scholarly journals Race-specific validation of food intake obtained from a comprehensive FFQ: the Adventist Health Study-2

2011 ◽  
Vol 14 (11) ◽  
pp. 1988-1997 ◽  
Author(s):  
Karen Jaceldo-Siegl ◽  
Jing Fan ◽  
Joan Sabaté ◽  
Synnove F Knutsen ◽  
Ella Haddad ◽  
...  
Keyword(s):  
Correlation Coefficients ◽  
Food Group ◽  
Seventh Day Adventist ◽  
Health Study ◽  
Food Groups ◽  
The Usa ◽  
Calibration Study ◽  
Cross Classification ◽  
Study Participants ◽  
Adventist Health Study

AbstractObjectiveTo assess race-specific validity of food and food group intakes measured using an FFQ.DesignCalibration study participants were randomly selected from the Adventist Health Study-2 (AHS-2) cohort by church, and then by subject-within-church. Intakes of forty-seven foods and food groups were assessed using an FFQ and then compared with intake estimates measured using six 24 h dietary recalls (24HDR). We used two approaches to assess the validity of the questionnaire: (i) cross-classification by quartile and (ii) de-attenuated correlation coefficients.SettingSeventh-day Adventist church members geographically spread throughout the USA and Canada.SubjectsMembers of the AHS-2 calibration study (550 whites and 461 blacks).ResultsThe proportion of participants with exact quartile agreement in the FFQ and 24HDR averaged 46 % (range: 29–87 %) in whites and 44 % (range: 25–88 %) in blacks. The proportion of quartile gross misclassification ranged from 1 % to 11 % in whites and from 1 % to 15 % in blacks. De-attenuated validity correlations averaged 0·59 in whites and 0·48 in blacks. Of the forty-seven foods and food groups, forty-three in whites and thirty-three in blacks had validity correlations >0·4.ConclusionsThe AHS-2 questionnaire has good validity for most foods in both races; however, validity correlations tend to be higher in whites than in blacks.

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 Comparison of phytosterol intake from FFQ with repeated 24-h dietary recalls of the Adventist Health Study-2 calibration sub-study

2019 ◽  
Vol 121 (12) ◽  
pp. 1424-1430 ◽  
Author(s):  
Rawiwan Sirirat ◽  
Celine Heskey ◽  
Ella Haddad ◽  
Yessenia Tantamango-Bartley ◽  
Gary Fraser ◽  
...  
Keyword(s):  
Method Validation ◽  
Correlation Coefficients ◽  
Health Study ◽  
Strong Correlations ◽  
Future Studies ◽  
Disease Outcomes ◽  
Cross Classification ◽  
Using Data ◽  
Flame Ionisation ◽  
Adventist Health Study

AbstractWe evaluated the performance of an FFQ in estimating phytosterol intake against multiple 24-h dietary recalls (24HDR) using data from 1011 participants of the calibration sub-study of the Adventist Health Study-2 (AHS-2) cohort. Dietary assessments of phytosterol intake included a self-administered FFQ and six 24HDR and plasma sterols. Plasma sterols were determined using the GLC flame ionisation method. Validation of energy-adjusted phytosterol intake from the FFQ with 24HDR was conducted by calculating crude, unadjusted, partial and de-attenuated correlation coefficients (r) and cross-classification by race. On average, total phytosterol intake from the FFQ was 439·6 mg/d in blacks and 417·9 mg/d in whites. From the 24HDR, these were 295·6 mg/d in blacks and 351·4 mg/d in whites. Intake estimates of β-sitosterol, stigmasterol, other plant sterols and total phytosterols from the FFQ had moderate to strong correlations with estimates from 24HDR (r 0·41–0·73). Correlations were slightly higher in whites (r 0·42–0·73) than in blacks (r 0·41–0·67). FFQ estimates were poorly correlated with plasma sterols as well as 24HDR v. plasma sterols. We conclude that the AHS-2 FFQ provided reasonable estimates of phytosterol intake and may be used in future studies relating phytosterol intake and disease outcomes.

Comparison of the Petrifilm™ Yeast and Mold Culture Film Method to Conventional Methods for Enumerating Yeasts and Molds in Foods

1991 ◽  
Vol 54 (6) ◽  
pp. 443-447 ◽  
Author(s):  
L. R. BEUCHAT ◽  
B. V. NAIL ◽  
R.E. BRACKETT ◽  
T. L. FOX
Keyword(s):  
Correlation Coefficients ◽  
Food Group ◽  
Black Pepper ◽  
Plate Count ◽  
Food Groups ◽  
Plate Count Agar ◽  
Plate Counts ◽  
Yeasts And Molds ◽  
Potential Food ◽  
Film Method

Petrifilm™ Yeast and Mold (YM) plates were compared to acidified potato dextrose agar (APDA) and chloramphenicol-supplemented plate count agar (CPCA) for its suitability to enumerate yeasts and molds in 13 groups of food products. These products consisted of beans (dry and frozen, green), corn meal, flour (wheat), fruit (apple), a meat/vegetable entree (chicken pot pie), a precooked meat (beef), milk (dehydrated, nonfat), nuts (pecans), pasta, potatoes (dehydrated), precooked sausage, and a spice (black pepper). Correlation coefficients of Petrifilm™ YM plates versus APDA and CPCA pour plates for recovering total yeasts and molds from a composite of the thirteen test foods were, respectively, 0.961 and 0.974. Individually, Petrifilm™ YM plate counts were equivalent or higher than APDA and CPCA for some food groups and lower for other food groups. Because food particle interference can make enumeration of yeast and mold colonies on Petrifilm™ YM plates difficult for some food groups, potential food interference will need to be evaluated for each food group tested.

scholarly journals Environmental Impacts of Foods in the Adventist Health Study-2 Dietary Questionnaire

2020 ◽  
Vol 12 (24) ◽  
pp. 10267
Author(s):  
Andrew Berardy ◽  
Ujué Fresán ◽  
Rodrigo A. Matos ◽  
Abigail Clarke ◽  
Alfredo Mejia ◽  
...  
Keyword(s):  
Land Use ◽  
Life Cycle ◽  
Protein Content ◽  
Environmental Impacts ◽  
Water Consumption ◽  
Health Study ◽  
Processed Foods ◽  
Food Groups ◽  
Minimally Processed ◽  
Adventist Health Study

The objective of this study was to use life cycle assessment to estimate the environmental impacts (from farm to factory gate) of the 198 hard-coded line-items included in the food frequency questionnaire of the Adventist Health Study-2 survey and to assess differences among food groups. Life cycle inventories were created using existing data sources and primary data, and their global warming potential (GWP), land use, and water consumption impacts were assessed using the ReCiPe 2016 methodology. In addition to presenting the impacts according to weight and protein content across food groups, we include the novel addition of presenting impacts according to the NOVA classification indicating various levels of processing. Food categories were compared based on one kilogram of edible food, protein food sources were compared based on one kilogram of protein, and NOVA comparisons were based on one serving. In general, meats had the highest environmental impacts per both weight and protein content, while the lowest overall impacts per kilogram came from fruits. Meat analogs had the lowest overall impacts per kilogram of protein, contrary to expectations that additional processing would result in higher environmental impacts when compared to whole plant-based foods. Per serving, ultra-processed foods had the highest GWP, processed foods the highest land use, and minimally processed foods the highest water consumption. Results from this analysis were consistent with other studies. Results from this study suggest that meat and ultra-processed foods have the overall worst environmental impacts, but high water consumption in some minimally processed foods means that those should be carefully considered as well.

scholarly journals Patterns of food consumption among vegetarians and non-vegetarians

2014 ◽  
Vol 112 (10) ◽  
pp. 1644-1653 ◽  
Author(s):  
Michael J. Orlich ◽  
Karen Jaceldo-Siegl ◽  
Joan Sabaté ◽  
Jing Fan ◽  
Pramil N. Singh ◽  
...  
Keyword(s):  
Health Outcomes ◽  
Food Consumption ◽  
Dietary Patterns ◽  
A Priori ◽  
Food Group ◽  
Epidemiological Studies ◽  
Consumption Patterns ◽  
Health Study ◽  
Food Groups ◽  
Vegetarian Diets

Vegetarian dietary patterns have been reported to be associated with a number of favourable health outcomes in epidemiological studies, including the Adventist Health Study 2 (AHS-2). Such dietary patterns may vary and need further characterisation regarding foods consumed. The aims of the present study were to characterise and compare the food consumption patterns of several vegetarian and non-vegetarian diets. Dietary intake was measured using an FFQ among more than 89 000 members of the AHS-2 cohort. Vegetarian dietary patterns were defined a priori, based on the absence of certain animal foods in the diet. Foods were categorised into fifty-eight minor food groups comprising seventeen major food groups. The adjusted mean consumption of each food group for the vegetarian dietary patterns was compared with that for the non-vegetarian dietary pattern. Mean consumption was found to differ significantly across the dietary patterns for all food groups. Increased consumption of many plant foods including fruits, vegetables, avocados, non-fried potatoes, whole grains, legumes, soya foods, nuts and seeds was observed among vegetarians. Conversely, reduced consumption of meats, dairy products, eggs, refined grains, added fats, sweets, snack foods and non-water beverages was observed among vegetarians. Thus, although vegetarian dietary patterns in the AHS-2 have been defined based on the absence of animal foods in the diet, they differ greatly with respect to the consumption of many other food groups. These differences in food consumption patterns may be important in helping to explain the association of vegetarian diets with several important health outcomes.

scholarly journals Validation and reproducibility of an FFQ for use among adults in Botswana

2012 ◽  
Vol 16 (11) ◽  
pp. 1995-2004 ◽  
Author(s):  
Maria D Jackson ◽  
Boitumelo S Motswagole ◽  
Lemogang D Kwape ◽  
Rosemary I Kobue-Lekalake ◽  
Tidimalo B Rakgantswana ◽  
...  
Keyword(s):  
Vitamin E ◽  
Correlation Coefficients ◽  
Food Group ◽  
Leafy Vegetables ◽  
Spearman Correlation ◽  
Food Groups ◽  
Nutrient Intakes ◽  
Relative Validity ◽  
Dark Green ◽  
Β Carotene

AbstractObjectiveTo evaluate the validity and reproducibility of a 122-item interviewer-administered quantitative FFQ developed to determine food and nutrient intakes of adults in Botswana.DesignRelative validity of the FFQ was evaluated by comparing nutrient and food group intakes against four non-consecutive 24 h recalls administered over 12 months. The FFQ was repeated after 1 year to assess reproducibility.SettingKanye, Botswana.SubjectsSeventy-nine adults aged 18–75 years.ResultsSpearman correlation coefficients for the validity of energy-adjusted nutrients ranged from 0·42 (carbohydrate) to 0·49 (protein) for macronutrients and from 0·23 (Fe) to 0·44 (PUFA) for micronutrients. Exact agreement of quartile distribution for nutrients between the FFQ and recalls ranged from 27 % to 72 %. Weighted kappa values were lowest for retinol (0·13), Fe (0·22) and β-carotene (0·25) and ranged from 0·33 (SFA) to 0·59 (folate) for other nutrients (energy, carbohydrate, protein, fat, Ca and vitamin E). Spearman correlation coefficients between the recalls and FFQ for food groups ranged from 0·18 (dark green leafy and yellow vegetables) to 0·58 (poultry). Reproducibility correlation coefficients (energy-adjusted) varied between 0·39 for retinol and 0·66 for vitamin E, with most values falling between 0·50 and 0·60.ConclusionsThe FFQ had good relative validity for estimating habitual food group and nutrient intakes, but was poor for some micronutrients (Fe, retinol and β-carotene) and foods (fruits and dark green leafy vegetables).

scholarly journals Validation of a diet history questionnaire for use with Costa Rican adults

2008 ◽  
Vol 11 (1) ◽  
pp. 65-75 ◽  
Author(s):  
Anne Chinnock
Keyword(s):  
Standard Method ◽  
Rural Areas ◽  
Nutrient Intake ◽  
Correlation Coefficients ◽  
Food Group ◽  
Food Groups ◽  
Food Record ◽  
Diet History Questionnaire ◽  
Diet History ◽  
The Mean

AbstractObjectiveTo validate a diet history questionnaire (DHQ) using a weighed food record (WFR) as the standard method in the estimation of food consumption and nutrient intake in a group of adults.DesignWFR: all foods consumed by subjects during 7 consecutive days were weighed and recorded by nutrition students. Two DHQ interviews were carried out on days 1 (first diet history questionnaire, DHQ1) and 28 (second diet history questionnaire, DHQ2).SettingCosta Rica.SubjectsSixty adults: 30 men and 30 women; 30 living in urban and 30 in rural areas.ResultsIn comparison to the WFR, the DHQ1 gave statistically significant higher estimates of the mean intake of 19 nutrients for men and of three nutrients for women. The uncorrected correlation coefficients for nutrient intake according to both methods ranged from 0.40 to 0.83 for males and from 0.22 to 0.62 for females. Percentage of subjects classified in the same quartiles of nutrient intake according to each method ranged from 33.3% to 63.3% for males and from 23.3% to 53.3% for females. Misclassification in extreme quartiles ranged from 0% to 13.3% for both sexes. The mean food group consumption, according to the DHQ1, when compared with the WFR, gave statistically significant differences for three of the 18 food groups for men and for two groups in the case of women. The two applications of the DHQ gave similar results.ConclusionValidation of a DHQ using a WFR as the standard method gave results that compare favourably with those reported by other authors. This study found important differences in the response of men and women to the DHQ: among men, the estimates of mean nutrient intake from DHQ1 were significantly greater than those of the WFR, while in the case of women, the mean nutrient intake estimates from both methods were not significantly different. There was a higher degree of correlation between the DHQ1 and the WFR mean nutrient intakes among men than among women. The DHQ showed good reproducibility.

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 evaluation of a Nutrition Transition-FFQ for adolescents in South India

2017 ◽  
Vol 20 (7) ◽  
pp. 1162-1172 ◽  
Author(s):  
Nida I Shaikh ◽  
Jennifer K Frediani ◽  
Usha Ramakrishnan ◽  
Shailaja S Patil ◽  
Kathryn M Yount ◽  
...  
Keyword(s):  
South India ◽  
Nutrition Transition ◽  
Eating Behaviour ◽  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Face Validity ◽  
Food Groups ◽  
Eating Behaviours ◽  
Indian Adolescents ◽  
Cross Classification

AbstractObjectiveTo develop and evaluate a Nutrition Transition-FFQ (NT-FFQ) to measure nutrition transition among adolescents in South India.DesignWe developed an interviewer-administered NT-FFQ comprising a 125-item semi-quantitative FFQ and a twenty-seven-item eating behaviour survey. The reproducibility and validity of the NT-FFQ were assessed using Spearman correlations, intra-class correlation coefficients (ICC), and levels of agreement using Bland–Altman and cross-classification over 2 months (NT-FFQ1 and NT-FFQ2). Validity of foods was evaluated against three 24-h dietary recalls (24-HR). Face validity of eating behaviours was evaluated through semi-structured cognitive interviews. The reproducibility of eating behaviours was assessed using weighted kappa (κw) and cross-classification analyses.SettingVijayapura, India.SubjectsA representative sample of 198 adolescents aged 14–18 years.ResultsReproducibility of NT-FFQ: Spearman correlations ranged from 0·33 (pulses) to 0·80 (red meat) and ICC from 0·05 (fruits) to 1·00 (tea). On average, concordance (agreement) was 60 % and discordance was 7 % for food groups. For eating behaviours, κw ranged from 0·24 (eating snacks while watching television) to 0·67 (eating lunch at home) with a mean of 0·40. Validity of NT-FFQ: Spearman correlations ranged from 0·11 (fried traditional foods) to 0·70 (tea) and ICC ranged from 0·02 (healthy global foods) to 1·00 (grains). The concordance and discordance were 48 % and 8 %, respectively. Bland–Altman plots showed acceptable agreement between NT-FFQ2 and 24-HR. The eating behaviours had acceptable face validity.ConclusionsThe NT-FFQ has good reproducibility and acceptable validity for food intake and eating behaviours. The NT-FFQ can quantify the nutrition transition among Indian adolescents.

scholarly journals Vegetarian diets and cardiovascular risk factors in black members of the Adventist Health Study-2

2014 ◽  
Vol 18 (3) ◽  
pp. 537-545 ◽  
Author(s):  
Gary Fraser ◽  
Sozina Katuli ◽  
Ramtin Anousheh ◽  
Synnove Knutsen ◽  
Patti Herring ◽  
...  
Keyword(s):  
Risk Factors ◽  
Cardiovascular Risk ◽  
Cardiovascular Risk Factors ◽  
Health Study ◽  
Odds Ratios ◽  
Cross Sectional ◽  
Cross Sectional Analysis ◽  
The Usa ◽  
Sectional Analysis ◽  
Adventist Health Study

AbstractObjectiveTo compare cardiovascular risk factors between vegetarians and non-vegetarians in black individuals living in the USA.DesignA cross-sectional analysis of a sub-set of 592 black women and men enrolled in the Adventist Health Study-2 (AHS-2) cohort of Seventh-day Adventists.SettingMembers of the AHS-2 cohort, who lived in all states of the USA and provinces of Canada.SubjectsBlack/African-American members of two sub-studies of AHS-2 where blood and physiological measurements were obtained.ResultsOf these women and men, 25 % were either vegan or lacto-ovo-vegetarians (labelled ‘vegetarian/vegans’), 13 % were pesco-vegetarian and 62 % were non-vegetarian. Compared with non-vegetarians, the vegetarian/vegans had odds ratios for hypertension, diabetes, high blood total cholesterol and high blood LDL-cholesterol of 0·56 (95 % CI 0·36, 0·87), 0·48 (95 % CI 0·24, 0·98), 0·42 (95 % CI 0·27, 0·65) and 0·54 (95 % CI 0·33, 0·89), respectively, when adjusted for age, gender, education, physical activity and sub-study. Corresponding odds ratios for obesity in vegetarian/vegans and pesco-vegetarians, compared with non-vegetarians, were 0·43 (95 % CI 0·28, 0·67) and 0·47 (95 % CI 0·27, 0·81), respectively; and for abdominal obesity 0·54 (95 % CI 0·36, 0·82) and 0·50 (95 % CI 0·29, 0·84), respectively. Results for pesco-vegetarians did not differ significantly from those of non-vegetarians for other variables. Further adjustment for BMI suggested that BMI acts as an intermediary variable between diet and both hypertension and diabetes.ConclusionsAs with non-blacks, these results suggest that there are sizeable advantages to a vegetarian diet in black individuals also, although a cross-sectional analysis cannot conclusively establish cause.

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