Question: Why might it not make much sense to examine the results for heterogeneity of effects? Bisson and Andrew (2007) conducted a meta-analysis of cognitive behavior

Why might it not make much sense to examine the results for heterogeneity of effects? Bisson and Andrew (2007) conducted a meta-analysis of cognitive behavior therapy (CBT) as a treatment for posttraumatic stress disorder (PTSD). They found 14 studies for which they had clinician€™s ratings of PTSD symptoms in both a CBT-focused condition and a wait list usual care condition. The results follow:

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