Extensive variability in platelet, bleeding, and QOL outcome measures in adult and pediatric ITP: Communication from the ISTH SSC subcommittee on platelet immunology.

Despite prior attempts to standardize ITP outcome evaluation, wide variability in platelet, bleeding, and HRQoL outcomes remain. Most ITP studies did not systematically evaluate bleeding or HRQoL outcomes. Further standardization of outcome measurement in both pediatric and adult ITP is greatly needed.