Reliability of the quality of upper extremity skills test for children with cerebral palsy aged 2 to 12 years

Megan Thorley, Natasha Lannin, Anne Cusick, Iona Novak, Roslyn Boyd

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59 Citations (Scopus)


Aim: To investigate reliability of the Quality of Upper Extremity Skills Test (QUEST) scores for children with cerebral palsy (CP) aged 212 years. Method: Thirty-one QUESTs from 24 children with CP were rated once by two raters and twice by one rater. Internal consistency of total scores, inter- and intra-rater reliability findings for total, domain, and item scores were calculated. Results: Total scores inter-rater reliability, Intra-class Correlation Coefficient (ICC) was 0.86, and for intra-rater reliability, ICC was 0.96. Domains had high reliability (ICC > 0.80) within raters and between raters except for grasp (moderate at ICC = 0.67). Item inter-rater reliability was moderate or better for 80% of items; item intra-rater reliability was moderate or better for 87% of items. Total score internal consistency was high (α = 0.97). Implications: The QUEST has proven reliability for children with CP aged 18 months to 8 years. This study demonstrates strong reliability for children aged 212 years.

Original languageEnglish
Pages (from-to)4-21
Number of pages18
JournalPhysical & Occupational Therapy in Pediatrics
Issue number1
Publication statusPublished - Feb 2012
Externally publishedYes


  • Cerebral palsy
  • Motor development
  • Psychometric testing

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