| Literature DB >> 15353896 |
Abstract
For the purpose of comparative therapeutic research, an overview of some basic terms and definitions is given. The main emphasis lies on the time structure of the research and the possible sources of bias and validity. In addition, methods to deal with confounding, effect modification and possible causal inferences are summarized. Copyright 2004 S. Karger GmbH, FreiburgMesh：
Year: 2004 PMID： 15353896 DOI： 10.1159/000080569
Source DB: PubMed Journal: Forsch Komplementarmed Klass Naturheilkd ISSN： 1424-7364