Attrition and bias in the MRC cognitive function and ageing study: an epidemiological investigation

• Κύριοι συγγραφείς: Matthews Fiona E (Συγγραφέας), Chatfield Mark (Συγγραφέας), Freeman Carol (Συγγραφέας), McCracken Cherie (Συγγραφέας), Brayne Carol (Συγγραφέας), CFAS MRC (Συγγραφέας)
• Μορφή: Βιβλίο
• Έκδοση: BMC, 2004-04-01T00:00:00Z.
• Θέματα: article
• Διαθέσιμο Online: Connect to this object online.

<p>Abstract</p> <p>Background</p> <p>Any hypothesis in longitudinal studies may be affected by attrition and poor response rates. The MRC Cognitive Function and Ageing study (MRC CFAS) is a population based longitudinal study in five centres with identical methodology i...