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meta-analysis

Member Training: Heterogeneity in Meta-analysis

by TAF Support

Meta-analysis allows us to synthesize the results of separate studies. The goal is to assess the mean effect size and also heterogeneity – how much the effect size varies across studies.  [Read more…] about Member Training: Heterogeneity in Meta-analysis

Tagged With: effect size, heterogeneity, meta-analysis, prediction interval

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Member Training: Meta-analysis

by guest contributer Leave a Comment

Meta-analysis is the quantitative pooling of data from multiple studies. Meta-analysis done well has many strengths, including statistical power, precision in effect size estimates, and providing a summary of individual studies.

But not all meta-analyses are done well. The three threats to the validity of a meta-analytic finding are heterogeneity of study results, publication bias, and poor individual study quality.

[Read more…] about Member Training: Meta-analysis

Tagged With: effect size, fixed effect, meta-analysis, PRISMA guidelines, random effect

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Member Training: A Data Analyst’s Guide to Methods and Tools for Reproducible Research

by guest contributer 3 Comments

Have you ever experienced befuddlement when you dust off a data analysis that you ran six months ago? 

Ever gritted your teeth when your collaborator invalidates all your hard work by telling you that the data set you were working on had “a few minor changes”?

Or panicked when someone running a big meta-analysis asks you to share your data?

If any of these experiences rings true to you, then you need to adopt the philosophy of reproducible research.

[Read more…] about Member Training: A Data Analyst’s Guide to Methods and Tools for Reproducible Research

Tagged With: computation, Data Analysis, meta-analysis, methodology, reproducible research, results

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