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Notes on the use of historical controls.
The principles and methods of incorporating historical controls in four cases (C1, stable control; C2, rare occurrence of responses; C3, small group size; C4, historical control as a reference) are discussed. Two points are emphasized: one is that the historical control should be regarded as a given...
| Autores principales: | , |
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
1994
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1566875/ https://www.ncbi.nlm.nih.gov/pubmed/8187708 |