What question did this study set out to answer?

To examine whether flaws in trial design—specifically allocation sequence generation, allocation concealment, and double blinding—bias treatment effect estimates and explain discrepancies between small and large randomized trials in meta-analyses.

December 4, 2001Annals of Internal Medicine

Reported Methodologic Quality and Discrepancies between Large and Small Randomized Trials in Meta-Analyses

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Authors

LKLise Lotte Kjaergard JVJohn Villumsen CGChristian Gluud

Discussion

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Overview

Methodological analysis reveals trial quality flaws exaggerate intervention benefits across clinical meta-analyses, highlighting drivers of discrepancy between trial sizes.

Key Points

To examine whether flaws in trial design—specifically allocation sequence generation, allocation concealment, and double blinding—bias treatment effect estimates and explain discrepancies between small and large randomized trials in meta-analyses.
Assessed reported methodological quality parameters, including allocation sequence generation, allocation concealment, and double-blinding procedures.
Analyzed the relationship between trial methodological quality indicators and effect size discrepancies between large and small randomized trials within meta-analyses.
Inadequate generation of allocation sequences and poor allocation concealment lead to exaggerated estimates of intervention benefit.
Lack of double blinding significantly overstates intervention efficacy, directly contributing to discordant conclusions between small and large randomized trials in meta-analyses.

Cite This Study

Kjaergard et al. (2001) studied this question.

synapsesocial.com/papers/69df8a5dde200760a8615325 https://doi.org/10.7326/0003-4819-135-11-200112040-00010

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December 4, 2001Annals of Internal Medicine

Reported Methodologic Quality and Discrepancies between Large and Small Randomized Trials in Meta-Analyses

View Full Paper

Ask AI

Bookmark

Authors

LKLise Lotte Kjaergard JVJohn Villumsen CGChristian Gluud

Discussion

Member takes

Overview

Methodological analysis reveals trial quality flaws exaggerate intervention benefits across clinical meta-analyses, highlighting drivers of discrepancy between trial sizes.

Key Points

To examine whether flaws in trial design—specifically allocation sequence generation, allocation concealment, and double blinding—bias treatment effect estimates and explain discrepancies between small and large randomized trials in meta-analyses.
Assessed reported methodological quality parameters, including allocation sequence generation, allocation concealment, and double-blinding procedures.
Analyzed the relationship between trial methodological quality indicators and effect size discrepancies between large and small randomized trials within meta-analyses.
Inadequate generation of allocation sequences and poor allocation concealment lead to exaggerated estimates of intervention benefit.
Lack of double blinding significantly overstates intervention efficacy, directly contributing to discordant conclusions between small and large randomized trials in meta-analyses.

Cite This Study

Kjaergard et al. (2001) studied this question.

synapsesocial.com/papers/69df8a5dde200760a8615325 https://doi.org/10.7326/0003-4819-135-11-200112040-00010

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