Population-based versus hospital-based controls: are they comparable? Controles poblaciones frente a controles hospitalarios: ¿son comparables?

• Main Authors: Alberto Ruano-Ravina (Author), Mónica Pérez-Ríos (Author), Juan Miguel Barros-Dios (Author)
• פורמט: ספר
• יצא לאור: Elsevier, 2008-12-01T00:00:00Z.
• נושאים: article
• גישה מקוונת: Connect to this object online.

Objective: To compare whether there are differences among hospital and population controls. Methods: Two case-control studies were conducted on lung cancer risk factors in the Santiago de Compostela Public Health District. Whereas one used randomly chosen census-based population controls, the other...