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The Evaluation and Use of a Food Frequency Questionnaire Among the Population in Trivandrum, South Kerala, India.

ABSTRACT: Dietary record tools such as food frequency questionnaire (FFQ) and food diaries (FD) are the most commonly used choices for assessing dietary intakes in most large-scale epidemiological studies. The authors developed a self-administered 360-item food frequency questionnaire (FFQ) to assess dietary intakes amongst a population-based cohort in South Kerala. In the validation study (n = 460), the data were collected using FFQs that were administered on three different occasions which were then compared to 7-day food records. The intake of foods and nutrients was higher as determined by the FFQ than that assessed using food records. Spearman correlations for macro-nutrients ranged from 0.72 for protein to 0.61 for carbohydrates and for micronutrients, from 0.71 for vitamin B6 to 0.34 for magnesium. The correlation was improved with energy-adjusted nutrient intakes. On average, the exact agreement for the macronutrients ranged from 48.2% to 57.1%, and that for micronutrients ranged from 66.7% to 41.9%, with the median percentage of 49.58%. The authors conclude that the FFQ has an acceptable reproducibility, however, there was a systematic trend towards higher estimates with the FFQ for most nutrients compared to the FD records.

SUBMITTER: Vijay A

PROVIDER: S-EPMC7071154 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature

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The Evaluation and Use of a Food Frequency Questionnaire Among the Population in Trivandrum, South Kerala, India.

Vijay Amrita A Mohan Leena L Taylor Moira A MA Grove Jane I JI Valdes Ana M AM Aithal Guruprasad P GP Shenoy K T KT

Nutrients 20200131 2

Dietary record tools such as food frequency questionnaire (FFQ) and food diaries (FD) are the most commonly used choices for assessing dietary intakes in most large-scale epidemiological studies. The authors developed a self-administered 360-item food frequency questionnaire (FFQ) to assess dietary intakes amongst a population-based cohort in South Kerala. In the validation study (<i>n</i> = 460), the data were collected using FFQs that were administered on three different occasions which were t ...[more]

PMID: 32024020

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Project description:BACKGROUND:Food frequency questionnaires (FFQs) are often used to assess dietary intakes due to their ability to assess intake over extended periods, their low respondent burden, and their cost-effectiveness. A quantitative FFQ that includes locally appropriate food items for 5-year-old children in a multiethnic Asian population was developed, but its validity has not previously been evaluated. OBJECTIVE:To evaluate the relative validity of a newly developed FFQ as a dietary assessment tool for 5-year-old children in a multiethnic Asian population. DESIGN:The 112 -food item FFQ was administered by trained interviewers to caregivers of children. Frequency of food items consumed in the previous month and portion size information were collected. The FFQs were evaluated against 3-day nonweighed diet records (DRs) completed by caregivers. PARTICIPANTS/SETTING:The dietary data of 361 children aged 5 years from the Growing Up in Singapore Towards Healthy Outcomes mother-offspring cohort were collected in 2015-2016. MAIN OUTCOME MEASURES:Nutrients of interest included energy, macronutrients, fiber, cholesterol, vitamin A, beta carotene, calcium, and iron, calculated from the FFQs and DRs. STATISTICAL ANALYSES PERFORMED:Nutrient intakes according to FFQs in relation to DRs were assessed using Pearson's correlation, Lin's concordance, Bland-Altman plots, quintile joint classification, and Cohen's ? statistics. RESULTS:The highest energy-adjusted correlation (Pearson's r=0.71) and concordance (Lin's concordance=0.69) were observed for calcium. Fiber, saturated fat, polyunsaturated fatty acids (PUFA), cholesterol, and iron also showed correlation coefficients and concordance of at least 0.40. Bland-Altman plots suggested no substantial bias across ranges of intakes for the nutrients with correlations and concordance of 0.40 or above. Quintiles joint classification showed substantial agreement for calcium (?=0.66), and moderate agreement for iron, fiber, saturated fat, polyunsaturated fat, and beta carotene (?=0.59, 0.54, 0.49, 0.44, 0.43, respectively). CONCLUSIONS:The newly developed FFQ is in reasonable agreement with DR for estimating intakes of calcium, fiber, saturated fat, PUFA, cholesterol, and iron. In addition, the FFQ is able to classify children according to quintiles of nutrient intakes, with moderate to substantial quintile agreements between FFQ and DR for calcium, iron, fiber, saturated fat, PUFA, and beta carotene. To assess the remaining nutrients, DR method is recommended instead of the FFQ.

Dataset Information

The Evaluation and Use of a Food Frequency Questionnaire Among the Population in Trivandrum, South Kerala, India.

Publications

The Evaluation and Use of a Food Frequency Questionnaire Among the Population in Trivandrum, South Kerala, India.

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