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May 21, 2003

Economic Issues in the Residency Match

Author Affiliations

Letters Section Editor: Stephen J. Lurie, MD, PhD, Senior Editor.

JAMA. 2003;289(19):2502-2503. doi:10.1001/jama.289.19.2502-a

In Reply: We agree that meta-analyses must always be interpreted with caution, as they are challenged by the "mixed salad principle," that is, by the heterogeneity of evidence reported.1 However, a number of methods exist that allow researchers to integrate heterogeneous evidence to examine the consistency and applicability of findings across studies of various types.2 Ideally, systematic reviews would include all relevant studies, regardless of language of publication. Limited time and resources may preclude such an approach.