Turkish Translation and Psychometric Properties of the Peabody Developmental Motor Scale-2 in 0-24 Months Turkish At-Risk Infants.

This study was designed to investigate the construct-concurrent validity and reliability of the Turkish version of the Peabody Developmental Motor Scale-2 (PDMS-2) in at-risk infants between 0-24 age in Turkey. In this study, 120 infants (70 males, 50 females) participated in the study (mean corrected age 20.18 ± 22.535 weeks). The PDMS-2 scale consists of two subdimensions, the Fine Motor Quotient (FMQ) and the Gross Motor Quotient (GMQ). Whereas the construct validity was assessed using confirmatory factor analysis, concurrent validity was investigated using the correlation between PDMS-2 and the Alberta Infant Motor Scale and the Hammersmith Infant Neurological Examination with Spearman's correlation analysis. The PDMS-2 was applied twice for test-retest reliability. Cronbach's alpha (α) and the intraclass correlation coefficient (ICC) were used for reliability. ICC value was with 95% CI. The overall reliability coefficient of the test was found to be Croncbach's α = 0.865. TICC values were found (ICC FMQ: 0.998, ICC GMQ: 0.998). Construct validity (${\chi }^2$/SD = 4.396; root mean square error of approximation = 0.021; goodness-of-fit index = 0.951) and concurrent validity (r = 0.502-0.771; p < .05) were confirmed as acceptable. The PDMS-2 demonstrated good psychometric properties and can be used as a reliable and valid measure to assess neurodevelopmental aspects of Turkish at-risk infants.