Reproducibility of A Non-Quantitative Food Frequency Questionnaire (62-Item FFQ-6) and PCA-Driven Dietary Pattern Identification in 13–21-Year-Old Females
| Autor: | Ewa Niedzwiedzka, Joanna Kowalkowska, Lidia Wadolowska |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Adolescent Sample (material) lcsh:TX341-641 030209 endocrinology & metabolism FFQ behavioral disciplines and activities Article 03 medical and health sciences Young Adult 0302 clinical medicine Cohen's kappa Sex Factors Age groups kappa coefficient Surveys and Questionnaires Medicine Humans reproducibility Reproducibility Principal Component Analysis 030109 nutrition & dietetics Nutrition and Dietetics reliability Food frequency business.industry girls Age Factors Food frequency questionnaire Reproducibility of Results dietary assessment Feeding Behavior Dietary pattern Diet Records Test (assessment) Adolescent Behavior Female dietary pattern women Poland business lcsh:Nutrition. Foods and food supply test–retest Food Science Demography |
| Zdroj: | Nutrients Volume 11 Issue 9 Nutrients, Vol 11, Iss 9, p 2183 (2019) |
| ISSN: | 2072-6643 |
| Popis: | The aim of this study was to evaluate the test&ndash retest reproducibility of a non-quantitative food frequency questionnaire (acronym: 62-item FFQ-6) and the possibility of identifying dietary patterns (DPs) in 13&ndash 21-year-old females. The study involved 97 females within three age groups: 13&ndash 15, 16&ndash 18, and 19&ndash 21 years, including 31, 38, and 28 subjects, respectively. The questionnaire was completed twice with a two-week interval (test and retest). For the total sample, using a principal component analysis (PCA), two similar PCA-driven DPs (DP1 and DP2) were identified separately from test data and retest data, considering two sets of input variables. 60-item-DP1 and 60-item-DP2 were identified after excluding two items&mdash vegetables and fruits in general&mdash due to including single items of various kinds of vegetables and fruits. After an aggregation of some items of the questionnaire, 25-item-DP1 and 25-item-DP2 were identified. The kappa statistic (test vs. retest) in the total sample averaged at 0.52 (0.32&ndash 0.72 for food items), while within age groups, it averaged at 0.41, 0.53, and 0.65, respectively. The percentage of subjects classified into the same food frequency category (test vs. retest) in the total sample averaged at 68% (51%&ndash 89% for food items), while within age groups, it averaged at 60%, 68%, and 77%, respectively. The Spearman correlations between dietary pattern scores (test vs. retest) in the total sample were: 0.84 (within age groups 0.83, 0.81, and 0.78, respectively) for 60-item-DP1, 0.68 (within age groups 0.24, 0.79, and 0.76, respectively) for 60-item-DP2, 0.76 (within age groups 0.56, 0.82, and 0.89, respectively) for 25-item-DP1, and 0.48 (within age groups 0.40, 0.57, and 0.53, respectively) for 25-item-DP2 (p < 0.05 for all). In conclusion, the test&ndash retest reproducibility of the 62-item FFQ-6 was good or very good for most food items, with a tendency to be higher in older age groups of females under study. Due to the acceptable-to-good reproducibility of dietary pattern identification, the use of a 62-item FFQ-6 to describe the overall diet of young Polish females can be recommended. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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