academic article

• Recommendations on evidence needed to support measurement equivalence between electronic and paper-based patient-reported outcome (PRO) measures: ISPOR ePRO Good Research Practices Task Force report..  Value in health : the journal of the International Society for Pharmacoeconomics and Outcomes Research.  12:419-29. 2008
• Recommended methods for determining responsiveness and minimally important differences for patient-reported outcomes..  Journal of clinical epidemiology.  61:102-9. 2007
• Responsiveness and minimal important differences for patient reported outcomes..  Health and quality of life outcomes.  -. 2006
• Clinical significance of patient-reported questionnaire data: another step toward consensus..  Journal of clinical epidemiology.  58:1217-9. 2005