%0 Journal Article %J Medical Care %D 2007 %T The Patient-Reported Outcomes Measurement Information System (PROMIS): progress of an NIH Roadmap cooperative group during its first two years %A Cella, D. %A Yount, S. %A Rothrock, N. %A Gershon, R. C. %A Cook, K. F. %A Reeve, B. %A Ader, D. %A Fries, J.F. %A Bruce, B. %A Rose, M. %X The National Institutes of Health (NIH) Patient-Reported Outcomes Measurement Information System (PROMIS) Roadmap initiative (www.nihpromis.org) is a 5-year cooperative group program of research designed to develop, validate, and standardize item banks to measure patient-reported outcomes (PROs) relevant across common medical conditions. In this article, we will summarize the organization and scientific activity of the PROMIS network during its first 2 years. %B Medical Care %V 45 %P S3-S11 %G eng