Reliability of the test of gross motor development second edition (TGMD-2) for Kindergarten children in Myanmar.
Thanda Aye, Khin Saw Oo, Myo Thuzar Khin and 2 others
PMID 29184278WHAT IT FOUND
TGMD-2 scores for kindergarten children in Myanmar were similar between examiners and when the same examiner rescored videos.
Retest agreement was lower, and children scored higher on the second occasion.
Key findings
01Three examiners scored the same video recordings: ICC was 0.95 for locomotor scores, 0.88 for object control scores and 0.89 for gross motor quotient.
02One examiner rescored the same videos after six weeks: ICC was 0.98 for locomotor scores, 0.95 for object control scores and 0.97 for gross motor quotient.
03When 25 children were retested four weeks later, locomotor ICC was 0.82, object control ICC was 0.79 and gross motor quotient ICC was 0.76; Pearson correlations were 0.69, 0.67 and 0.62.
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What it does not show
All children were from one public school in Yangon and were only kindergarten age. The results may not apply to children in other regions, schools or ages. Children with known developmental disability, obvious deformity, or orthopedic injury in the past six months were excluded. The test was not evaluated in children who are most likely to need gross motor assessment. The examiners had finished TGMD-2 training but none had prior experience administering TGMD-2. Two raters had more familiarity with the test than the third. The test-retest interval was four weeks. The children were one month older at retest and performed better, which may affect reliability estimates. Some object control skills were unfamiliar to the children. The paper says striking a stationary ball is important for American children but not widely used in Myanmar games and daily play, and the majority of subjects had not used a bat and batting tee before.
Declared interests
No conflict of interest was declared.
The easy way to misread this
Do not assume TGMD-2 is equally reliable for all Myanmar children or for children with disabilities. The study included only healthy kindergarten children in Yangon and excluded known developmental disability, obvious deformity, and recent orthopedic injury.