The PROMIS Physical Function item bank was calibrated to a standardized metric and shown to improve measurement efficiency

Matthias Rose(Humboldt-Universität zu Berlin), John E. Ware(Unknown), Jakob Bue Bjørner(National Research Centre for the Working Environment), James F. Fries(Arthritis and Rheumatism Associates), Bonnie Bruce(San Jose State University), Barbara Gandek
Journal of Clinical Epidemiology
April 1, 2014
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