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Slide Presentation of the 2007 Annual Meeting of AHRQ

Strong Quasi-Experimental Designs

Text Description is below the image.

Description of the "Non-equivalent Control Group Design"
- Treatment Group - Time = O₁ X O₂
- Comparison Group - Time = O₁ O₂
Description of the "Time Series Design"
- Treatment Group - Time = O₁ O₂ O₃ X O₄ O₅ O₆
- Comparison Series possible - Time = O₁ O₂ O₃ O₄ O₅ O₆