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 Design of Observational Studies (Springer Series in Statistics)An observational study is an empiric investigation of effects caused by treatments when randomized experimentation is unethical or infeasible. Observational studies are common in most fields that study the effects of treatments on people, including medicine, economics, epidemiology, education, psychology, political science and sociology. The... |  |  |  |  SAS 9.2 Language Reference: ConceptsDocuments essential concepts for the DATA step, SAS features, and SAS files.
SAS is a set of solutions for enterprise-wide business users and provides a powerful fourth-generation programming language for performing tasks such as these:
- data entry, retrieval, and management
- report writing
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