07 - Validity of the EatWellQ8 online food frequency questionnaire against a 4-day weighed food record

BACKGROUND: The food frequency questionnaire (FFQ) is the method of choice for dietary assessment in epidemiological studies. FFQs focusing on mixed-dishes and simple food items are useful where mixed-dishes are an essential part of food consumption. OBJECTIVE: Regarding the fact that the nature of the Iranian diet is mixed-dish, the present study aimed to design and assess the validity and reproducibility of a dish-based semi-quantitative FFQ in the Iranian adult population. METHODS: A list of 302 food items was collected from four geographical areas around Iran. The validation study was conducted on 97 healthy adults. The FFQ was introduced at the beginning of the study and 10 months after; two three-day food records were collected during the study. Also, biomarkers including 24-hour urinary potassium and nitrogen, serum retinol, and alpha-tocopherol were measured. RESULTS: A 142-food-item FFQ was concluded. The correlation coefficient between the second FFQ and the second three-day food record ranged from 0.225 to 0.323 for macronutrients and 0.128 to 0.476 for micronutrients. The percentile agreements (same or adjacent quartile) between the two methods were more than 60%for all nutrients. The intraclass correlation coefficient between FFQs (except for vitamin E) ranged from 0.363 to 0.578. The correlation coefficient between the second FFQ and the second biomarker assessment was 0.241 for protein.

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Use of a three-day estimated food record, a 72-hour recall and a food-frequency questionnaire for dietary assessment in a Mediterranean Spanish population

Clinical Nutrition ◽

10.1054/clnu.2001.0460 ◽

2001 ◽

Vol 20 (5) ◽

pp. 429-437 ◽

Cited By ~ 113

Author(s):

H. SCHRÖDER ◽

M.I. COVAS ◽

J. MARRUGAT ◽

J. VILA ◽

A. PENA ◽

...

Keyword(s):

Food Frequency Questionnaire ◽

Dietary Assessment ◽

Spanish Population ◽

Food Record ◽

Food Frequency

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A culture-sensitive quantitative food frequency questionnaire used in an African population: 2. Relative validation by 7-day weighed records and biomarkers

Public Health Nutrition ◽

10.1079/phn200041 ◽

2001 ◽

Vol 4 (1) ◽

pp. 63-71 ◽

Cited By ~ 68

Author(s):

UE MacIntyre ◽

CS Venter ◽

HH Vorster

Keyword(s):

South Africa ◽

Nitrogen Excretion ◽

Food Record ◽

Food Frequency ◽

North West ◽

The North ◽

Weighed Food Record ◽

Study Participants ◽

Urinary Nitrogen Excretion ◽

Urinary Nitrogen

AbstractObjective:To determine the relative validity of the culture-sensitive quantitative food frequency questionnaire (QFFQ) developed for the Transition, Health and Urbanisation in South Africa (THUSA) study by 7-day weighed food records, urinary nitrogen excretion and basal metabolic rate (BMR).Design:A cross-sectional study.Setting:A community-based study in a population stratified according to level of urbanization.Subjects:Residents of the North West Province, South Africa, aged between 15 and 65 years. The weighed food record study comprised 74 participants while 104 participants collected 24-hour urine samples.Methods:All participants were interviewed using the QFFQ. For the weighed food record study, participants kept detailed weighed food diaries for seven consecutive days. For the urinary nitrogen study, participants made one 24-hour urine collection. Completeness of the urine collections was checked against 240 mg para-aminobenzoic acid. BMR was estimated by the Schofield equations.Results:Spearman rank correlation coefficients between the QFFQ and weighed food record ranged between 0.14 (fibre) and 0.59 (vitamin C). The QFFQ tended to underestimate intakes compared with the weighed records. Quintile distributions were similar for both methods. The correlation between urinary nitrogen excretion and dietary intake was poor. Possible underreporting was identified for 43% of the participants with the QFFQ and 28% with the weighed food record.Conclusions:The QFFQ appeared to be a relatively valid instrument for the assessment of dietary intakes of the population of the North West Province. The use of biomarkers in this population was difficult and needs further investigation.

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Comparison between brief food frequency questionnaire and food record to assess the energy and protein intake of hemodialysis patients at Dr. Sardjito Hospital in Indonesia

Saudi Journal of Kidney Diseases and Transplantation ◽

10.4103/1319-2442.225196 ◽

2018 ◽

Vol 29 (1) ◽

pp. 145

Author(s):

Susetyowati ◽

Hanifah Wulandari ◽

Heru Prasanto

Keyword(s):

Food Frequency Questionnaire ◽

Protein Intake ◽

Hemodialysis Patients ◽

Food Record ◽

Food Frequency

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Validation of a Quantitative Food Frequency Questionnaire for a Japanese Population in Hawaii

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000562 ◽

2019 ◽

Vol 89 (3-4) ◽

pp. 200-209

Author(s):

Mohammadreza Pakseresht ◽

Maj Earle ◽

Fariba Kolahdooz ◽

Loïc Le Marchand ◽

Sangita Sharma

Keyword(s):

Vitamin D ◽

Food Frequency Questionnaire ◽

Dietary Fibre ◽

Saturated Fatty Acids ◽

Kappa Statistics ◽

Japanese American ◽

Food Record ◽

Cross Sectional ◽

Food Frequency ◽

Cross Classification

Abstract. Objective: To measure the validity of a quantitative food frequency questionnaire (QFFQ). Design : A cross-sectional validation study of the QFFQ against a four-day food record (4DR) using Spearman correlation, cross-classification, kappa statistics, and Bland–Altman plotting. Setting : The Gastroenterology Department of Kaiser Permanente Hawaii. Subjects: 76 healthy Japanese American men and women, aged 40–75 years. Results : Somewhat stronger average correlations were observed between the QFFQ and the 4DR for macronutrients compared to micronutrients (Spearman rho of 0.47 vs. 0.35). Moderate correlations between the two tools were observed for macronutrients (including saturated fatty acids and dietary fibre), iron, β-carotene, vitamin C, and ethanol ( rho: 0.38–0.58). Overall, stronger correlations were found among men than women between the two tools (mean rho 0.41 vs. 0.26). In a cross classification analysis, for more than 75% of the observations, a complete to relative agreement between the two methods was observed for fat, α-carotene, folate, vitamin D, and ethanol. Sex difference in agreement was minimal in cross-classification (overall extreme misclassification of 9.80% for men and 12.40% for women). Bland–Altman plots showed over-estimations of dietary fibre and α-carotene intake and an under-estimation of cholesterol intake by the QFFQ at high levels of consumption. However, the QFFQ estimation for fat, dietary fibre, folate, cholesterol, α-carotene, vitamins D and C, and ethanol intake was less than 7% different compared to the 4DR. Conclusions: The QFFQ has an adequate validity for fat, folate, vitamin D, and ethanol and can correctly categorize participants for intakes of cholesterol, dietary fibre, α-carotene, and zinc.

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