McGinley, J. S., With, R. J., Buse, D. C., Shulman, K., Lipton, R. L. (2017). Comparing Migraine Severity for AVP‐825 vs. Oral Sumatriptan Using Bifactor Analysis: Results of the COMPASS Study. Poster to be presented at 59th Annual Scientific Meeting for the American Headache Society (AHS). Boston, MA.
Conference
Simultaneously Evaluating Treatment Differences in Mean Level and Consistency in Migraine Pain Intensity Using Location Scale Mixed Effects Modeling: Results from the COMPASS Study
Lipton, R. L., McGinley, J. S., Wirth, R. J., Buse, D. C., and Shulman, K. (2017). Simultaneously Evaluating Treatment Differences in Mean Level and Consistency in Migraine Pain Intensity Using Location Scale Mixed Effects Modeling: Results from the COMPASS Study (Encore Presentation). Poster to be presented at 59th Annual Scientific Meeting for the American Headache Society (AHS). Boston, MA.
Using Growth Curves to Evaluate the Speed and Consistency of Acute Migraine Treatments: A Multilevel Modeling Perspective
McGinley, J. S. and Wirth, R. J. (2017). Using Growth Curves to Evaluate the Speed and Consistency of Acute Migraine Treatments: A Multilevel Modeling Perspective. Poster to be presented at 59th Annual Scientific Meeting for the American Headache Society (AHS). Boston, MA.
Modeling Longitudinal Change in Patient Reported Outcomes using Latent Curve Models
McGinley, J. S. and Wirth, R. J. (2017). Modeling Longitudinal Change in Patient Reported Outcomes using Latent Curve Models. Poster to be presented at the ISPOR 22nd Annual International Meeting. Boston, MA.
IRT in action: A demonstration of the equivalence of IRT-based scoring when using item subsets from a common item bank
VPG’s Drs. Houts & Wirth’s presentation “IRT in action: A demonstration of the equivalence of IRT-based scoring when using item subsets from a common item bank” has been accepted for presentation at ISPOR 22nd Annual International Meeting, Boston, MA.
DIA 2016 Validity and Fit for Purpose
Drs. Wirth and Edwards of VPG will be joined by Drs. Ashley Slagle (Aspen Consulting) and Johnathan Rubright (National Board of Medical Examiners) when they discuss the roll of modern validity theory in evaluating a COA’s “fit for purpose”. Join them at DIA 2016 for Session #247 entitled “Fit for Purpose and Modern Validity Theory in PROs”. Learn more here.