Acceptability and Reliability of the Bayley Scales of Infant Development III Cognitive and Motor Scales among Children in Makwanpur.
BACKGROUND The Bayley Scales of Infant Development III (BSID III) is an instrument to measure the development of children aged 1 42 months. Our study sought to assess the feasibility and reliability of the BSID III's cognitive and motor sub scales among children in rural Nepal. METHODS For this study, translation and back translation in Nepali and English for cognitive and motor sub scale of BSID III were done. Two testers assessed a total of 102 children aged 1 42 months and were video recorded and rescored by the third tester. Raw scores were calculated for each assessment. Inter and intra observer reliability of scores across the three testers was examined. Raw score was converted into scaled score to examine the mean score. The study received ethical clearance from NHRC. RESULTS A total of 102 children were assessed. The inter rater reliability of the BSID III among three testers using the Intraclass Correlation Coefficient by age group was 0.997 (95% CI: 0.996 0.998) for the cognitive scale, 0.997 (95% CI: 0.996 0.998) for the gross motor scale, and 0.998 (95% CI: 0.997 0.999) for the fine motor scale. All were statistically significant (p< 0.0001) The mean scaled cognitive, fine motor and gross motor development scores in this group of children were 8.3 (SD: 2.5) 8.5 (SD: 2.6) and 9.5 (3.2) respectively. CONCLUSIONS Assessing the cognitive and motor development of children under five using the BSID III was feasible in Makwanpur district, Nepal. The inter rater reliability was highly comparable among the three testers.
Journal of Nepal Health Research Council