scholarly journals Development and Validation of a Data-Based Food Frequency Questionnaire for Adults in Eastern Rural Area of Rwanda

2016 ◽  
Vol 9 ◽  
pp. NMI.S38374 ◽  
Author(s):  
Ayumi Yanagisawa ◽  
Noriko Sudo ◽  
Yukiko Amitani ◽  
Yuko Caballero ◽  
Makiko Sekiyama ◽  
...  
Keyword(s):  
Vitamin A ◽  
Rural Area ◽  
Food Frequency Questionnaire ◽  
Correlation Coefficients ◽  
Nutrient Intakes ◽  
Food Frequency ◽  
Food Records ◽  
Percent Contribution ◽  
Cross Classification ◽  
Development And Validation

This study aimed to develop and evaluate the validity of a food frequency questionnaire (FFQ) for rural Rwandans. Since our FFQ was developed to assess malnutrition, it measured energy, protein, vitamin A, and iron intakes only. We collected 260 weighed food records (WFRs) from a total of 162 Rwandans. Based on the WFR data, we developed a tentative FFQ and examined the food list by percent contribution to energy and nutrient intakes. To assess the validity, nutrient intakes estimated from the FFQ were compared with those calculated from three-day WFRs by correlation coefficient and cross-classification for 17 adults. Cumulative contributions of the 18-item FFQ to the total intakes of energy and nutrients reached nearly 100%. Crude and energy-adjusted correlation coefficients ranged from -0.09 (vitamin A) to 0.58 (protein) and from -0.19 (vitamin A) to 0.68 (iron), respectively. About 50%-60% of the participants were classified into the same tertile. Our FFQ provided acceptable validity for energy and iron intakes and could rank Rwandan adults in eastern rural area correctly according to their energy and iron intakes.

Development and Validation of a Food Frequency Questionnaire

2005 ◽  
Vol 66 (2) ◽  
pp. 67-75 ◽  
Author(s):  
Bryna Shatenstein ◽  
Sylvie Nadon ◽  
Catherine Godin ◽  
Guylaine Ferland
Keyword(s):  
Food Frequency Questionnaire ◽  
Saturated Fatty Acids ◽  
Target Population ◽  
Total Sample ◽  
Health Habits ◽  
Food Frequency ◽  
French And English ◽  
Valid Instrument ◽  
Cross Classification ◽  
Development And Validation

Regular diet monitoring requires a tool validated in the target population. A 73-item, semiquantitative, self-administered food frequency questionnaire (FFQ), was adapted in French and English from the Block National Cancer Institute Health Habits and History Questionnaire. The FFQ was used to capture usual long-term food consumption among adults living in Quebec. A representative sample of adults aged 18 to 82 (57% female) was recruited by random digit dialling in the Montreal region. Approximately 64% of recruits completed and returned the instrument by mail (n=248). The FFQ was validated in a subsample (n=94, 61% female) using four nonconsecutive food records (FRs). Median energy intakes (in kcal) for men and women, respectively, were FFQ (total sample) 2,112 and 1,823, FFQ (subsample) 2,137 and 1,752, and FR (subsample) 2,510 and 1,830. Spearman correlation analyses between FFQ and FR nutrients were positive (with r ranging from 0.32 for folate to 0.58 for saturated fatty acids) and statistically significant (p<0.001), with better results among women. On average, cross-classification of energy and 24 nutrients from the FFQ and means of four FRs placed 39% into identical quartiles and 78% into identical and contiguous quartiles, with only 4% frankly misclassified. These results suggest that the FFQ is a relatively valid instrument for determining usual diet in Quebec adults.

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 Validation of a semi-quantitative food-frequency questionnaire for use among adults in Guatemala

2002 ◽  
Vol 5 (5) ◽  
pp. 691-698 ◽  
Author(s):  
Monica M Rodríguez ◽  
Humberto Méndez ◽  
Benjamín Torún ◽  
Dirk Schroeder ◽  
Aryeh D Stein
Keyword(s):  
Vitamin C ◽  
Food Frequency Questionnaire ◽  
Pearson Correlation ◽  
Correlation Coefficients ◽  
Individual Variability ◽  
Food Frequency ◽  
Micronutrient Intake ◽  
Study Population ◽  
Cross Classification

AbstractObjective:The purpose of the study was to assess the validity of a 52-item semiquantitative food-frequency questionnaire (FFQ) by comparing it with multiple 24-hour dietary recalls.Design:Three non-consecutive 24-hour dietary recalls and one FFQ were administered over a one-month period.Setting:Four communities of El Progreso, Guatemala.Subjects:Seventy-three individuals aged 22–55 years.Results:Intakes of energy and other nutrients as measured by the FFQ were higher than intakes measured by 24-hour recalls. Energy was overestimated by 361 kcal, and nutrient overestimates were particularly great for vitamin C and iron. Pearson correlation coefficients for crude energy and nutrients intakes ranged from 0.64 for energy to 0.12 for vitamin C. Exact agreement for both methods (measured by the concordance correlation coefficient) ranged from 0.59 (fat) to 0.06 (vitamin C). Pearson correlation coefficients for energy-adjusted nutrients ranged from 0.59 (carbohydrates) to 0.11 (thiamin). Pearson correlation coefficients for the proportion of total energy derived from specific foods ranged from 0.59 (tortillas) to 0.01 (sugared beverages). Cross-classification of quartiles of crude nutrient intakes for both methods indicated that <11% were grossly misclassified; after adjusting for energy intake, <13% were grossly misclassified.Conclusions:This FFQ provides good measures of energy and macronutrient intakes and a reasonably reliable measure of micronutrient intake, indicating its suitability for comparing exposures within a study population in reference to heath-related endpoints. Our results highlight the need to adapt any FFQ to specific cultural needs – in this case, the Guatemalan ‘core foods’ (tortilla, bread and beans), for which inter-individual variability in intake is high.

scholarly journals Validation of a semi-quantitative FFQ using food records as a reference in older women in the Kuopio Fracture Prevention Study (OSTPRE-FPS)

2011 ◽  
Vol 15 (4) ◽  
pp. 635-639 ◽  
Author(s):  
Arja T Erkkilä ◽  
Ritva Järvinen ◽  
Henna Karvonen ◽  
Linda Keronen ◽  
Marjo T Tuppurainen
Keyword(s):  
Vitamin D ◽  
Folic Acid ◽  
Elderly Women ◽  
Correlation Coefficients ◽  
Fracture Prevention ◽  
Prevention Study ◽  
Nutrient Intakes ◽  
Food Records ◽  
Cross Classification

AbstractObjectiveTo validate an eighty-nine-item semi-quantitative FFQ for measurement of nutrient intakes in elderly women.DesignFFQ and 3 d food records were filled in by women participating in the Kuopio Fracture Prevention Study (OSTPRE-FPS). Data on intakes of energy, fat, protein, carbohydrate, fibre, Ca, Fe, P, K, Mg, folic acid, vitamin B12, vitamin C, vitamin D and vitamin K from ninety-nine women were available to assess the agreement of the two methods. Validity was assessed using correlation coefficients, cross-classification into quintile categories and Bland–Altman plots. Nutrients relevant to bone health were assessed.SettingOSTPRE-FPS in Finland.SubjectsElderly women with a mean age 71·3 years.ResultsThe FFQ overestimated energy and nutrient intakes as compared with food records by 30–50 %. The highest correlation coefficients of the energy-adjusted nutrient intakes between the methods were observed for fibre (0·60), Mg (0·56) and folic acid (0·49) and the lowest for protein and vitamin D (both 0·19). The cross-classification of energy-adjusted nutrient intakes showed that on average 68 % of the participants (range 62–78 %) were classified into the same or an adjacent quintile category.ConclusionsThe validity of energy and nutrient intakes measured with the FFQ was moderate as compared with 3 d food records in elderly women. The FFQ is a useful tool for the nutrient assessment of elderly women in epidemiological research.

scholarly journals What do babies eat? Evaluation of a food frequency questionnaire to assess the diets of infants aged 6 months

2008 ◽  
Vol 11 (7) ◽  
pp. 751-756 ◽  
Author(s):  
LD Marriott ◽  
SM Robinson ◽  
J Poole ◽  
SE Borland ◽  
KM Godfrey ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Rank Correlation ◽  
Correlation Coefficients ◽  
Population Based ◽  
Spearman Rank Correlation ◽  
Nutrient Intakes ◽  
Food Frequency ◽  
Spearman Rank ◽  
Healthy Infants ◽  
Mean Differences

AbstractObjectiveTo evaluate the relative validity of a food frequency questionnaire (FFQ) for assessing nutrient intakes in 6-month-old infants.Design and settingThe FFQ was developed to assess the diets of infants born to women in the Southampton Women’s Survey (SWS), a population-based survey of young women and their offspring. The energy and nutrient intakes obtained from an interviewer-administered FFQ were compared with those obtained from a 4-day weighed diary.Subjects and methodsA sub-sample of 50 infants aged 6 months from the SWS had their diets assessed by both methods. The FFQ recorded the frequencies and amounts of milks, baby foods, regular foods and drinks consumed by the infants over the previous seven days. The diaries recorded the weights of all foods and drinks consumed by the infants on four separate days within 15 days following FFQ completion.ResultsSpearman rank correlation coefficients for intakes of energy, macronutrients and 18 micronutrients, determined by the two methods, ranged from r = 0·39 to 0·86; adjustment for energy intake tended to increase the correlation coefficients, range ra = 0·55 to 0·89. Bland–Altman statistics showed that mean differences between methods were in the range of −12·5 % to +12·5 % except for vitamin B12 (−18·9 %).ConclusionAlthough there were differences in absolute energy and nutrient intakes between methods, Spearman rank correlation coefficients indicated reasonable agreement in the ranking of intakes. The interviewer-administered FFQ is a useful tool for assessing energy and nutrient intakes of healthy infants aged about 6 months.

scholarly journals Reproducibility and validity of a quantitative food-frequency questionnaire among Jamaicans of African origin

2001 ◽  
Vol 4 (5) ◽  
pp. 971-980 ◽  
Author(s):  
M Jackson ◽  
S Walker ◽  
J Cade ◽  
T Forrester ◽  
JK Cruickshank ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Correlation Coefficients ◽  
Reference Method ◽  
Beta Carotene ◽  
Moderate Activity ◽  
Activity Levels ◽  
African Origin ◽  
Food Frequency ◽  
Cross Classification

AbstractBackground:An interviewer-administered quantitative food-frequency questionnaire (FFQ) was developed to determine the energy and nutrient intakes of adult Jamaicans of African origin as part of a study of the epidemiology of diabetes and hypertension.Methods:Reproducibility of the questionnaire was investigated in 123 participants aged 25–74 years. The relative validity of the FFQ was assessed against twelve 24-hour recalls administered over 12 months in 73 of the participants. In addition, energy intakes (EI) were compared with estimated basal metabolic rates (BMR).Results:Reproducibility correlation coefficients (Pearson and intraclass) varied between 0.42 for retinol and 0.71 for carbohydrate, with most values falling between 0.50 and 0.60. When compared with repeated 24-hour recalls, the FFQ estimated slightly higher energy (mean 6%) and macronutrient intakes (mean 2–14%), and was within 5% when expressed as a percentage of energy intake. Micronutrients were higher by 1.19 (calcium) to 1.61 times (vitamin C). Unadjusted correlations between the FFQ and the reference method ranged from 0.20 for beta-carotene to 0.86 for alcohol. Cross-classification of nutrients into quartiles showed that 46–48% of participants in the lowest and highest quartiles were jointly classified by both methods. Misclassifications were low for most nutrients with one or two persons misclassified at the extreme quartiles. EI/BMR ratios suggested light to moderate activity levels appropriate for an urban population in a developing country.Conclusions:The FFQ showed reasonable reproducibility and validity and is suitable for estimating the habitual intakes of energy and macronutrients, but was poor for some micronutrients (retinol and beta-carotene).

scholarly journals Development and testing of a quantitative food frequency questionnaire for use in Gujarat, India

1999 ◽  
Vol 2 (1) ◽  
pp. 39-50 ◽  
Author(s):  
James R Hebert ◽  
Prakash C Gupta ◽  
Ramesh B Bhonsle ◽  
Pesi N Sinor ◽  
Hemali Mehta ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Correlation Coefficients ◽  
North India ◽  
Regression Analyses ◽  
Nutrient Intakes ◽  
Food Frequency ◽  
Rural Villages ◽  
Northern India ◽  
Health Related ◽  
Study Population

AbstractObjective:To develop and test a quantitative, interviewer-administered food frequency questionnaire (FFQ) to ascertain nutrient intakes of individuals in northern India.Design:A 92-item FFQ was developed based on food use and market surveys of the study area. A validation study was conducted consisting of 24-h diet recalls (24HR) administered on 6 randomly selected days over 1 year. Two FFQs were administered, one each at the beginning and end of the 1-year period. FFQ and 24HR-derived nutrient scores were compared using correlation and regression analyses and by computing differences between nutrient intakes estimated by the two methods.Setting:Rural villages in Bhavnagar District, Gujarat, North India.Subjects:60 individuals who agreed to provide all necessary data.Results:Pearson (parametric) correlation coefficients averaged 0.69 in comparing nutrient scores derived from the 24HR with those from the first FFQ and 0.72 in comparing the second FFQ (P < 0.0001). Spearman correlation coefficients were virtually identical to the Pearson correlations, averaging 0.68 and 0.72, respectively. In regression analyses, most coefficients were close to 1.0 (perfect linear association). Nutrient scores were significantly and consistently higher on both FFQs relative to the 24HR.Conclusions:This FFQ produces results broadly comparable, and superior in some respects, to those commonly used in the West. Higher than average measures of association indicate its suitability for comparing exposures within this study population in reference to health-related endpoints.

scholarly journals Reproducibility and validity of the EatWellQ8 web-based food frequency questionnaire against a paper-based food frequency questionnaire and a 4-day weighed food record (Preprint)

2019 ◽  
Author(s):  
Balqees Alawadhi ◽  
Rosalind Fallaize ◽  
Rodrigo Franco ◽  
Faustina Hwang ◽  
Julie Lovegrove
Keyword(s):  
Food Frequency Questionnaire ◽  
Nutrient Intake ◽  
Food Groups ◽  
Food Record ◽  
Nutrient Intakes ◽  
Web Based ◽  
Food Frequency ◽  
Moderate Agreement ◽  
Exact Agreement ◽  
Cross Classification

BACKGROUND The web-based EatWellQ8 food frequency questionnaire (FFQ) was developed as a dietary assessment tool for healthy adults in Kuwait. Validation against reliable instruments and an assessment of its reproducibility are required to ensure its accuracy in computing nutrient intake OBJECTIVE To assess the reproducibility and validity of the EatWellQ8 FFQ against a paper based (PFFQ) and a 4-day weighed food record (WFR). METHODS Reproducibility of the EatWellQ8 FFQ was assessed using test-retest methodology. Participants were required to complete the FFQ at two time points, 4 weeks apart. To assess validity of the EatWellQ8 FFQ, a subset of the participants were asked to complete a PFFQ or a 4-day WFR 1 week after administration of the EatWellQ8 FFQ. The level of agreement between nutrient and food group intakes estimated by repeated EatWellQ8 FFQ and the EatWellQ8 FFQ and the PFFQ and the 4-day WFR were evaluated using Bland-Altman methodology and classification into quartiles of daily intake. Crude unadjusted correlation coefficients were also calculated. RESULTS A total of 99 participants (65% female: 35% male) completed the study, 53 participated in the reproducibility study and the 4-day WFR validity study (mean age 37 years) and a further 46 participated in the PFFQ validity study (mean age 36 years). Crude unadjusted correlations for repeated EatWellQ8 FFQ ranged from (0.37-0.82) (P<0.01). Mean cross-classification into “exact agreement plus adjacent” was 88% for nutrient intakes, 86% for food groups, and Bland-Altman plots showed good agreement for energy-adjusted macronutrient intakes. Agreement between the EatWellQ8 FFQ and PFFQ varied, with crude unadjusted correlations ranging from (0.42-0.73) (P<0.05). Mean cross-classification into “exact agreement plus adjacent” was 84% for nutrient intake and 74% for food groups. Bland-Altman plots showed moderate agreement for both energy and energy-controlled nutrient intakes. Crude unadjusted correlations for the EatWellQ8 FFQ and the 4-day WFR ranged from (0.40-0.88) (P<0.01). Mean cross-classification into “exact agreement plus adjacent” was 85% for nutrient intake and 83% for food groups. Bland-Altman plots showed moderate agreement for energy-adjusted macronutrient intakes. CONCLUSIONS Results indicate that the web-based EatWellQ8 FFQ is reproducible for assessing nutrient and food group intake and has moderate agreement compared to a PFFQ and a 4-day WFR for measuring energy and nutrient intakes.

scholarly journals Validity and reproducibility of a semi-quantitative multiple-choice food frequency questionnaire in adults living in central Iran

2020 ◽  
Author(s):  
Alireza Zimorovat ◽  
Fatemeh Moghtaderi ◽  
Mojgan Amiri ◽  
Hamidreza Raeisi-Dehkordi ◽  
Matin Mohyadini ◽  
...  
Keyword(s):  
Vitamin A ◽  
Vitamin C ◽  
Food Frequency Questionnaire ◽  
Pearson Correlation ◽  
Multiple Choice ◽  
Correlation Coefficients ◽  
Central Iran ◽  
Food Frequency ◽  
Calcium Magnesium

Abstract Background: To the best of our knowledge, no study has tried to develop and validate a multiple-choice food-based FFQ in Iran using weighed dietary records.This study aimed to investigate the validity and reproducibility of a multiple-choice semi-quantitative food frequency questionnaire (SQ-FFQ) in adults living in central Iran.Methods: Participants attended a large long-term clinical trial were asked to complete three SQ-FFQs by interview, and nine 3-day weighed dietary records (WDRs), over nine months. They provided two blood samples to assess serum calcium, magnesium, zinc, and vitamin C levels. The Pearson and intraclass correlation coefficients (ICC) were calculated to assess reproducibility and validity. The degree of misclassification was explored by using a contingency table of quartiles which is compare the information between third FFQ and WDRs. The method of triads was incorporated to assess validity coefficients between estimated intakes using third FFQ, WDRs, and biochemical markers and assumed true intakes.Results: A total of 180 adults aged 48.9±8.4 years completed the study. Compared to WDRs, FFQs overestimated all nutrients intakes except for iron. The median Pearson correlation coefficient was 0.31, 0.44, and 0.38 for FFQ1-FFQ2, FFQ1-FFQ3 and FFQ2-FFQ3, respectively and ICC ranged from 0.43 (thiamin) to 0.73 (vitamin D, median: 0.56). The de-attenuated, age, sex, and education adjusted correlation coefficients ranged from 0.01 for vitamin A to 0.40 for vitamin B12 and -0.05 for vitamin A to 0.41 for manganese (median: 0.17 and 0.26) for FFQ1-WDR and FFQ3-WDR, respectively. The median exact agreement and complete disagreement between FFQ3 and WDRs were 33% and 6%, respectively. The FFQ3 validity coefficients for vitamin C, calcium, magnesium, and zinc were 0.13, 0.62, 0.89, and 0.66, respectively, using the triads method.Conclusions: The SQ-FFQ seems to be an acceptable tool to assess the long-term dietary intake for future large-scale studies in this population.

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