Validity and Reliability of Indonesian Translated Ages and Stages Questionnaires - Third Edition (ASQ-3) as a Screening Tool for Developmental Delay in 1-12 Months Old Children

This study aimed to provide the validity and reliability of the Indonesian ASQ-3 questionnaires as a screening tool for developmentally delayed children aged less than one year old. This study was divided into 2 phases. The first phase (April-June 2018) included the transcultural adaptation of the ASQ-3 questionnaires for 2 to 12 months age groups from English to Indonesian. The second phase (July- September 2018) included a cross-sectional study of Indonesian ASQ-3 questionnaires for parents/caregivers of children aged 1-12 months, with 35 children in each age group by cluster sampling methods, in 2 district areas in East Jakarta.