Stefan had two posters and  presented at a Short Course Afternoon Session on Sunday.

Four-hours Short Course:

“Applying Mixed Methods to Establish Content Validity of PRO, ClinRO, and ObsRO Assessments.”   
Burke LB, Patrick DL, Hobart JC, Cano SJ. International Society for Pharmacoeconomics and Outcomes Research, Amsterdam, Netherlands.

Poster Presentations:

THE PAIN ASSESSMENT FOR LOWER BACK SYMPTOMS (PAL-S): REFINEMENT OF A NEW PRO INSTRUMENT THROUGH A MIXED METHODS APPROACH.  McCarrier KP, Bushnell DM, Ramasamy A, Liedgens H, Blum SI, Cano S, Martin ML, Patrick DL. International Society for Pharmacoeconomics and Outcomes Research, Amsterdam, Netherlands (November, 2014).

IMPACTS OF LOWER BACK PAIN: REFINEMENT OF THE PAIN ASSESSMENT FOR LOWER BACK-IMPACTS QUESTIONNAIRE (PAL-I) USING A MIXED METHODS APPROACH. Bushnell DM, McCarrier KP, Ramasamy A, Liedgens H, Blum SI, Cano S, Martin ML, Patrick DL. . International Society for Pharmacoeconomics and Outcomes Research, Amsterdam, Netherlands (November, 2014).