Reliability and validity of the 24-hour recall

Area of Science:

• Nutrition Science
• Pediatric Health
• Dietary Assessment Methods

Background:

• Accurate dietary assessment is crucial for understanding nutritional status in children, especially those with chronic conditions.
• The 24-hour dietary recall is a commonly used method, but its reliability and validity require evaluation in specific pediatric populations.

Purpose of the Study:

• To statistically evaluate the reliability and validity of the 24-hour dietary recall method.
• To compare observed versus recalled kilocalorie and protein intake in children aged 10-12 with specific health conditions.

Main Methods:

• Unobtrusive observation of food intake in 28 children (aged 10-12) with asthma, cystic fibrosis, or diabetes.
• Dietary data collected via observation and subsequent 24-hour recall interviews within 24 hours.
• Statistical comparison using paired t-tests and regression analysis.

Main Results:

• A large and statistically significant difference was found between observed and recalled kilocalorie and protein intakes.
• The reliability coefficient for the 24-hour recall method was low, though statistically significant.
• Significant discrepancies indicate potential under- or overestimation of intake by the recall method.

Conclusions:

• The 24-hour dietary recall method demonstrates limited usefulness for assessing kilocalorie and protein intake in children aged 10-12 with the studied chronic conditions.
• Further research is needed to refine dietary assessment tools for pediatric populations with complex health needs.