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Comparative Effectiveness Research (CER)
Comparative effectiveness research (CER): An evaluation approach to show the relative strengths and weaknesses of two (or more) programs on the same outcome. This approach generally compares a target program with another program, instead of a true control condition [i.e., treatment as usual (TAU) or no treatment]. The review process evaluates the effectiveness of a target program, by comparing a group that receives the program with a group that receives TAU or no treatment. Currently, CER studies are not eligible for review for because the comparison group is considered to receive more than TAU.