Errors arising through using the Harvard tables and percentage levels of median weight-for-age in assessing...

Area of Science:

• Pediatrics
• Nutritional Science
• Public Health

Background:

• Assessing preschool children's nutritional status is crucial for early intervention.
• Existing weight-for-age standards may have limitations in diverse populations.
• Previous studies have indicated potential sex-based differences in growth patterns.

Purpose of the Study:

• To evaluate the accuracy of weight-for-age Harvard centiles in assessing nutritional status of preschool children in Sierra Leone.
• To investigate sex-specific discrepancies in weight-for-age distributions.
• To compare these distributions with international reference data.

Main Methods:

• A study involving 417 urban and 379 rural preschool children in Sierra Leone.
• Weight measurements were compared against weight-for-age Harvard 3rd centiles and 80% median levels.
• Analysis included sex-specific comparisons and contrasts with London and Hong Kong growth data.

Main Results:

• Significant discrepancies were observed between sexes in weight-for-age distributions.
• Girls' weight-for-age centile distributions were notably wider than boys'.
• The 80% median levels showed substantial variation compared to the 3rd centiles, differing significantly between Hong Kong and London data.

Conclusions:

• The weight-for-age Harvard centiles may lead to inaccurate nutritional status assessments in preschool children.
• The "percentage method" for nutritional assessment is potentially misleading due to its failure to account for standard distribution ranges.
• Sex-specific median weight-for-age levels vary considerably, impacting the comparability of nutritional status assessments across different populations.