Participation rates in the selection of population controls in a case-control study of colorectal cancer using two recruitment methods Tasas de participación en la selección de controles poblacionales en un estudio de casos y controles de cáncer colorrectal usando dos métodos de reclutamiento

• Main Authors: Gemma Castaño-Vinyals (Author), Mark J. Nieuwenhuijsen (Author), Víctor Moreno (Author), Estela Carrasco (Author), Elisabet Guinó (Author), Manolis Kogevinas (Author), Cristina M. Villanueva (Author)
• Format: Book
• Published: Elsevier, 2011-10-01T00:00:00Z.
• Subjects: article
• Online Access: Connect to this object online.

Objectives: Low participation rates in the selection of population controls are an increasing concern for the validity of case-control studies worldwide. Methods: We conducted a pilot study to assess two approaches to recruiting population controls in a study of colorectal cancer, including a face-t...