title: Measures of change.
authors.forename: Ann F
authors.initials: AF
authors.lastname: VanSant
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D004185:Disability Evaluation; D006305:Health Status Indicators; D006801:Humans; D007223:Infant; D026761:Physical Therapy Specialty / Q000295:instrumentation* / Q000379:methods*