scholarly journals A Food Frequency Questionnaire for Hemodialysis Patients in Bangladesh (BDHD-FFQ): Development and Validation

Nutrients ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 4521
Author(s):  
Shakil Ahmed ◽  
Tanjina Rahman ◽  
Md Sajjadul Haque Ripon ◽  
Harun-Ur Rashid ◽  
Tasnuva Kashem ◽  
...  
Keyword(s):  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Statistical Tests ◽  
Weighted Kappa ◽  
Serum Biomarkers ◽  
Kappa Statistics ◽  
Altman Analysis ◽  
Food Frequency ◽  
Relative Validity ◽  
Bland Altman Analysis

Diet is a recognized risk factor and cornerstone for chronic kidney disease (CKD) management; however, a tool to assess dietary intake among Bangladeshi dialysis patients is scarce. This study aims to validate a prototype Bangladeshi Hemodialysis Food Frequency Questionnaire (BDHD-FFQ) against 3-day dietary recall (3DDR) and corresponding serum biomarkers. Nutrients of interest were energy, macronutrients, potassium, phosphate, iron, sodium and calcium. The BDHD-FFQ, comprising 132 food items, was developed from 606 24-h recalls and had undergone face and content validation. Comprehensive facets of relative validity were ascertained using six statistical tests (correlation coefficient, percent difference, paired t-test, cross-quartiles classification, weighted kappa, and Bland-Altman analysis). Overall, the BDHD-FFQ showed acceptable to good correlations (p < 0.05) with 3DDR for the concerned nutrients in unadjusted and energy-adjusted models, but this correlation was diminished when adjusted for other covariates (age, gender, and BMI). Phosphate and potassium intake, estimated by the BDHD-FFQ, also correlated well with the corresponding serum biomarkers (p < 0.01) when compared to 3DDR (p > 0.05). Cross-quartile classification indicated that <10% of patients were incorrectly classified. Weighted kappa statistics showed agreement with all but iron. Bland-Altman analysis showed positive mean differences were observed for all nutrients when compared to 3DDR, whilst energy, carbohydrates, fat, iron, sodium, and potassium had percentage data points within the limit of agreement (mean ± 1.96 SD), above 95%. In summary, the BDHD-FFQ demonstrated an acceptable relative validity for most of the nutrients as four out of the six statistical tests fulfilled the cut-off standard in assessing dietary intake of CKD patients in Bangladesh.

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.

A Belgian study on the reliability and relative validity of the Health Behaviour in School-Aged Children food-frequency questionnaire

2003 ◽  
Vol 6 (6) ◽  
pp. 581-588 ◽  
Author(s):  
Carine A Vereecken ◽  
Lea Maes
Keyword(s):  
Health Behaviour ◽  
Food Frequency Questionnaire ◽  
Weighted Kappa ◽  
Study Data ◽  
Soft Drinks ◽  
Food Diary ◽  
Food Frequency ◽  
Relative Validity ◽  
School Aged Children ◽  
Food Items

AbstractObjective:In the Health Behaviour in School-Aged Children (HBSC) survey, the frequency of consumption of a limited number of food items – focusing on fibre, calcium and less healthy items – is queried using a 15-item food-frequency questionnaire (FFQ). The present study was conducted to assess the reliability and relative validity of the HBSC FFQ among school pupils in Belgium.Design and subjects:To assess the reliability of the FFQ, 207 pupils aged 11–12 years and 560 pupils aged 13–14 years completed the questionnaire twice, with a test–retest interval of 6 to 15 days. To assess the relative validity of the FFQ, in a first study data were collected as part of the Flemish HBSC 2000 survey: 7072 pupils (11–18 years) completed the FFQ and a 24-hour food behaviour checklist (FBC). In a second study, 101 pupils (11–12 years) completed the FFQ and a 7-day food diary (FD).Results:Reliability – weighted kappa values between test and retest ranged from 0.43 to 0.70, percentage agreement from 37 to 87%, and Spearman correlations from 0.52 to 0.82. Relative validity – comparison of the FBC with the percentage of respondents who should have consumed the food items on a random day, computed from the FFQ, showed good agreement between the FFQ and the FBC for most items. Only for cereals, diet soft drinks and other milk products were considerably higher food frequencies than expected found from the FBC. Comparison of the FFQ with the FD showed overestimation for all but three food items (cheese, soft drinks and chips). Spearman correlations ranged between 0.10 for crisps and 0.65 for semi-skimmed milk.Conclusion:The HBSC FFQ is a reliable questionnaire that can be used for ranking subjects for most food items, although one must consider the overestimation when the FFQ is used for estimating prevalences.

scholarly journals Assessing the relative validity of the Scottish Collaborative Group FFQ for measuring dietary intake in adults

2016 ◽  
Vol 20 (3) ◽  
pp. 449-455 ◽  
Author(s):  
Jenna L Hollis ◽  
Leone CA Craig ◽  
Stephen Whybrow ◽  
Heather Clark ◽  
Janet AM Kyle ◽  
...  
Keyword(s):  
Validation Study ◽  
Large Scale ◽  
Weighted Kappa ◽  
Collaborative Group ◽  
Altman Analysis ◽  
Food Diary ◽  
Cross Sectional ◽  
Relative Validity ◽  
Bland Altman Analysis ◽  
Spearman’S Correlation

AbstractObjectiveTo assess the relative validity of the latest version of the Scottish Collaborative Group (SCG) FFQ (version 6.6) in adults living in Scotland.DesignA cross-sectional validation study. Participants completed the self-administered, 169-item SCG FFQ followed by a 7 d, non-weighed food diary. Energy and energy-adjusted macronutrients and micronutrients were examined for relative validity through Spearman’s correlation, the percentage of classification into thirds of intake, Cohen’s weighted kappa (κw) and Bland–Altman analysis.SettingGeneral population living in Scotland.SubjectsNinety-six adults aged 18–65 years.ResultsSpearman’s correlation coefficients ranged from 0·21 (retinol) to 0·71 (Mg). A median of 52 % of adults were correctly classified into thirds of intake (range: 42 % (PUFA, MUFA and Fe) to 64 % (percentage energy from carbohydrates)) and 8 % were grossly misclassified into opposite thirds of intake (range: 3 % (carbohydrates, percentage energy from carbohydrates) to 19 % (thiamin)). Values of κw ranged between 0·20 (PUFA, β-carotene) to 0·55 (percentage energy from carbohydrates). In the Bland–Altman analysis, the smallest limits of agreement, when expressed as a percentage of the mean intake from the FFQ and food diary, were seen for the main macronutrients carbohydrates, fat and protein.ConclusionsAs in the previous validation study more than 10 years ago, the FFQ gave higher estimates of energy and most nutrients than the food diary, but after adjustment for energy intake the FFQ could be used in place of non-weighed food diaries for most macronutrients and many micronutrients in large-scale epidemiological studies.

scholarly journals Reproducibility and relative validity of a food frequency questionnaire to assess dietary intake of adults living in a Mediterranean country

PLoS ONE ◽  
2019 ◽  
Vol 14 (6) ◽  
pp. e0218541 ◽  
Author(s):  
Carla Aoun ◽  
Reine Bou Daher ◽  
Nada El Osta ◽  
Tatiana Papazian ◽  
Lydia Rabbaa Khabbaz
Keyword(s):  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Mediterranean Country ◽  
Food Frequency ◽  
Relative Validity

scholarly journals Improvement in dietary intake estimates through the combined use of different approaches

2019 ◽  
Vol 32 ◽  
Author(s):  
Raíssa do Vale Cardoso LOPES ◽  
Juliana Araújo TEIXEIRA ◽  
Dirce Maria MARCHIONI ◽  
Luisa Lina VILLA ◽  
Anna Regina GIULIANO ◽  
...  
Keyword(s):  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Correlation Coefficients ◽  
Reference Method ◽  
Weighted Kappa ◽  
Target Population ◽  
Dietary Intakes ◽  
Food Frequency ◽  
24 Hour Recall ◽  
Calibration Equations

ABSTRACT Objective This study aimed to compare dietary intake estimates using two different methodological approaches: use of new portions obtained with the 24-Hour Diet Recall, which was applied in the current study population, and the application of calibration equations, which were estimated using the same 24h-recalls. Methods Calibration equations were estimated using linear regression. The medians and confidence intervals of energy and nutrient intakes were assessed using all the approaches. The U Mann Whitney test was applied to verify differences among dietary intakes obtained with the 24 Hour Recall and Food Frequency Questionnaire-based methods. The correlation between different measures was assessed with Spearman coefficient. Weighted Kappa was used to verify the capability of the Food Frequency Questionnaire -based methods to classify individuals in the same intake levels of the 24 Hour Recall. Results Nine of the eleven components that were analyzed using the Food Frequency Questionnaire with standard portions and calibrated had medians significantly different from those obtained using the 24 Hour Recall; only the measurements of vitamin E and energy were statistically equal. For the Food Frequency Questionnaire with 24 Hour Recall portions, only the medians of vitamin D and B12 did not significantly differ from the 24 Hour Recall medians. Finally, for the Food Frequency Questionnaire with 24 Hour Recall portions and calibrated, all components, except folate and iron, had medians statistically equal to those obtained using the 24 Hour Recall. Spearman correlation coefficients were higher for the Food Frequency Questionnaire with 24 Hour Recall portions calibrated for all the assessed components, and the values ranged from 0.27 (total fat) to 0.57 (iron). Higher Kappa correlation coefficients were found for the Food Frequency Questionnaire 24 Hour Recall portions calibrated. Conclusion Calibrated FFQ with portions estimated from the own target population obtained better estimates of dietary intake, with values considerably more similar to those obtained with the reference method.

A Raw Food Based Quantitative Food Frequency Questionnaire to Assess Long-Term Dietary-Intake among Urban Adults of South India: Relative Validity and Reproducibility

2018 ◽  
Vol 55 (1) ◽  
pp. 1
Author(s):  
Sarin S. Jose ◽  
T. Shalini ◽  
N. Balakrishna ◽  
M.S. Radhika ◽  
G.N.V Brahmam ◽  
...  
Keyword(s):  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
South India ◽  
Large Population ◽  
Correlation Coefficients ◽  
Food Frequency ◽  
Relative Validity ◽  
Urban Adults ◽  
One Year

Food Frequency Questionnaire (FFQ) is a commonly used tool for the measurement of food intake of a large population. However, FFQ could be influenced by the cultures, seasons and food habits. Thus FFQ should be validated against a known or standard tool like a multiple 24-hour dietary recalls (24h) and also needs to be tested for its reproducibility. Hence, in this study, the reproducibility of a Raw food based quantitative FFQ (RFFQ) was assessed and validated against the standard multiple 24h method. A community-based longitudinal study was conducted among 106 urban adult subjects in Hyderabad Metropolitan city of South India. The reproducibility of RFFQ was assessed at two reference periods of a year and seasonal variation was investigated across three seasons. Further, RFFQ was validated against 24h across three seasons of the year. The median and Inter Quartile Range (IQR) of food and nutrient intakes have shown that the RFFQ was comparable to 24h of four months duration and also between baseline and final RFFQs. No significant seasonal difference in food and nutrient intake was observed by the RFFQs (p&gt;0.05). Bland-Altman analysis showed an agreement between the RFFQ and 24h indicating relative validity of the RFFQ in the study population. The reproducibility of the RFFQs was found to be good as observed by Intra class Correlation Coefficients (ICC). The RFFQ of one year duration is thus a valid tool to elicit long-term habitual dietary intake pattern of urban adult subjects in South India. As the RFFQ used in this study is raw food based it could be adopted to other parts of the country.

Relative validity and repeatability of a Zinc-FFQ for estimating intakes of Iron, Copper and selenium in Saudi adults

2020 ◽  
Vol 16 ◽  
Author(s):  
Alsufiani Hadeil M ◽  
Albar Salwa A ◽  
Al-shehri Aishah D ◽  
Al-Mufti Zain A ◽  
Aldhahri Rahaf S ◽  
...  
Keyword(s):  
Deficiency Anemia ◽  
Altman Analysis ◽  
Food Record ◽  
Food Frequency ◽  
Relative Validity ◽  
Bland Altman Analysis ◽  
Iron Copper ◽  
The Mean ◽  
The Difference ◽  
Highly Correlated

Background: In Saudi Arabia, few studies have addressed iron, selenium and copper intake and status. Most studies of iron have focused on iron deficiency anemia rather than the intake of iron. Objective: To assess the relative validity and repeatability of a Zinc-Food Frequency Questionnaire (FFQ) for estimating the intakes of iron, copper and selenium in Saudi adults. Method: Ninety-seven Saudi adults were participated in this study. All participants completed the FFQ1 and a three-days (3d) Food Record (FR) to assess validity. After one month, the FFQ was administered again (FFQ2) to assess the repeatability. Results: Mean intakes of iron, copper and selenium estimated by FFQ1 were significantly higher than those from the 3d FR. Estimated intakes of iron and selenium by both methods were significantly correlated. The Bland-Altman analysis showed that the difference in iron intakes, as measured by the two methods, was similar across the range of intakes while the difference in copper and selenium intakes increased with an increase in the mean intake. No detectable differences were observed between FFQ1 and FFQ2 in estimating iron, copper and selenium intakes. For all nutrients, the intakes from both FFQs were highly correlated. Conclusion: The Zinc-FFQ showed reasonable relative validity and repeatability for estimating other micronutrients, such as iron, copper and selenium.

scholarly journals Relative validity of the food frequency questionnaire used to assess dietary intake in the Leiden Longevity Study

2013 ◽  
Vol 12 (1) ◽  
Author(s):  
Martinette T Streppel ◽  
Jeanne HM de Vries ◽  
Saskia Meijboom ◽  
Marian Beekman ◽  
Anton JM de Craen ◽  
...  
Keyword(s):  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Food Frequency ◽  
Relative Validity

scholarly journals Relative Validity and Reproducibility of a Quantitative Food Frequency Questionnaire for Adolescents with Type 1 Diabetes: Validity of a Food Frequency Questionnaire

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Rosana de Moraes Borges Marques ◽  
Amanda Cristine de Oliveira ◽  
Sheylle Almeida da Silva Teles ◽  
Maria Luiza Ferreira Stringuini ◽  
Nélida Shimid Fornés ◽  
...  
Keyword(s):  
Type 1 Diabetes ◽  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Pearson Correlation ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Food Frequency ◽  
Relative Validity ◽  
Intraclass Correlation Coefficients

Background.Food frequency questionnaires are used to assess dietary intake in epidemiological studies.Objective.The aim of the study was to assess the relative validity and reproducibility of a quantitative food frequency questionnaire (QFFQ) for adolescents with type 1 diabetes. Methods: Validity was evaluated by comparing the data generated by QFFQs to those of 24-hour recalls (24 hrs). QFFQs were applied twice per patient to assess reproducibility. Statistical analysis included performingt-tests, obtaining Pearson correlation coefficients when necessary, correcting measurements for randomness by the weightedkappamethod, calculating intraclass correlation coefficients, and generating Bland-Altman plots (P<0,05).Results.The total energy and nutrient intake as estimated by the QFFQs were significantly higher than those from 24 hrs. Pearson correlation coefficients for energy-adjusted, deattenuated data ranged from 0.32 (protein) to 0.75 (lipid, unsaturated fat and calcium). Weightedkappavalues ranged from 0.15 (vitamin C) to 0.45 (calcium). Bland-Altman plots indicated acceptable validity. As for reproducibility, intraclass correlation coefficients ranged from 0.24 (calcium) to 0.65 (lipid), and the Bland-Altman plots showed good agreement between the two questionnaires. Conclusion: The QFFQ presented an acceptable ability to classify correctly and with good reproducibility, adolescents with type 1 diabetes according to their levels of dietary intake.

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