Study Design, Precision, and Validity in Observational Studies
نویسندگان
چکیده
منابع مشابه
Study Design and Confounder Control in Observational Studies: Two Cases
1. Introduction In New Zealand students complete high school education at ages 17 to 18 and most of those who proceed to university do so at ages 18 to 19. The final year at high school is called Year 13. In 2006 the New Zealand Qualifications Authority introduced a subject at Year 13 called Statistics and Modelling which replaced the earlier Mathematics with Statistics (New Zealand Qualificati...
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Much can be learned about a process by observing changes over time or by comparing two different processes under different conditions. This chapter introduces the major types of observational study designs: the longitudinal or cohort study, the comparative or case-control study, and some of their variants. It also includes examples of the key measures of relationship between factor and outcome ...
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ژورنال
عنوان ژورنال: Journal of Palliative Medicine
سال: 2009
ISSN: 1096-6218,1557-7740
DOI: 10.1089/jpm.2008.9690