The aim of this substudy was to determine the agreement between 2 approaches for measuring health care resource utilization (eg, number of hospital visits, number of primary care physician visits) in trial participants with Parkinson's disease (PD).
Optimal frequency for measuring health care resource utilization in Parkinson's disease using participant recall: the FS-TOO resource utilization substudy.
Department of Clinical Pharmacy and Outcomes Sciences, Medical University of South Carolina, and the Ralph H. Johnson VA Medical Center, Charleston, South Carolina 29425, USA. mauldinp@musc.edu