SAGE Research Methods - Encyclopedia of Epidemiology

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Quasi Experiments

By: Margaret H. Clark & William R. Shadish
In: Encyclopedia of Epidemiology
Edited by: Sarah Boslaugh

Quasi experiments, like all experiments, manipulate treatments to discover causal effects (quasi experiments are sometimes referred to as nonrandomized experiments or observational studies). However, these experiments differ from randomized experiments in that units are not ...

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  Clark, M., & Shadish, W. (2008). Quasi experiments. In S. Boslaugh (Ed.), Encyclopedia of epidemiology (pp. 877-879). SAGE Publications, Inc., https://dx.doi.org/10.4135/9781412953948.n384
  
  Clark, Margaret H., and William R. Shadish. "Quasi Experiments." In Encyclopedia of Epidemiology, edited by Boslaugh, Sarah, 877-79. Thousand Oaks, CA: SAGE Publications, Inc., 2008. https://dx.doi.org/10.4135/9781412953948.n384.
  
  Clark, M. and Shadish, W. 2008. Quasi Experiments. In: Sarah Boslaugh Editor, 2008. Encyclopedia of Epidemiology, Thousand Oaks, CA: SAGE Publications, Inc. pp. 877-879 Available at: <https://dx.doi.org/10.4135/9781412953948.n384> [Accessed 29 Jun 2022].
  
  Clark, Margaret H. and William R. Shadish. "Quasi Experiments." Encyclopedia of Epidemiology. Edited by Sarah Boslaugh. Thousand Oaks: SAGE Publications, Inc., 2008, pp. 877-79. SAGE Research Methods. 29 Jun 2022, doi: https://dx.doi.org/10.4135/9781412953948.n384.
  
  Clark, Margaret H., and William R. Shadish (2008). Quasi experiments In: Boslaugh, Sarah (Ed.),Quasi experiments Encyclopedia of epidemiology Thousand Oaks, CA: SAGE Publications, Inc.; 2008:877-879. doi:10.4135/9781412953948.n384
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