Sugar snack consumption in Ugandan school children: validity and reliability of a food frequency questionnaire
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Date
2006
Journal Title
Journal ISSN
Volume Title
Publisher
Community Dentistry and Oral Epidemiology
Abstract
This study assessed the reproducibility and relative
validity of an eight-item self-administered food frequency questionnaire (FFQ)
on intake of sugared snacks in Ugandan schoolchildren. A 5-day precoded food
behaviour checklist (FBC) was used as validation criteria. Sociodemographic
correlates of a sum frequency sugar score were explored. Methods: The study
was conducted in Kampala, Uganda, in 2004. Six hundred and fourteen
schoolchildren (mean age 12.4 years) completed the FFQ on cakes/biscuits,
chocolate, ice sticks, soft drinks, coffee, tea, sugared desserts and sweets/
candies at school. They were examined clinically for dental caries. Forty
students completed the FFQ twice, 1 week apart and 325 students completed
the 5 day FBC at school. Results: The mean decayed, missing and filled tooth
index score was 0.98 (SD 1.6, range 0–15). Reproducibility scores (Cohen’s
kappa) for the sugar items ranged from 0.17 (ice sticks) to 0.55 (biscuits). No
differences were seen between the average intakes at test and retest. Higher
intake was reported in FFQ than in FBC across all sugar items. Crude agreement
between students reporting intake at least 3–5 times a week/less than three
times a week ranged from 50% to 55% (e.g. biscuits, chocolate) to 87% (tea).
Spearman’s correlation coefficients ranged from 0.14 (desserts) to 0.27 (sweets).
anova revealed significant increase (P ¼ 0.001) in the mean FBC sum scores by
increasing quartiles of the FFQ sum scores. The average sum FFQ sugar scores
were higher in girls than in boys and higher in older than in younger
students. Conclusion: Fair reproducibility was established for the FFQ sugar
items. The FFQ was acceptable in classifying individuals into broad categories
of low and high sugar consumption.
Description
Keywords
Reliability, Schoolchildren, Sugared snacks, Uganda, Validity
Citation
Kiwanuka, S. N., Åstrøm, A. N., & Trovik, T. A. (2006). Sugar snack consumption in Ugandan schoolchildren: validity and reliability of a food frequency questionnaire. Community Dentistry and Oral Epidemiology, 34(5), 372-380. https://doi.org/10.1111/j.1600-0528.2006.00287.x