Validity and reproducibility of a food frequency questionnaire for breast cancer survivors in Korea

• DOI: 10.4162/nrp.2022.16.6.789
• Publication Date: 2022-11-22T07:32:10Z
• Authors: Sang-Eun Moon; Woo-kyoung Shin; Sihan Song; Dahye Koh; Jeong Sun Ahn; Youngbum Yoo; Minji Kang; Jung Eun Lee
• Keywords: Quartile; Food frequency questionnaire

The aim of this study was to examine the validity and reproducibility a food frequency questionnaire (FFQ) developed in Korea for breast cancer survivors.Ninety-nine survivors who completed an FFQ twice three 3-day dietary records (DRs) between 2016-2017 were included. Energy 14 nutrient intakes calculated from FFQs DRs. To determine FFQ, energy-adjusted de-attenuated Pearson correlations two assessments average DRs calculated, reproducibility, degrees agreement first second assessments.Correlation coefficients ranged 0.29 (protein) 0.47 (fat) (median value = 0.36) assessment 0.20 (riboflavin) 0.53 (calcium) 0.37) second. Correlation 0.22 (sodium) 0.62 (carbohydrate) 0.36). Regarding reproducibilities, percentage classifications exact agreements nutrients 27.3% 45.5% (fat). A median 76.8% participants classified into same or adjacent quartiles, while 5.6% extreme quartiles. Bland-Atman plots majority data points macronutrients, calcium vitamins C fell within limits agreement.These results indicated that newly Korean has acceptable as compared with collected over one-year period.