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Growth Charts for Children With Down Syndrome in the United States
Babette S Zemel1, Mary Pipan2, Virginia A Stallings3
1Divisions of Gastroenterology, Hepatology, and Nutrition, and Department of Pediatrics, The University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania; and zemel@email.chop.edu.
Insights
New growth charts for children with Down syndrome (DS) show improved weight and height compared to older US data. These charts help assess growth and nutritional status in children with DS.
Area of Science:
- Pediatrics
- Genetics
- Growth and Development
Background:
- Children with Down syndrome (DS) historically exhibit lower birth weights and slower growth rates.
- Improved medical care has enhanced overall well-being for individuals with DS, but growth trajectory changes remain unclear.
Purpose of the Study:
- To develop novel growth charts specifically for children with Down syndrome.
- To compare these new charts against existing US and UK growth data.
Main Methods:
- The Down Syndrome Growing Up Study (DSGS) collected longitudinal growth data from 637 participants up to 20 years of age.
- Sex-specific growth charts were created using the LMS method for age ranges birth to 36 months and 2 to 20 years.
- Weight-for-length and BMI charts were also generated for comprehensive assessment.
Main Results:
- Developed new DSGS growth charts based on 1520 measurements.
- Charts for infants (<36 months) indicate significant weight improvements compared to older US charts.
- Charts for older children (2-20 years) reveal increased height in contemporary males; overall, DSGS charts align closely with UK charts.
Conclusions:
- The new DSGS growth charts serve as valuable screening tools for growth and nutritional status.
- These charts facilitate comparisons of individual child growth against peers with Down syndrome.
- The findings suggest positive trends in growth parameters for children with DS over time.
Background And Objectives:
Children with Down syndrome (DS) have lower birth weights and grow more slowly than children without DS. Advances in and increased access to medical care have improved the health and well-being of individuals with DS; however, it is unknown whether their growth has also improved. Our objective was to develop new growth charts for children with DS and compare them to older charts from the United States and more contemporary charts from the United Kingdom.
Methods:
The Down Syndrome Growing Up Study (DSGS) enrolled a convenience sample of children with DS up to 20 years of age and followed them longitudinally. Growth parameters were measured by research anthropometrists. Sex-specific growth charts were generated for the age ranges birth to 36 months and 2 to 20 years using the LMS method. Weight-for-length and BMI charts were also generated. Comparisons with other curves were presented graphically.
Results:
New DSGS growth charts were developed by using 1520 measurements on 637 participants. DSGS growth charts for children <36 months of age showed marked improvements in weight compared with older US charts. DSGS charts for 2- to 20-year-olds showed that contemporary males are taller than previous charts showed. Generally, the DSGS growth charts are similar to the UK charts.
Conclusions:
The DSGS growth charts can be used as screening tools to assess growth and nutritional status and to provide indications of how growth of an individual child compares with peers of the same age and sex with DS.
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