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Single time point comparisons in longitudinal randomized controlled trials: power and bias in the presence of missing data
BACKGROUND: The primary analysis in a longitudinal randomized controlled trial is sometimes a comparison of arms at a single time point. While a two-sample t-test is often used, missing data are common in longitudinal studies and decreases power by reducing sample size. Mixed models for repeated mea...
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| Vydáno v: | BMC Med Res Methodol |
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| Hlavní autoři: | , |
| Médium: | Artigo |
| Jazyk: | Inglês |
| Vydáno: |
BioMed Central
2016
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| Témata: | |
| On-line přístup: | https://ncbi.nlm.nih.gov/pmc/articles/PMC4828848/ https://ncbi.nlm.nih.gov/pubmed/27068578 https://ncbi.nlm.nih.govhttp://dx.doi.org/10.1186/s12874-016-0144-0 |
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