Updated evidence-based developmental attainments for children: First 6 years.

An accurate and well-rounded understanding of child development is essential to optimize child functioning and health. The chart empowers clinicians to give parenting guidance and to evaluate age-specific developmental attainment of their pediatric patients. A practical knowledge translation tool, the chart integrates a comprehensive array of developmental skill attainments, citing the range of sources from classic to current literature. It includes definitions, explanations, and examples for skills, attainment age range, percentile, and oldest age of attainment where available so that the reader can 'estimate the age' for a child's skills in each developmental sector. Sub-headings focus the clinician's search for skills. This updated office reference is of critical use when clinicians guide parents with strategies suited to the child's level of developmental skills. With levels of evidence described, this clinical tool could be used for future national or international studies to develop strategies most useful for clinicians, trainees of different levels, and parents supporting child development.