Shortening the Haemophilia Activities List (HAL) from 42 items to 18 items.
Isolde A R KuijlaarsJanjaap van der NetTyler W BucknerChristine L KemptonRoger E G SchutgensKathelijn FischerPublished in: Haemophilia : the official journal of the World Federation of Hemophilia (2021)
This clinimetric study resulted in a >50% shortening of the HAL. The 18-item HALshort reduces patient burden and is expected to capture the information on activities and participation. The HALshort needs further validation.