Selection bias: neighbourhood controls and controls selected from those presenting to a Health Unit in a case control study of efficacy of BCG revaccination

BACKGROUND: In most case control studies the hardest decision is the choice of the control group, as in the ideal control group the proportion exposed is the same as in the population that produced the cases. METHODS: A comparison of two control groups in a case control study of the efficacy of BCG...

Descripción completa

Detalles Bibliográficos
Autores principales: Dantas, Odimariles MS, Ximenes, Ricardo AA, de Albuquerque, Maria de Fatima PM, Montarroyos, Ulisses R, de Souza, Wayner V, Varejão, Patrícia, Rodrigues, Laura C
Formato: Texto
Lenguaje:English
Publicado: BioMed Central 2007
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1810541/
https://www.ncbi.nlm.nih.gov/pubmed/17319942
http://dx.doi.org/10.1186/1471-2288-7-11

Internet

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1810541/
https://www.ncbi.nlm.nih.gov/pubmed/17319942
http://dx.doi.org/10.1186/1471-2288-7-11

Ejemplares similares