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

Thorley, Megan, Lannin, Natasha, Cusick, Anne, Novak, Iona and Boyd, Roslyn (2012) Reliability of the quality of upper extremity skills test for children with cerebral palsy aged 2 to 12 years. Physical and Occupational Therapy in Pediatrics, 32 1: 4-21. doi:10.3109/01942638.2011.602389

Author Thorley, Megan
Lannin, Natasha
Cusick, Anne
Novak, Iona
Boyd, Roslyn
Title Reliability of the quality of upper extremity skills test for children with cerebral palsy aged 2 to 12 years
Journal name Physical and Occupational Therapy in Pediatrics   Check publisher's open access policy
ISSN 0194-2638
Publication date 2012-01-01
Sub-type Article (original research)
DOI 10.3109/01942638.2011.602389
Open Access Status Not Open Access
Volume 32
Issue 1
Start page 4
End page 21
Total pages 18
Place of publication New York, NY, United States
Publisher Informa Healthcare
Language eng
Abstract Background Persistent impairments resulting from childhood acquired brain injury (ABI) can impact performance of activities of daily living (ADL). Objective and reliable measures of ADL skills are required for treatment planning and research. Aim To evaluate test-retest reproducibility of the Assessment of Motor and Process Skills (AMPS) for children with ABI. Methods Twenty-eight children with ABI (mean age 11 years 7 months, SD 2 years 4 months; males = 11) were recruited. Two AMPS tasks were performed over two consecutive days, as per standardized AMPS procedures. Intraclass correlation coefficients (ICC; 2,1), standard error of measurement (SEM), smallest detectable difference (SDD), and 95% limits of agreement (Bland-Altman) were calculated. Results Test-retest reliability was fair to good for AMPS ADL motor (ICC 0.55) and ADL process (ICC 0.58) measures. The SEM was 0.36 and 0.34 logits for AMPS ADL motor and ADL process measures respectively. The SDD was 1.0 (motor) and 0.93 logits (process) measures. A learning effect was evident. Conclusion Test-retest reproducibility of the AMPS was fair to good for children with ABI, which is poorer than previously published data. Administration of the AMPS in an unfamiliar environment, fatigue, and the small time interval between testing sessions may have contributed to poorer results. The AMPS remains a useful measure of ADL, contributing to our understanding of task execution processes.
Formatted abstract
Aim: To investigate reliability of the Quality of Upper Extremity Skills Test (QUEST) scores for children with cerebral palsy (CP) aged 2–12 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 betterfor 87% of items. Total score internal consistency was high (α = 0.97).
The QUEST has proven reliability for children with CP aged 18 months to 8 years. This study demonstrates strong reliability for children aged 2–12 years.
Keyword Cerebral palsy
Motor Development
Psychometric testing
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Received 16 December 2010; revised 9 June 2011; accepted 21 June 2011)

Document type: Journal Article
Sub-type: Article (original research)
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