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Dr. R. J. Wirth will be presenting on the use of longitudinal item response theory models for scale development in small samples. The presentation, entitled “PRO development with small samples: An innovative use of repeated measures IRT”, will be presented on October 22nd during session 107 (starting at 4:05 PM Pacific) at the ISOQOL 22nd Annual Conference in Vancouver.
Dr. R. J. Wirth will be part of a workshop at this year’s ISOQOL meeting in Vancouver entitled “Clinical Outcomes Assessment (COA) in Rare Disease (RD) – New Perspective on Traditional Methods”. For more information visit: http://www.isoqol.org/2015conference/workshops
Dr. R. J. Wirth, VPG Managing Partner, has joined the North Carolina Technology Association as a member of the Board of Advisors. The NCTA Board of Advisors serve as a sounding board to help grow NCTA’s membership and profile as the primary voice for North Carolina’s tech sector.
Web of Science reports that as of Nov/Dec 2014, the Wirth and Edwards (2007) paper entitled “Item factor analysis: Current approaches and future directions” is a “highly cited paper” and is “in the top 1% of the academic field of Psychiatry/Psychology” for the publication year 2007. Download a copy here