Windows of achievement for development milestones of Sri Lankan infants and toddlers: estimation through statistical modelling

摘要

Background The normative age ranges during which cohorts of children achieve milestones are called windows of achievement. The patterns of these windows of achievement are known to be both genetically and environmentally dependent. This study aimed to determine the windows of achievement for motor, social emotional, language and cognitive development milestones for infants and toddlers in Sri Lanka.