Comparison of 4 questionnaires for assessment of fruit and vegetable intake

Objective. This study compared Fruit and vegetable assessments derived from I self-administered questionnaires. Methods. Among 102 adolescents, servings of fruits and vegetables assessed by 4 questionnaires were compared with estimates from 24-hour recalls. Results, nle prevalence of consuming 5 or more servings of fruits and vegetables a day was underestimated by the questionnaires, Questionnaires asking subjects to recall their diet over the previous year were more effective iu ranking subjects (r's greater than or equal to.42) than those assessing previous-day diet (r's greater than or equal to.30). onclusions. Brief assessments of fruit and vegetable intake are more useful for ranking subjects than for estimating prevalence of consumption of 5 or more servings per day.