Use of a food frequency questionnaire to assess diets of Jamaican adults: Validation and correlation with biomarkers

  • Jackson M
  • Walker S
  • Younger N
 et al. 
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Abstract

Assessment of habitual diet is important in investigations of diet-disease relationships. Many epidemiological studies use the food frequency questionnaire (FFQ) to evaluate dietary intakes but few studies validate the instrument against biological markers. The aim of this study was to assess the validity and reproducibility of a previously validated 70-item food frequency questionnaire (FFQ) that was expanded to 120-items to assess diet-cancer relations.

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