scholarly journals Reproducibility and validity of a food frequency questionnaire among fourth to seventh grade inner-city school children: implications of age and day-to-day variation in dietary intake

1999 ◽  
Vol 2 (3) ◽  
pp. 293-300 ◽  
Author(s):  
Alison E Field ◽  
Karen E Peterson ◽  
Steve L Gortmaker ◽  
Lilian Cheung ◽  
Helaine Rockett ◽  
...  
Keyword(s):  
High School Students ◽  
Vitamin C ◽  
Inner City ◽  
Dietary Intake ◽  
Junior High School ◽  
Low Income ◽  
Food Frequency Questionnaire ◽  
Fifth Grade ◽  
Seventh Grade ◽  
Food Frequency

AbstractObjectiveTo assess the reproducibility and validity of a semiquantitative food frequency questionnaire (FFQ) to classify children and adolescents in terms of daily servings of fruits and vegetables and intake of calories, protein, fat, carbohydrate, dietary fibre, vitamin C, phosphorous, calcium and iron.DesignFFQs were collected in the autumn of 1993 and 1994. Four 24-hour diet recalls were collected during the same 1-year period and their mean was compared to the FFQ diet estimates.SettingLow income, inner-city state schools.SubjectsA sample of 109 inner-city fourth to seventh grade students.ResultsThe 1-year reproducibility of the FFQ, assessed with Spearman correlations, was lower among the fourth and fifth (range: r = −0.26 to 0.40) than the sixth and seventh grade students (range: r = 0.18–0.47). After adjusting for day-to-day variation in dietary intake, for most nutrients and foods the correlations between the FFQ and the 24-hour recalls remained greater among the junior high school students (fourth to fifth grade range: r = 0.0–0.42; sixth to seventh grade range: = 0.07–0.76).ConclusionsInner-city sixth and seventh grade students demonstrated the ability to provide valid estimates of intake of calories, carbohydrate, calcium, phosphorous, iron and vitamin C over the past year. However, children in the fourth and fifth grades experienced some difficulty in completing the FFQ. Our results suggest that, before using this instrument with fourth and fifth grade children, investigators should assess whether study participants can think abstractly and are familiar with the concept of ‘average intake’.

scholarly journals Reproducibility and validity of a food-frequency questionnaire for use among low-income Brazilian workers

2003 ◽  
Vol 6 (8) ◽  
pp. 821-827 ◽  
Author(s):  
Nélida Schmid Fornés ◽  
Maria Luiza Ferreira Stringhini ◽  
Berenice Müller Elias
Keyword(s):  
Vitamin C ◽  
Total Energy ◽  
Low Income ◽  
Food Frequency Questionnaire ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Reference Method ◽  
Nutrient Intakes ◽  
Low Literacy ◽  
Food Frequency

AbstractObjectives:To assess the reproducibility and validity a 127-item, habitual intake, food-frequency questionnaire (FFQ), developed for low-income and low-literacy Brazilian workers, by comparison with a 24-hour dietary recall (24-HDR).Design:The FFQ and 24-HDR were interviewer-administered at the local workplace to each subject twice, with a period of 6 months between estimates; and four 24-HDRs were conducted during the 4-month period between the two FFQs (FFQ1 and FFQ2). Reproducibility was tested by comparing mean nutrient intakes from the two FFQs. Validity was determined by comparing the mean nutrient intakes from the FFQs with the corresponding averages of the six 24-HDRs (reference method).Setting:Goiânia City, in Central West Brazil.Subjects:The study was based on 104 (62 women and 42 men) subjects, aged 18 to 60 years, who were randomly selected.Results:Dietary intake from the FFQ was higher than from the 24-HDR. Reproducibility was assessed by Pearson correlation coefficients for nutrients from FFQ1 and FFQ2, and ranged from 0.23 for retinol to 0.69 for total energy (mean 0.52). Intra-class coefficients for nutrients averaged by the 24-HDRs ranged from 0.29 for vitamin C to 0.76 for total energy; retinol was not significant. In the validation study, correlation between the FFQ and the 24-HDR ranged between 0.21 for vitamin C and 0.70 for total energy (mean 0.50). Adjusting for total energy lowered the coefficients, except for calcium, retinol and vitamin C. Coefficients increased with attenuation, ranging from 0.35 for carbohydrate to 0.65 for calcium.Conclusions:Results indicate that this questionnaire had satisfactory reproducibility and reasonable validity.

scholarly journals Nutritional methods in the European Prospective Investigation of Cancer in Norfolk

2001 ◽  
Vol 4 (3) ◽  
pp. 847-858 ◽  
Author(s):  
Sheila A Bingham ◽  
Ailsa A Welch ◽  
Alison McTaggart ◽  
Angela A Mulligan ◽  
Shirley A Runswick ◽  
...  
Keyword(s):  
Vitamin C ◽  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Nutrient Intake ◽  
Plasma Vitamin ◽  
Nutrient Intakes ◽  
Food Frequency ◽  
Men And Women ◽  
Food And Nutrient Intake ◽  
The Uk

AbstractObjective:To describe methods and dietary habits of a large population cohort.Design:Prospective assessment of diet using diet diaries and food-frequency questionnaires, and biomarkers of diet in 24-h urine collections and blood samples.Setting:Free living individuals aged 45 to 75 years living in Norfolk, UK.Subjects:Food and nutrient intake from a food-frequency questionnaire on 23 003 men and women, and from a 7-day diet diary from 2117 men and women. Nitrogen, sodium and potassium excretion was obtained from single 24-h urine samples from 300 individuals in the EPIC cohort. Plasma vitamin C was measured for 20 846 men and women.Results:The food-frequency questionnaire (FFQ) and the food diary were able to determine differences in foods and nutrients between the sexes and were reliable as judged by repeated administrations of each method. Plasma vitamin C was significantly higher in women than men. There were significant (P<0.001) differences in mean intake of all nutrients measured by the two different methods in women but less so in men. The questionnaire overestimated dairy products and vegetables in both men and women when compared with intakes derived from the diary, but underestimated cereal and meat intake in men. There were some consistent trends with age in food and nutrient intakes assessed by both methods, particularly in men. Correlation coefficients between dietary intake assessed from the diary and excretion of nitrogen and potassium in a single 24-h urine sample ranged from 0.36 to 0.47. Those comparing urine excretion and intake assessed from the FFQ were 0.09 to 0.26. The correlations between plasma vitamin C and dietary intake from the first FFQ, 24-h recall or diary were 0.28, 0.35 and 0.40.Conclusions:EPIC Norfolk is one of the largest epidemiological studies of nutrition in the UK and the largest on which plasma vitamin C has been obtained. Methods for obtaining food and nutrient intake are described in detail. The results shown here for food and nutrient intakes can be compared with results from other population studies utilising different methods of assessing dietary intake. The utility of different methods used in different settings within the main EPIC cohort is described. The FFQ is to be used particularly in pooled analyses of risk from diet in relation to cancer incidence within the larger European EPIC study, where measurement error is more likely to be overcome by large dietary heterogeneity on an international basis. Findings in the UK, where dietary variation between individuals is smaller and hence the need to use a more accurate individual method greater, will be derived from the 7-day diary information on a nested case–control basis. 24-h recalls can be used in the event that diary information should not be forthcoming from some eventual cases. Combinations of results utilising all dietary methods and biomarkers may also be possible.

An Evaluation of a Food Frequency Questionnaire for Assessing Dietary Intake of Specific Carotenoids and Vitamin E among Low-Income Black Women

1991 ◽  
Vol 134 (6) ◽  
pp. 658-671 ◽  
Author(s):  
Ralph J. Coates ◽  
J. William Eley ◽  
Gladys Block ◽  
Elaine W. Gunter ◽  
Anne L. Sowell ◽  
...  
Keyword(s):  
Vitamin E ◽  
Black Women ◽  
Dietary Intake ◽  
Low Income ◽  
Food Frequency Questionnaire ◽  
Food Frequency

Evaluation of a food frequency questionnaire to determine dietary intake in a large cohort: The SAPALDIA study

2012 ◽  
Vol 37 (03) ◽  
Author(s):  
N Steinemann ◽  
IU Leonhäuser ◽  
N Probst-Hensch ◽  
L Grize ◽  
C Brombach
Keyword(s):  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Large Cohort ◽  
Food Frequency

Faktor Gizi dan Prestasi Belajar Siswa Sekolah Menengah Kejuruan

2020 ◽  
Vol 4 (1) ◽  
pp. 69-78
Author(s):  
Nurlaili Handayani ◽  
Muhammad Dawam Jamil ◽  
Ika Ratna Palupi
Keyword(s):  
Vitamin C ◽  
Food Frequency Questionnaire ◽  
Chi Square ◽  
Cross Sectional ◽  
Food Frequency

Faktor gizi merupakan salah satu faktor yang memengaruhi kemampuan belajar anak, termasuk pada siswa Sekolah Menengah Kejuruan (SMK) yang berada pada usia remaja dan disiapkan sebagai tenaga terampil sesuai bidang keahliannya. Penelitian ini bertujuan menganalisis hubungan faktor gizi yang meliputi asupan energi dan zat gizi (karbohidrat, protein, lemak, zat besi, vitamin C, dan zink), kebiasaan sarapan, dan status gizi dengan prestasi belajar pada siswa SMK di Sleman, DIY. Penelitian ini merupakan penelitian observasional cross sectional pada 100 siswa kejuruan dengan jurusan bidang teknik kendaraan ringan yang berasal dari SMKN 2 Depok, SMKN 1 Seyegan dan SMK Muhammadiyah Prambanan. Pengumpulan data menggunakan kuesioner karakteristik individu dan semi kuantitatif Food Frequency Questionnaire (SQ-FFQ). Status gizi ditentukan dengan indikator IMT/U dan prestasi belajar diukur dari nilai ujian praktik mata pelajaran kejuruan. Analisis data menggunakan uji chi-square. Hasil penelitian menunjukkan subjek memiliki asupan energi defisit (68%), protein defisit (40%), lemak defisit (57%), karbohidrat defisit (65%), vitamin C defisit (27%), zat besi defisit (59%), zink defisit (93%), status gizi normal (67%), dan kebiasaan sarapan jarang (35%). Tidak terdapat hubungan antara tingkat asupan energi dan zat gizi serta status gizi dengan prestasi belajar (p>0,05) tetapi ada hubungan signifikan antara kebiasaan sarapan (p=0,010) serta pekerjaan ayah dan ibu (p=0,030 dan p=0,031) dengan prestasi belajar. Disimpulkan bahwa kebiasaan sarapan merupakan faktor gizi yang berhubungan dengan prestasi belajar siswa SMK.

scholarly journals Development and Relative Validity of a Semiquantitative Food Frequency Questionnaire to Estimate Dietary Intake among a Multi-Ethnic Population in the Malaysian Cohort Project

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1163
Author(s):  
Suzana Shahar ◽  
Mohd Razif Shahril ◽  
Noraidatulakma Abdullah ◽  
Boekhtiar Borhanuddin ◽  
Mohd Arman Kamaruddin ◽  
...  
Keyword(s):  
Vitamin C ◽  
Correlation Coefficient ◽  
Food Frequency Questionnaire ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Dietary Intakes ◽  
Food Frequency ◽  
Relative Validity ◽  
Spearman’S Correlation

Measuring dietary intakes in a multi-ethnic and multicultural setting, such as Malaysia, remains a challenge due to its diversity. This study aims to develop and evaluate the relative validity of an interviewer-administered food frequency questionnaire (FFQ) in assessing the habitual dietary exposure of The Malaysian Cohort (TMC) participants. We developed a nutrient database (with 203 items) based on various food consumption tables, and 803 participants were involved in this study. The output of the FFQ was then validated against three-day 24-h dietary recalls (n = 64). We assessed the relative validity and its agreement using various methods, such as Spearman’s correlation, weighed Kappa, intraclass correlation coefficient (ICC), and Bland–Altman analysis. Spearman’s correlation coefficient ranged from 0.24 (vitamin C) to 0.46 (carbohydrate), and almost all nutrients had correlation coefficients above 0.3, except for vitamin C and sodium. Intraclass correlation coefficients ranged from −0.01 (calcium) to 0.59 (carbohydrates), and weighted Kappa exceeded 0.4 for 50% of nutrients. In short, TMC’s FFQ appears to have good relative validity for the assessment of nutrient intake among its participants, as compared to the three-day 24-h dietary recalls. However, estimates for iron, vitamin A, and vitamin C should be interpreted with caution.

scholarly journals Development and validation of a food frequency questionnaire for Japanese athletes (FFQJA)

2021 ◽  
Vol 18 (1) ◽  
Author(s):  
Kazuko Ishikawa-Takata ◽  
Kaori Okamoto ◽  
Motoko Taguchi
Keyword(s):  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Kappa Statistic ◽  
Portion Size ◽  
Vitamin B ◽  
Kappa Index ◽  
Food Frequency ◽  
Supplement Use ◽  
Food Items ◽  
Dietary Records

Abstract Background Food frequency questionnaires are considered an effective method for assessing habitual dietary intake, but they must be developed or validated with the target population. Portion size, supplement use and food choice are thought to be especially important methodological considerations for assessing athletes’ dietary intake. This study aimed to develop and validate a food frequency questionnaire for Japanese athletes using data from this population. Methods We used dietary records from 440 Japanese athletes involved in our previous projects. Food items were analyzed using cumulative percentage contributions and multiple regression analysis, to give a selection of 62 basic food items and four supplemental items. The validity of the questionnaire was evaluated among another 77 Japanese athletes by comparing nutrient intakes assessed using the questionnaire with dietary records. Reproducibility was evaluated by comparing a second questionnaire completed 2–3 weeks later by 36 of the athletes in the validation study. Validity was assessed using crude Spearman’s correlation coefficients (CCs), energy-adjusted CCs, intraclass CCs (ICCs), and Kappa index values. Reproducibility was assessed by CCs, energy-adjusted CCs, and ICCs. Results In the validation analysis, the median crude CC for all of the nutrients was 0.407, ranging from 0.222 for dietary fiber to 0.550 for carbohydrate. The median energy-adjusted CC was 0.478, and the median ICC was 0.369. When we divided the athletes into quartiles, 65% (vitamin B1) to 86% (iron) of athletes were classified into the same or adjacent categories using the questionnaire and dietary records, with a median Kappa statistic of 0.32. In the reproducibility analysis, the median crude CC between the two completed questionnaires was 0.654, ranging from 0.582 (carbohydrate) to 0.743 (vitamin B2). The median energy-adjusted CC was 0.643, and the median ICC was 0.647. Conclusions The new 62-item food frequency questionnaire is both reliable and valid and may be useful for assessing food intake in Japanese athletes.

Validation of the FRESH Austin Food Frequency Questionnaire Using Multiple 24-hour Dietary Recalls

2021 ◽  
pp. 1-26
Author(s):  
CES Jovanovic ◽  
J Whitefield ◽  
DM Hoelscher ◽  
B Chen ◽  
N Ranjit ◽  
...  
Keyword(s):  
Low Income ◽  
Food Frequency Questionnaire ◽  
Fruits And Vegetables ◽  
Health Clinic ◽  
Local Health ◽  
Food Frequency ◽  
Intervention Area ◽  
Valid Instrument ◽  
Local Health Center ◽  
Community Health Clinic

Abstract Objective: The purpose of this study was to examine the validity of a Food Frequency Questionnaire (FFQ) utilized in the Food Retail: Evaluating Strategies for a Healthy Austin (FRESH Austin) study, designed to evaluate changes in the consumption of fruits and vegetables (FV) in diverse low-income communities in Austin, TX. Design: The FRESH Austin FFQ was validated against three 24-hour dietary recalls (24hDRs). All dietary assessments were administered (in-person or by telephone) by trained investigators. Setting: Recruitment was conducted at sites within the geographic areas targeted in the FRESH Austin recruitment. People at a community health clinic, a local health center, and a YMCA within the intervention area were approached by trained and certified data collectors, and invited to participate. Participants: Among n=56 participants, 83% were female, 46% were non-White, 24% had income < $25K/year, and 30% spoke only/mostly Spanish at home. Results: The FFQ and average of three 24hDRs produce similar estimates of average total servings per day across FV (6.68 and 6.40 servings per day, respectively.) Correlations produced measures from 0.01 for “Potatoes” and 0.59 for “Other Vegetables”. Mean Absolute Percentage Errors (MAPE) values were small for all FV, suggesting the variance of the error estimates were also small. Bland-Altman plots indicate acceptable levels of agreement between the two methods. Conclusion: These outcomes indicate that the FRESH FFQ is a valid instrument for assessing FV consumption. The validation of the FRESH Austin FFQ provides important insights for evaluating community-based efforts to increase FV consumption in diverse populations.

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