Difference in method of administration did not significantly impact item response: an IRT-based analysis from the Patient-Reported Outcomes Measurement Information System (PROMIS) initiative

Author: Bjorner Jakob   Rose Matthias   Gandek Barbara   Stone Arthur   Junghaenel Doerte   Ware John  

Publisher: Springer Publishing Company

ISSN: 0962-9343

Source: Quality of Life Research, Vol.23, Iss.1, 2014-02, pp. : 217-227

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