Development and Analysis of Item Response Theory-based Short-form Depression Severity Scales Based on the HDRS and MADRS
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This study was supported by Pfizer Inc., Ann Arbor, Michigan and in part by the National Institutes of Health Patient-Reported Outcomes Measurement Information System contract (1U01AR052177), Bethesda, Maryland.
PII: S1877-1319(10)00004-2
doi:10.1016/j.ehrm.2009.11.001
© 2010 Elsevier Inc. All rights reserved.
