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A six-month crossover chemoprevention clinical trial of tea in smokers and non-smokers: methodological issues in a feasibility study
BACKGROUND: Chemoprevention crossover trials of tea can be more efficient than parallel designs but the attrition and compliance rates with such trials are unknown. METHODS: Attrition (dropouts) and compliance with treatment were assessed in a 25-week randomized, placebo controlled, crossover, feasi...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
BioMed Central
2012
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3414766/ https://www.ncbi.nlm.nih.gov/pubmed/22800470 http://dx.doi.org/10.1186/1472-6882-12-96 |