Glucosamine for pain in osteoarthritis: why do trial results differ?
Glucosamine for pain in osteoarthritis: why do trial results differ?
复制标题
氨基葡萄糖治疗骨关节炎疼痛:为什么试验结果不同?
DOI:
10.1002/art.22728
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发表时间:
2007
影响因子:
--
通讯作者:
Felson,DavidT
中科院分区:
文献类型:
--
作者:
Vlad,StevenC;LaValley,MichaelP;McAlindon,TimothyE;Felson,DavidT
ObjectiveInvestigators in trials of glucosamine report a range of estimates for efficacy, making conclusions difficult. We undertook this study to identify factors that explain heterogeneity in trials of glucosamine.MethodsWe searched for reports of trial results in Ovid Medline, the Cochrane Central Register of Controlled Trials, the Cochrane Database of Systematic Reviews, and proceedings of scientific conferences. We selected reports of randomized, double‐blind, placebo‐controlled trials of glucosamine for pain from osteoarthritis of the knee or hip. We extracted data regarding features of design, subjects, and markers of industry involvement, including industry funding, whether a drug was supplied by industry, industry participation, and industry‐affiliated authorship. We examined which factors best accounted for differences in the effect sizes of studies grouped by these characteristics, and we examined changes in I2, a measure of heterogeneity.ResultsFifteen trials met our inclusion criteria. The summary effect size was 0.35 (95% confidence interval 0.14, 0.56). I2was 0.80. Except for allocation concealment, no feature of study design explained this substantial heterogeneity. Summary effect sizes ranged from 0.05 to 0.16 in trials without industry involvement, but the range was 0.47–0.55 in trials with industry involvement. The effect size was 0.06 for trials using glucosamine hydrochloride and 0.44 for trials using glucosamine sulfate. Trials using Rottapharm products had an effect size of 0.55, compared with 0.11 for the rest.ConclusionHeterogeneity among trials of glucosamine is larger than would be expected by chance. Glucosamine hydrochloride is not effective. Among trials with industry involvement, effect sizes were consistently higher. Potential explanations include different glucosamine preparations, inadequate allocation concealment, and industry bias.
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DOI:
--
发表时间:
2010
期刊:
The journal of knee surgery
影响因子:
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作者:
MD Stephen Owens;BS Phillip Wagner;Jr MD C. Thomas Vangsness;M. Wagner
通讯作者:
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DOI:
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2003
期刊:
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发表时间:
2000
期刊:
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通讯作者:
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DOI:
--
发表时间:
1994
期刊:
Arzneimittel-Forschung
影响因子:
--
作者:
A. Reichelt;Forster Kk;Michael A Fischer;L. Rovati;I. Setnikar
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I. Setnikar
影响因子:
3.2
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