Sara A. Quandt|Mara Z. Vitolins|Shannon L. Smith|Janet A. Tooze|Ronny A. Bell|Cralen Davis|Robert F. DeVellis|Thomas A. Arcury
Comparative validation of standard, picture-sort and meal-based food-frequency questionnaires adapted for an elderly population of low socio-economic status
Wake Forest University|Wake Forest University|Wake Forest University|Wake Forest University|Wake Forest University|Wake Forest University|University of North Carolina at Chapel Hill|Wake Forest University
compare validity modified block foodfrequency questionnaire ffq picturesort administration ffq psffq meal patternbased questionnaire mpq multiethnic population low socioeconomic status sesparticipants completed six 24hour dietary recalls 24hr six months ffq psffq mpq completed random order subsequent month instruments intervieweradministered psffq mpq developed formative research concerning difficulties older adults responding standard foodfrequency instrumentsrural north carolina usa subjects one hundred twentytwo african american native american white adults aged 65 years approximately onethird ethnic group inclusion criteria included education 12 years income 150 national poverty level medicaid recipientcomparing median intakes average 24hr three diet assessment instruments mpq tended overestimate intakes compared ffq psffq correlations among nutrients obtained 24hr three instruments generally statistically significant positive across nutrients psffq highly correlated 24hr women ffq highly correlated 24hr mendietary assessments using 24hr ffq similar results reported elsewhere although correlations 24hr ffq somewhat lower intervieweradministered dietary assessments used caution evaluate dietary intake among older adults low ses gender differences lower correlations investigated thoroughly assist choosing dietary assessment instruments population