Validating a Food Frequency Questionnaire for Jamaican Adults
Author Information
Author(s): Maria D Jackson, Susan P Walker, Novie M Younger, Franklyn I Bennett
Primary Institution: University of the West Indies, Mona, Kingston, Jamaica
Hypothesis
The study aims to assess the validity and reproducibility of an expanded food frequency questionnaire (FFQ) for evaluating dietary intakes in relation to cancer.
Conclusion
The expanded FFQ had good relative validity for estimating food group and nutrient intakes and was a reliable measure of habitual intake.
Supporting Evidence
- The FFQ showed moderate to high validity correlations for energy-adjusted nutrients.
- Calibration with biomarkers indicated modest correlations with serum cholesterol and folate.
- Reproducibility correlations for nutrients ranged from 0.50 to 0.84.
Takeaway
Researchers created a questionnaire to help people in Jamaica track what they eat, and it works pretty well when compared to other methods.
Methodology
The study compared dietary intakes from a 120-item FFQ with twelve 24-hour recalls and correlated these with biomarkers in a subset of participants.
Potential Biases
Potential biases may arise from self-reported dietary data and the exclusion of certain participants.
Limitations
The study was limited by the use of only two biomarkers and the exclusion of participants with implausible energy intakes.
Participant Demographics
Participants included 100 free-living adults from urban and rural areas in Jamaica, with a mix of genders and age categories.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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