Cut-Off Point Determination of the Persian Version of Bayley Scales of Infant and Toddlers Development III in 1-42 Months Old Children in Tehran City, Iran

The Bayley Scales of Infant and Toddler Development–3rd Edition (Bayley- III) is a well-known diagnostic developmental assessment tool for children aged 1-42 months. This study aimed to provide a norm reference tool for evaluation of children at risk for developmental delay during developmental screening tests. This was a cross-sectional study, through which the cut-off points of Bayley- III, for children 1 to 42 months in Tehran, Iran were derived. Overall, 402 children in 17 age group, were enrolled from Tehran health centers for developmental assessment in cognitive, communicative (receptive & expressive) and motor (fine & gross) domains by Bayley III. Totally, 195 girls (48.4%) and 207 boys (51.6%) were enrolled. Measures of central tendency and dispersion data including mean and standard deviation were calculated regarding the age group, gender, and subscales of Bayley III. Persian version of Bayley-III can be used as a diagnostic tool for evaluation of children suspected to have developmental delay in screening tests in Tehran City. In addition, it can be used as a gold standard tool for concurrent evaluation of results of other developmental tests.

کلیدواژه ها:

Child ، Development ، Cut off points ، Bayley III