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Subgroup analysis of large trials can guide further research: a case study of vitamin E and pneumonia
BACKGROUND: Biology is complex and the effects of many interventions may vary between population groups. Subgroup analysis can give estimates for specific populations, but trials are usually too small for such analyses. PURPOSE: To test whether the effect of vitamin E on pneumonia risk is uniform ov...
| Autores principales: | , |
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
Dove Medical Press
2011
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| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3046185/ https://www.ncbi.nlm.nih.gov/pubmed/21386974 http://dx.doi.org/10.2147/CLEP.S16114 |