P-035 - ITEM RESPONSE THEORY MODELING FRAMEWORK FOR EVALUATING MIGRAINE-SPECIFIC QUESTIONNAIRE (MSQ) IN MIGRAINE DRUG DEVELOPMENT.
P. Chen1, A. Pritchard-Bell1, M. Karlsson2, S. Ueckert2, C. Davis3, M. Nagase1, C. Hsu1, S. Dutta1, M. Ahamadi1; 1Amgen Inc., Thousand Oaks, CA, USA, 2Uppsala University, Uppsala, Sweden, 3Amgen Inc., San Francisco, CA, USA.