Alzheimers Dement (Amst)
May 2016
Introduction: The Uniform Data Set (UDS) contains neuropsychological test scores and demographic information for participants at Alzheimer's disease centers across the United States funded by the National Institute on Aging. Mean regression analysis of neuropsychological tests has been proposed to detect cognitive decline, but the approach requires stringent assumptions.
Methods: We propose using quantile regression to directly model conditional percentiles of neuropsychological test scores.