Reliability and minimal detectable change of the Challenge, an advanced motor skills test for children with cerebral palsy, Danish version

Nordbye-Nielsen K; Maribo T; Wright FV; Rahbek O; Møller-Madsen B

Purpose

To translate and cross-culturally adapt the Challenge, and investigate the reliability and minimal detectable change (MDC) of the Danish Challenge in children with cerebral palsy (CP).

Materials and methods

A Danish version of the Challenge was created through a standardized translation process. Four physiotherapists evaluated face validity. Independently ambulatory children with CP were tested.

Live performance rating was conducted by assessors independently scoring the Challenge. Video-rating was undertaken for a subset of assessments. Same day assessment test–retest reliability was estimated. The Challenge’s Best Score Total was of primary interest.

Results

Forty-five children (5–18 years: mean 10 years 9 months; 19 girls) in Gross Motor Function Classification System levels I and II were tested. Inter-rater reliability was excellent for live assessments (n?=?45) ICC = 0.998 (95% CI 0.998–0.999) and video assessments (n?=?15) ICC = 0.991 (95% CI 0.963–0.997) and intra-rater reliability was excellent for live versus video-recorded assessments (n?=?10) ICC = 0.977 (95% CI 0.895–0.994).

Test–retest reliability (n?=?22) was excellent with ICC = 0.991 (95% CI 0.979–0.996) and minimal detectable change (MDC90) of 4.7 points.

Conclusions

The Danish Challenge showed excellent reliability in this testing context when physiotherapists scored from live- or video-recorded assessments. The Challenge’s ability to detect 4.7 points change seems a clinically realistic target for progress. 

Reliability and minimal detectable change of the Challenge, an advanced motor skills test for children with cerebral palsy, Danish version

Udgivelsesform Videnskabelige artikler
År 2021
Udgiver Disability and Rehabilitation
ISBN/ISSN https://doi.org/10.1080/09638288.2021.1906332
Længde 8 sider

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Thomas Maribo

Thomas Maribo

+45 2145 2470

thomar@rm.dk

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Thomas Maribo