Reproducibility and comparative validity of a food frequency questionnaire for Australian children and adolescents

摘要: Dietary intake during childhood and adolescence is of increasing interest due to its influence on adult health, particularly obesity, cardiovascular disease diabetes. There a need develop validate dietary assessment methods suitable for large epidemiologic studies children adolescents. Limited scale youth have been undertaken in Australia, partly the lack tool. A self-administered, semi-quantitative food-frequency questionnaire (FFQ), 'Australian Child Adolescent Eating Survey' (ACAES), was developed aged 9-16 years. This study evaluated reproducibility comparative validity ACAES FFQ using assisted food records (FRs) as reference method. The completed twice (FFQ1 FFQ2) at an interval 5 months, along with four one-day FRs. Validity by comparing average FRs FFQ2 (n = 113) well FFQ1 101). Reproducibility two were compared correlations, Kappa statistics Bland-Altman plots. Correlation coefficients ranged from 0.03 retinol 0.56 magnesium transformed, energy-adjusted, deattenuated nutrient data, correlation greater than 0.40 total fat, saturated monounsaturated carbohydrate, sugars, riboflavin, vitamin C, folate, beta-carotene, magnesium, calcium iron. 0.18 0.50 data. ranked individuals reasonably accurately, analysis showing that over 50% participants classified within one quintile all nutrients, only small percentage grossly misclassified (0-7%). first child adolescent specific available ranking intakes Australian adolescents range nutrients research public health interventions.