Growth curves in Down syndrome: implications for clinical practice

Area of Science:

• Pediatrics
• Genetics
• Anthropometry

Background:

• Growth curves are essential for monitoring child development.
• Existing growth charts for Down syndrome (DS) require validation for clinical guideline development.
• Systematic reviews are crucial for assessing the quality of existing growth data.

Purpose of the Study:

• To systematically review and assess the eligibility of existing growth curves for individuals with Down syndrome (DS).
• To identify limitations in current growth curve methodologies for DS populations.
• To inform the development of new, reliable growth charts for DS.

Main Methods:

• A systematic literature search was conducted using PRISMA guidelines between July 2012 and June 2013 in MEDLINE/PubMed and BIREME.
• Inclusion and exclusion criteria were applied to 16 selected articles.
• Analysis focused on sample size, data collection, anthropometric variables, standard deviation scores (SDS), and statistical methods (e.g., LMS).

Main Results:

• Individuals with DS showed growth between -0.4 and -4.0 SDS compared to healthy controls.
• Significant limitations were found in most studies regarding data reporting (e.g., number of observations, mean values, SDs by sex/age).
• Many studies did not employ advanced statistical methods like LMS for data analysis.

Conclusions:

• Current growth curves for Down syndrome (DS) have methodological limitations and require further validation.
• Inconsistencies in data reporting and analysis methods hinder accurate growth assessment in DS.
• Development of new, robust growth curves is necessary to prevent misdiagnoses in children and adolescents with DS.