Mututanthri, Shanika, Thoradeniya, Tharanga and Harris, Rebecca 
ORCID: 0000-0002-5891-6826
(2023)
Development and validation of a quantitative food frequency questionnaire to assess free sugar intake among Sri Lankan preschool children.
JOURNAL OF NUTRITIONAL SCIENCE, 12.
e14-.
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Abstract
The present study aims to develop a quantitative food frequency questionnaire (FFQ) to assess free sugar intake as a whole and at the food group levels, retrospectively, over the past 3 months among 4 to 5-year-old preschool children in the Colombo district, Sri Lanka. Then, to assess its reliability and relative validity. In the development phase, three 24-hour dietary recalls (24 hDRs) of 518 preschool children were collected from caregivers. Based on that, a 67-item FFQ was developed, including commonly consumed free sugar-containing food items. The validation study was conducted among another 108 preschool children. The relative validity of the FFQ was assessed by comparing it with the 24 hDRs. The test-retest reliability was assessed by repeated application of the FFQ to the same population after 6 weeks. Wilcoxon sign rank test, cross-classification with weighted Kappa statistic, Spearman rank correlation and Bland-Altman plots were used for comparison. Comparing the free sugar intake calculated by the two methods showed no difference (<i>P</i> = 0⋅13), a good correlation (0⋅89), good agreement in cross-classifying participants (78⋅4 % correctly classified) and a good agreement in Bland-Altman plots. Repeated application of the FFQ yielded; no differences in free sugar intake values (<i>P</i> = 0⋅45) a good correlation (0⋅71), acceptable agreement in cross-classifying participants (52⋅3 % correctly classified) and acceptable agreement in the Bland-Altman plot. Results were the same for all food groups. According to the results, the newly developed quantitative FFQ provides a relatively valid and reliable measure for quantifying free sugar intake among preschool children as a whole or by food group.
| Item Type: | Article |
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| Uncontrolled Keywords: | Development, Food frequency questionnaire (FFQ), Free sugar intake, Preschool children, Relative validation |
| Divisions: | Faculty of Health and Life Sciences Faculty of Health and Life Sciences > Institute of Population Health |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 18 Jul 2023 08:28 |
| Last Modified: | 18 Jul 2023 08:29 |
| DOI: | 10.1017/jns.2023.5 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3171711 |
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