Item Response Model Adaptation for Analyzing Data from Different Versions of Parkinson's Disease Rating Scales.
Gopichand GottipatiAlienor C BergesShuying YangChao ChenMats O KarlssonElodie L PlanPublished in: Pharmaceutical research (2019)
An IRM able to handle two variants of clinical PD endpoints was developed; it can improve the utilization of data from diverse sources and diverse disease populations.