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. 2011 Aug 8;4:51. doi: 10.1186/1865-1380-4-51

Table 2.

Description of groups

Group Number/Group Primary method of assessment Comparison with traditional methods
One 87 Survey/self-reported results None
Two 18 Before/after measurement None
Three 79 Objective assessment
(pretest/posttest, checklist, etc.)
Yes