A Quantitative Food Frequency Questionnaire for Women in Southeast China: Development and Reproducibility

2005 ◽  
Vol 17 (1) ◽  
pp. 29-35 ◽  
Author(s):  
M. Zhang ◽  
CW Binns ◽  
AH Lee
Keyword(s):  
Food Frequency Questionnaire ◽  
Eating Habits ◽  
Chinese Women ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Food Group ◽  
Kappa Statistics ◽  
Food Frequency ◽  
Southeast China ◽  
Intraclass Correlation Coefficients

This study describes the development and reproducibility of a 128-item quantitative food frequency questionnaire (FFQ) to measure usual food consumption for women in southeast China. The FFQ was pre-tested using 51 Chinese women who recently migrated to Australia. Cronbach's alpha coefficient was 0.81 for internal consistency. The reliability of the FFQ was then assessed by another test-retest study. A sample of 41 women residing in southeast China was interviewed twice within 12 weeks. Intraclass correlation coefficients were moderate to high for mean food group consumption (0.43-0.96) and mean daily nutrient intakes (0.47-0.89). Kappa statistics for eating habits ranged from 0.27 to 0.89 in the test-retest. The mean ratio of energy intake to basal metabolic rate was 1.73 (S.D. 0.39) in both test and retest samples. The study confirmed that the FFQ method using standard containers is appropriate to assess dietary intake for women in southeast China. Asia Pac J Public Health 2005: 17(1): 29-35.

scholarly journals Online Food Frequency Questionnaire From the Cohort of Universities of Minas Gerais (CUME Project, Brazil): Construction, Validity, and Reproducibility

2021 ◽  
Vol 8 ◽  
Author(s):  
Heloísa Gambarelli de Araújo Azarias ◽  
José Luiz Marques-Rocha ◽  
Aline Elizabeth da Silva Miranda ◽  
Luana Caroline dos Santos ◽  
Ana Luíza Gomes Domingos ◽  
...  
Keyword(s):  
Food Consumption ◽  
Food Frequency Questionnaire ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Fats And Oils ◽  
Target Population ◽  
Epidemiological Studies ◽  
Minas Gerais ◽  
Food Frequency ◽  
Intraclass Correlation Coefficients

Background: The Food Frequency Questionnaire (FFQ) is usually used in epidemiological studies to assess food consumption. However, the FFQ must have good accuracy, requiring its validation and reproducibility for the target population. Thus, this study aimed to describe the construction of the online Food Frequency Questionnaire (oFFQ) used at the Cohort of Universities of Minas Gerais (CUME project, Brazil) and evaluate its validity and reproducibility.Methods: The oFFQ was answered two times in 1 year (March/August 2018—March/April 2019; n = 108 participants—reproducibility), and four 24-h dietary recalls (24hRs) were applied in two seasons of the southern hemisphere [two 24hRs in autumn (March/June 2018) and two 24hRs in winter (August/September 2018); n = 146 participants—validity]. To assess the validity and reproducibility, the intraclass correlation coefficients (ICCs) were estimated.Results: The oFFQ had 144 food items separated into eight groups (dairy products; meat and fish; cereals and legumes; fruits; vegetables; fats and oils; drinks; other foods). In assessing the validity, ICCs for energy and macronutrients were considered moderate, ranging from 0.41 (energy) to 0.59 (protein), while the ICCs for micronutrients were considered low to moderate, ranging from 0.25 (fibers) to 0.65 (vitamin B6). Regarding reproducibility assessment, ICCs for energy and all the assessed items were considered moderate to excellent, ranging from 0.60 (vegetables) to 0.91 (vitamin E and retinol).Conclusions: The self-reported oFFQ had satisfactory validity and reproducibility. So, it can be used to analyze the association between food consumption and chronic diseases in the participants of the Cohort of Universities of Minas Gerais (CUME project—Brazil).

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.

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 Validity and reproducibility of the food-frequency questionnaire used in the Shanghai Men's Health Study

2007 ◽  
Vol 97 (5) ◽  
pp. 993-1000 ◽  
Author(s):  
Raquel Villegas ◽  
Gong Yang ◽  
DaKe Liu ◽  
Yong-Bing Xiang ◽  
Hui Cai ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Correlation Coefficients ◽  
Food Group ◽  
Men’S Health ◽  
Health Study ◽  
Men's Health ◽  
Food Groups ◽  
Food Frequency ◽  
Exact Agreement ◽  
Usual Intake

We evaluated the validity and reproducibility of the FFQ used in the Shanghai Men's Health Study (SMHS). The study included 195 randomly selected participants of the SMHS who completed one FFQ at baseline, twelve 24-hour dietary recalls (24-HDR) (once a month for twelve consecutive months) and a second FFQ at the end of the study. The FFQ accounted for 88·78 % of the foods recorded in the 24-HDR surveys. The validity of the FFQ was evaluated by comparing nutrient and food group intake levels from the second FFQ and the multiple 24-HDR. Correlation coefficients ranged from 0·38 to 0·64 for macronutrients, 0·33 to 0·58 for micronutrients and 0·35 to 0·72 for food groups. Misclassification to opposite quartiles for nutrients and food groups was rare, ranging from 1·5 to 7·7 %, while exact agreement rates were between 31·8 and 53·3 %. The reliability of the FFQ was assessed by comparing the intake levels from the two FFQ. Correlation coefficients were 0·39 to 0·53 for macronutrients, 0·38 to 0·52 for micronutrients and 0·39 to 0·64 for food groups. Exact agreement rates for quartile distribution were between 31·8 and 49·2 %, while misclassification to opposite quartiles was between 1·5 and 6·2 %. These data indicate that the SMHS FFQ can reasonably categorise usual intake of nutrients and food groups among men living in urban Shanghai.

scholarly journals Reproducibility and Validity of a Food Frequency Questionnaire for Dietary Assessment in Adolescents in a Self-Reported Way

Nutrients ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 2081
Author(s):  
Leyre Notario-Barandiaran ◽  
Carmen Freire ◽  
Manuela García-de-la-Hera ◽  
Laura Mª Compañ-Gabucio ◽  
Laura Torres-Collado ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Vegetable Intake ◽  
Pearson Correlation ◽  
Dietary Assessment ◽  
Correlation Coefficients ◽  
Food Group ◽  
Birth Cohort Study ◽  
Food Groups ◽  
Food Frequency ◽  
Male Adolescents

Tools to assess diet in a reliable and efficient way are needed, particularly in children and adolescents. In this study, we assess the reproducibility and validity of a semiquantitative food frequency questionnaire (FFQ) among adolescents in Spain. We analyzed data of 51 male adolescents aged 15–17 years from a prospective birth cohort study. Participants answered the FFQ twice in a self-administered way over a 12-month period. Reproducibility was assessed by comparing nutrient and food intakes from the FFQs, and validity by comparing nutrient intakes from the average of two FFQs and the average of two 24-Hour Dietary Recalls obtained in the period. Pearson correlation coefficients were calculated. The average of reproducibility correlation coefficients for food group intakes was 0.33, with the highest correlation for vegetable intake (r = 0.81); and the average for nutrient intake was 0.32, with the highest coefficients for α- and β-carotene (r = 0.65). Validity correlation coefficients ranged from 0.07 for carbohydrates to 0.53 for dietary fiber. The average of the validity correlation coefficients was r = 0.32. This study suggests that our FFQ may be a useful tool for assessing dietary intake of most nutrient and food groups among Spanish male adolescents in a self-administered way, despite reproducibility and, particularly validity, being low for some nutrients and food groups.

scholarly journals Development and Validation of Food Frequency Questionnaire for Food and Nutrient Intake of Adults in Butajira, Southern Ethiopia

2020 ◽  
Author(s):  
Ilili Feyesa ◽  
Bilal S Endris ◽  
Esete Habtemariam ◽  
Hamid Y Hassen ◽  
Seifu H Gebreyesus
Keyword(s):  
Food Frequency Questionnaire ◽  
Vitamin B1 ◽  
Correlation Coefficients ◽  
Food Group ◽  
Rank Test ◽  
Southern Ethiopia ◽  
Food Groups ◽  
Food Frequency ◽  
Significant Difference ◽  
Total Fat

Abstract Background: To date, there is no culture-specific and validated Food Frequency Questionnaire (FFQ) available in Ethiopia. We developed a FFQ and evaluated its validity as compared to estimates of a food group and nutrient intakes derived from two 24-Hour Dietary Recalls (24-HRs).Method: The FFQ has a total of 89 food items. A total of 105 adults aged 20–65 years participated in this study. Wilcoxon- signed rank test, Spearman’s correlation, Cross-classification, kappa, and Bland-Altman analysis were used to validate food group intakes and nutrients derived from FFQ against two 24-HRs.Results: Mean energy and macronutrient intakes obtained from the FFQ were significantly higher than those obtained from the mean of two 24-HRs. For energy and macronutrients, the correlation between two instruments ranged from 0.05 (total fat) to 0.32 (carbohydrate). Whereas, for micronutrients it ranged from 0.1 (calcium) to 0.49 (vitamin B1). Visual inspection of the Bland-Altman plots for both energy and macronutrients shows no consistent trend across the intake values. For the majority of the food groups, no significant difference was observed in median intake of foods and nutrients between 24-HRs and FFQ. Correlation coefficients for food groups ranged from 0.12 (egg) to 0.78 (legumes). The FFQ showed a fair classification agreement with the 24-HRs for cereals, legumes, and roots and tubers intakes. A systematic trend of overestimation for roots and tubers and under estimation of beverage intakes at higher values was observed when we used FFQ.Conclusion: The FFQ is valid to assess and rank individuals in terms of intakes of most food groups according to high and low intake categories. However, estimates of roots and tuber and beverages should be interpreted with caution.

scholarly journals Reproducibility and validity of food group intake in a short food frequency questionnaire for the middle-aged Japanese population

2021 ◽  
Vol 26 (1) ◽  
Author(s):  
Nahomi Imaeda ◽  
Chiho Goto ◽  
Tae Sasakabe ◽  
Haruo Mikami ◽  
Isao Oze ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Rank Correlation ◽  
Correlation Coefficients ◽  
Food Group ◽  
Food Groups ◽  
Middle Aged ◽  
Food Frequency ◽  
Spearman’S Rank Correlation ◽  
Dietary Records ◽  
Z Scores

Abstract Purpose The purpose of this study was to evaluate the reproducibility and validity of a short food frequency questionnaire (FFQ) for food group intake in Japan, the reproducibility and partial validity of which were previously confirmed for nutrients. Methods A total of 288 middle-aged healthy volunteers from 11 different areas of Japan provided nonconsecutive 3-day weighed dietary records (DRs) at 3-month intervals over four seasons. We evaluated reproducibility based on the first (FFQ1) and second (FFQ2) questionnaires and their validity against the DRs by comparing the intake of 20 food groups. Spearman’s rank correlation coefficients (SRs) were calculated between energy-adjusted intake from the FFQs and that from the DRs. Results The intake of 20 food groups estimated from the two FFQs was mostly equivalent. The median energy-adjusted SRs between the FFQ1 and FFQ2 were 0.61 (range 0.38–0.86) for men and 0.66 (0.45–0.84) for women. For validity, the median de-attenuated SRs between DRs and the FFQ1 were 0.51 (0.17–0.76) for men and 0.47 (0.23–0.77) for women. Compared with the DRs, the proportion of cross-classification into exact plus adjacent quintiles with the FFQ1 ranged from 58 to 86% in men and from 57 to 86% in women. According to the robust Z scores and the Bland–Altman plot graphs, the underestimation errors in the FFQ1 tended to be greater in individuals with high mean levels of consumption for meat for men and for other vegetables for both men and women. Conclusion The FFQ demonstrated high reproducibility and reasonable validity for food group intake. This questionnaire is short and remains appropriate for identifying associations between diet and health/disease among adults in Japan.

scholarly journals Reproducibility and Validity of a Short Food Frequency Questionnaire for Dietary Assessment in Children Aged 7–9 Years in Spain

Nutrients ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 933 ◽  
Author(s):  
Jesus Vioque ◽  
Manuela Garcia-de-la-Hera ◽  
Sandra Gonzalez-Palacios ◽  
Laura Torres-Collado ◽  
Leyre Notario-Barandiaran ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Dietary Assessment ◽  
Correlation Coefficients ◽  
Food Group ◽  
Food Groups ◽  
Average Correlation ◽  
Blood Concentrations ◽  
Food Frequency ◽  
Wide Range ◽  
Β Carotene

The purpose of this study was to examine if the short semi-quantitative food frequency questionnaire (FFQ) is a reliable and valid tool to assess the diet of Spanish children aged 7–9 years. We collected data from 156 children of the birth cohort INMA (Infancia y Medio Ambiente (Environment and Childhood)). Children’s parents or care-givers completed a 46-item FFQ on two occasions over a 9–12-month period about the children’s diet. To explore the reproducibility of the FFQ, the nutrient and food group intake collected from the both FFQs were compared, while validity was examined by contrasting the nutrient values from the FFQs and the average of three 24-hour dietary recalls (24hDRs) taken in this period, and also with the concentration of several vitamins in the blood (carotenoids, vitamin D and α-tocopherol). Pearson and de-attenuated correlation coefficients were calculated. The average correlation coefficients for nutrient intake’s reproducibility was 0.41, ranging from 0.25 (calcium) to 0.65 (β-carotene), and for food group intake was 0.45, ranging from 0.18 (cereals) to 0.68 (sweetened beverages). Correlation coefficients slightly improved when we compared energy-adjusted intakes. The average correlation coefficients for validity against 24hDRs was 0.34 for energy-adjusted intakes, and 0.39 when de-attenuation coefficients were used. The validity coefficients against the blood concentrations of vitamins were 0.38 for β-cryptoxanthin, 0.26 for lycopene, 0,23 for α-carotene and 0.15 for β-carotene, all of them statistically significant (p < 0.05). This study suggests that our brief FFQ is a suitable tool for the dietary assessment of a wide range of nutrients and food groups in children 7–9 years, despite the low to moderate reproducibility and validity observed for some nutrients.

scholarly journals Reliability of a rapid hematology stain for sputum cytology

2014 ◽  
Vol 40 (3) ◽  
pp. 250-258 ◽  
Author(s):  
Jéssica Gonçalves ◽  
Emilio Pizzichini ◽  
Marcia Margaret Menezes Pizzichini ◽  
Leila John Marques Steidle ◽  
Cristiane Cinara Rocha ◽  
...  
Keyword(s):  
Interobserver Agreement ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Standard Technique ◽  
Cross Sectional Study ◽  
Induced Sputum ◽  
Cell Counting ◽  
Kappa Statistics ◽  
Cross Sectional ◽  
Intraclass Correlation Coefficients

Objective: To determine the reliability of a rapid hematology stain for the cytological analysis of induced sputum samples. Methods: This was a cross-sectional study comparing the standard technique (May-Grünwald-Giemsa stain) with a rapid hematology stain (Diff-Quik). Of the 50 subjects included in the study, 21 had asthma, 19 had COPD, and 10 were healthy (controls). From the induced sputum samples collected, we prepared four slides: two were stained with May-Grünwald-Giemsa, and two were stained with Diff-Quik. The slides were read independently by two trained researchers blinded to the identification of the slides. The reliability for cell counting using the two techniques was evaluated by determining the intraclass correlation coefficients (ICCs) for intraobserver and interobserver agreement. Agreement in the identification of neutrophilic and eosinophilic sputum between the observers and between the stains was evaluated with kappa statistics. Results: In our comparison of the two staining techniques, the ICCs indicated almost perfect interobserver agreement for neutrophil, eosinophil, and macrophage counts (ICC: 0.98-1.00), as well as substantial agreement for lymphocyte counts (ICC: 0.76-0.83). Intraobserver agreement was almost perfect for neutrophil, eosinophil, and macrophage counts (ICC: 0.96-0.99), whereas it was moderate to substantial for lymphocyte counts (ICC = 0.65 and 0.75 for the two observers, respectively). Interobserver agreement for the identification of eosinophilic and neutrophilic sputum using the two techniques ranged from substantial to almost perfect (kappa range: 0.91-1.00). Conclusions: The use of Diff-Quik can be considered a reliable alternative for the processing of sputum samples.

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