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Validation of an estimated food record
1School of Nutrition, University of Costa Rica, Apartado Postal 28-2050, San Pedro Montes de Oca, San José, Costa Rica, Central America. achinnoc@cariari.ucr.ac.cr
Public Health Nutrition
|October 3, 2006
Summary
The estimated food record (EFR) is a valid tool for assessing food consumption and nutrient intake in Costa Rican adults, showing favorable comparison to weighed food records (WFR). This dietary survey method supports its use in the region.
Area of Science:
- Nutrition Science
- Dietary Assessment Methods
- Public Health Nutrition
Background:
- Accurate dietary assessment is crucial for understanding population health.
- The estimated food record (EFR) offers a potentially simpler alternative to weighed food records (WFR) for large-scale surveys.
- Validation is needed to confirm the EFR's suitability for specific populations, such as Costa Rican adults.
Purpose of the Study:
- To validate the estimated food record (EFR) against the weighed food record (WFR) method.
- To assess the accuracy of EFR for determining food consumption and nutrient intakes.
- To evaluate the EFR's utility in a Costa Rican adult population.
Main Methods:
- A weighed food record (WFR) served as the reference method over seven consecutive days.
- Subjects completed two estimated food records (EFRs): a 4-day and a 3-day record, using home measures and photographs.
- The study included sixty Costa Rican adults (30 men, 30 women) from urban and rural settings.
Main Results:
- The EFR yielded statistically significant lower average intake estimates for energy and 12 of 22 nutrients.
- Correlation coefficients between EFR and WFR ranged from 0.68 (polyunsaturated fats) to 0.87 (calcium).
- Rural participants showed greater discrepancies, partly due to underestimation of rice and beans.
Conclusions:
- The EFR validation results compare favorably with international findings.
- The EFR demonstrates acceptable accuracy for dietary surveys in Costa Rican adults.
- The study supports the use of EFR for assessing dietary intake in this population.
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