Validity, responsiveness, minimal detectable change, and minimal clinically important change of the Pediatric Motor Activity Log in children with cerebral palsy

► We examined the criterion-related validity and psychometric properties of the PMAL. ► The PMAL-QOM had fair concurrent and predictive validity. ► The PMAL-AOU and PMAL-QOM were responsive to change from pretreatment to posttreatment. ► The MDCs were 0.67 points on the PMAL-AOU and 0.66 points on the PMAL-QOM, respectively. ► The MCID ranged between 0.16 and 0.94 on the PMAL-AOU and 0.15 and 0.74 on the PMAL-QOM.