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Health Services Research (HSR) Methods
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One-group Posttest-Only Design
Synonyms: One-Shot Case Study.

A type of experimental study in which only one group receives a treatment and is then measured in a post test -- after treatment. In this design, there is no control group or baseline condition to compare with.

Further Reading
Gliner, J.A. and G.A. Morgan. 2000. Research Methods in Applied Settings, Mahwah, NJ: Lawrence Erlbaum Associates.