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Evidence-Based Or Biased? The Quality Of Published Reviews Of Evidence-Based Practices, Julia H. Littell
Evidence-Based Or Biased? The Quality Of Published Reviews Of Evidence-Based Practices, Julia H. Littell
Graduate School of Social Work and Social Research Faculty Research and Scholarship
Objective
To assess methods used to identify, analyze, and synthesize results of empirical research on intervention effects, and determine whether published reviews are vulnerable to various sources and types of bias.
Methods
Study 1 examined the methods, sources, and conclusions of 37 published reviews of research on effects of a model program. Study 2 compared findings of one published trial with summaries of results of that trial that appeared in published reviews.
Results
Study 1: Published reviews varied in terms of the transparency of inclusion criteria, strategies for locating relevant published and unpublished data, standards used to evaluate evidence, and …