File:Non-equivalent-control-group-design.png
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Non-equivalent-control-group-design.png (496 × 87 pixels, file size: 2 KB, MIME type: image/png)
Non-equivalent control group design
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:57, 6 October 2008 | 496 × 87 (2 KB) | Daniel K. Schneider (talk | contribs) | Non-equivalent control group design |
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