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
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...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2011-10-01
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| Series: | Gaceta Sanitaria |
| Subjects: | |
| Online Access: | http://scielo.isciii.es/scielo.php?script=sci_arttext&pid=S0213-91112011000500002 |