Research Mulls Approach to Qualify Patient-reported Measures
New research published in the 10/25 online PLOS One journal and supported by CDRH’s Division of Biostatistics outlines an approach that could lead to more patient-reported outcome measures (PROM) being included in drug and device labeling. The researchers say the “PROM has to be valid, reliable and able to detect a change if the targeted disease status changes. One approach to assess the quality of a PROM is to investigate the association between the PROM and an objective clinical endpoint measuring the status of a disease/condition. However, methods assessing the association between continuous and discrete variables are limited, especially for correlated measurements.”
The online paper proposes a method to assess such an association with any type of samples with or without correlation. “The method involves estimating the probability revealing the status of a subject’s disease/condition (called truth thereafter) through the subject’s reported outcomes,” the researchers write. “The probability is a conditional probability revealing truth given the relative location of the subject’s objective outcome compared to the subject-specific latent threshold in the objective endpoint. A consistent estimator for the probability is derived. The operating characteristics of the consistent estimator are illustrated using simulation.”
To view the online article, click here.