Test-Retest and Inter- and Intrareliability of the Quality of the Upper-Extremity Skills Test in Preschool-Age Children With Cerebral Palsy

Haga N, van der Heijden-Maessen HC, van Hoorn JF, Boonstra AM, Hadders-Algra M. Test-retest and inter- and intrareliability of the Quality of the Upper-Extremity Skills Test in preschool-age children with cerebral palsy.ObjectiveTo investigate the test-retest, inter-, and intraobserver reliability of the Quality of Upper Extremity Skills Test (QUEST) in young children with cerebral palsy (CP).DesignFor test-retest reliability, a test-retest design was used; for the intra- and interobserver reliability, the videotaped test was scored on 2 occasions by 1 observer and by various observers.SettingGroups of preschool-age children in 2 general rehabilitation centers.ParticipantsTwenty-one children with CP (12 boys, 9 girls) aged 2 to 4.5 years (mean, 39mo).InterventionsNot applicable.Main Outcome MeasureSpearman correlation coefficient.ResultsThe data indicated that test-retest reliability was strong (ρ range, .85–.94). Intraobserver agreement (ρ range, .63–.95) and agreement between various observers (ρ range, .72–.90) were moderate to strong.ConclusionsTest-retest and inter- and intraobserver reliability of the QUEST in preschool-age children with CP is good.