The Feasibility and Reliability of the Test of Gross Motor Development (TGMD-3) for Children with Disabilities in Regional Australia: A Pragmatic Pilot Study.

Evaluate feasibility and preliminary inter- and intra-rater reliability of the Test of Gross Motor Development, third edition (TGMD-3) for children with disabilities in regional Australia; comparing "live" and videorecorded scoring. Three physiotherapists (one familiar with TGMD administration, two unfamiliar) completed "live" administration and scoring. Five raters (three physiotherapists, two familiar and one unfamiliar, and two unfamiliar student physiotherapists) scored video-recordings at normal and slow speed. Semi-structured interviews explored raters' experiences using the TGMD-3 for children with disabilities in a regional context, and/or scoring via videorecording. Agreement within and among raters were reported using intraclass correlation coefficients. Raters agreed that TGMD-3 was feasible in terms of acceptability (mean 22.5 min scoring, slow-speed assisted accuracy), practicality (minimal resources), demand (addressed client goals), and implementation and integration into practice in regional Australia. Subscale and total scores showed good-to-excellent intra-rater (ICC = 0.73-0.99), and moderate-to-good inter-rater reliability for all but one student rater (ICC = 0.29-0.88). Filming recommendations were developed to enhance scoring. The TGMD-3 is feasible and has acceptable reliability when measuring high-level gross-motor performance for children with disabilities in regional Australia using live or video scoring. Modifications to criterion descriptors and more disability-targeted training, are recommended to optimize scoring consistency for this population.