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

• 主要な著者: Matthews Fiona E (著者), Chatfield Mark (著者), Freeman Carol (著者), McCracken Cherie (著者), Brayne Carol (著者), CFAS MRC (著者)
• フォーマット: 図書
• 出版事項: BMC, 2004-04-01T00:00:00Z.
• 主題: article
• オンライン･アクセス: 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...