsdatum: 01.06.2011
Verlag: Springer-Verlag
Erschienen in: Der Schmerz / Ausgabe 3/2011
Print ISSN: 0932-433X
Elektronische ISSN: 1432-2129
DOI: https://doi.org/10.1007/s00482-011-1057-9

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Meta-analysis of dropout rates in randomized controlled clinical trials

Opioid analgesia for osteoarthritis pain

Abstract

Background

Data sources

Study selection

Data extraction

Results

Conclusion

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Background

Data sources

Study selection

Data extraction

Results

Conclusion

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