Alternatives in the Collection and Analysis of Food Frequency Interview Data

Samet, Jonathan M.; Humble, Charles G.; Skipper, Betty

doi:10.1093/oxfordjournals.aje.a113919

Cited by 67 publications

(27 citation statements)

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“…It was the first time an FFQ had been administered to this particular age group in India and the response was encouraging. There are a number of studies in the literature from Western countries, mostly epidemiological, in which FFQs have been administered to children 5 . The FFQ allows an assessment of the dietary intake of a large number of children, thus improving the power of the study, and it is relatively inexpensive to administer.…”

Section: Discussionmentioning

confidence: 99%

A qualitative assessment of nutrition knowledge levels and dietary intake of schoolchildren in Hyderabad

Vijayapushpam

Menon

Rao

et al. 2003

Public Health Nutr.

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Objectives: To assess the nutrition knowledge levels and dietary intake pattern of schoolchildren belonging to two groups of different socio-economic status (SES; high income/high SES and low income/low SES). Design: A purposive sampling method was employed. A validated food-frequency questionnaire was administered to assess the dietary intake of schoolchildren in four schools from two different socio-economic strata in the month of January 2001. The children were divided into two groups, one serving as the experimental group and the other as the control group. Subjects: Two hundred and seventy-two children aged between 12 and 14 years. Results: There was a significant improvement (P , 0.001) in the knowledge levels of high-SES schoolchildren as compared with low-SES schoolchildren. A significant difference was observed in the intake of protective foods like milk and milk products, green leafy vegetables and fruits between the two income groups. However, children from the high SES background preferred fast foods such as noodles and corn flakes to traditional foods. Irrespective of income group, most of the children consumed carbonated beverages. Conclusions: There was a significant difference in the intakes of protective foods and fast foods between the different income groups. However, the increased intake of fast foods and carbonated beverages by the children irrespective of SES needs to be discouraged as a part of nutrition education. The study indicated the need for repeated interventions for improvement of nutrition knowledge levels in low-SES children. KeywordsQualitative assessment Food-frequency questionnaire Socio-economic factors Traditional foods Nutrition educationIt is important to study the existing pattern of dietary intake in a given population to determine the food preferences, beliefs and food fads of the community, so as to plan an appropriate nutrition education package. Estimation of the community's dietary intake and precision in the collection of data depend on the resources available and the characteristics of the study population. Data on national food availability and food consumption patterns of communities provide information on dietary intake for large populations. Diet records, dietary recall methods and food-frequency questionnaires (FFQs) are common tools employed to measure the food consumption patterns of individual subjects in the epidemiology of diet-related diseases 1 . The food frequency method involves the collection of information about a list of food items for which average frequency of consumption is determined with reference to a specified period in the past. It requires neither specialised training for respondents nor a lengthy interview, and hence places a lighter burden on respondents, which encourages their participation.Compared with diet history and 24-hour recall methods, the FFQ method requires less specialised interviewer training. It can be undertaken by face-to-face personal interview, by telephone or by self-administration including mail surveys 2,3 ...

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Section: Discussionmentioning

confidence: 99%

A qualitative assessment of nutrition knowledge levels and dietary intake of schoolchildren in Hyderabad

Vijayapushpam

Menon

Rao

et al. 2003

Public Health Nutr.

View full text Add to dashboard Cite

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“…Although quantitative data on portion size of foods increase accuracy in estimating the intake of specific nutrients (Hankin, 1987). Samet et al (1984) noted that portion-size questions provided little additional information in ranking individuals . Humble et al (1987) reported that vitamin A intake calculated with and without portion sizes was similarly related to a reduced risk of lung cancer.…”

Section: Discussionmentioning

confidence: 99%

Intake of vegetables, fruits, beta-carotene, vitamin C and vitamin supplements and cancer incidence among the elderly: a prospective study

Shibata

Paganini‐Hill²,

Ross³

et al. 1992

Br J Cancer

324

194

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Summary A cohort of 11,580 residents of a retirement community initially free from cancer were followed from 1981 to 1989. A total of 1,335 incident cancer cases were diagnosed during the period. Relative risks of cancer were calculated for baseline consumption of vegetables, fruits, beta-carotene, dietary vitamin C, and vitamin supplements. After adjustment for age and smoking, no evidence of a protective effect was found for any of the dietary variables in men. However, an inverse association was observed between vitamin C supplement use and bladder cancer risk. In women, reduced cancer risks of all sites combined and of the colon were noted for combined intake of all vegetables and fruits, fruit intake alone, and dietary vitamin C. Supplemental use of vitamins A and C showed a protective effect on colon cancer risk in women. There was some suggestion that beta-carotene intake and supplemental use of vitamins A, C, and E were associated with reduced risk of lung cancer in women, but none of these results were statistically significant. These inverse associations observed in women seem to warrant further investigation, although there was inconsistency in results between the sexes. Diet appears to play an important role in human carcinogenesis (Ames, 1983; (Buring & Hennekens, 1989;Fontham, 1990; Willett, 1990a). The quality of the epidemiologic studies evaluating these hypotheses, especially in terms of statistical power and the rigor with which the dietary data were collected, has varied considerably.We report here the results of a prospective cohort study of an elderly population in which we examined the relationship between dietary intake of vegetables, fruits, beta-carotene, and vitamin C and the incidence of cancer. The effects of vitamin supplements on cancer risk was also assessed. Responses to each food item was assigned numerical values indicating approximate daily intake frequency (i.e., 0 for 'rarely or never', 0.01 for 'a few times per year', 0.03 for 'about monthly', 0.1 for 'a few times per month', 0.5 for 'a few times per week', and 1.0 for 'daily or almost daily'; if 'in season only' was marked, the figure was multiplied by 0.25) and these figures were summed over a group of food items to obtain scores for the following five food categories: (1) all vegetables and fruits (44 items), (2) all vegetables (21 items), (3) all fruits (23 items), (4) dark green vegeatables (other leafy greens, broccoli, and brussel sprouts), and (5) yellow vegetables (sweet potatoes, carrots, summer squash, red peppers, and chili peppers) (see Appendix). Therefore, the potential range of scores for each of these categories was from zero to the number of items in each food group (for a subject who ate all items in the group every day).Average daily intake of beta-carotene was estimated for each subject by summing the products of the respective betacarotene content in the common measure (serving size) of each food item (converted from Vitamin A values in the US Department of Agriculture tables of food composition (US Dep...

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“…A number of studies reported the benefits of using photographs to help individuals in estimating portion size (Morgan et al, 1982;Rutishauser, 1982;Chu et al, 1984;Guthrie, 1984;Samet et al, 1984;Byers et al, 1985;Pietinen et al, 1988a, b;Edington et al, 1989;Lee & Cunningham, 1990;Hankin et al, 1991;Tjonneland et al, 1991;Faggiano et al, 1992). Guthrie (1984) reported that between 14 and 67% of assessments of food portion size were in error by more than 50% when no aid was used.…”

Section: Introductionmentioning

confidence: 99%

An evaluation of a colour food photography atlas as a tool for quantifying food portion size in epidemiological dietary surveys

et al. 2005

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Objective: To test the validity of a colour food photography atlas for quantifying portion size eaten compared with weighed foods. Design: The colour food photography atlas was prepared by cooking, weighing and taking digital photographs of three portion sizes of 434 foods and beverages typical of the Italian diet. Subjects and interventions: In all, 448 male and female volunteers aged 6-60 y from a wide variety of social backgrounds completed 9075 assessments of food portions eaten at lunch and dinner in relation to a set of colour food photographs during 8 weeks of investigation. The amounts of foods eaten by individuals in five different cafeterias in Pavia, Northern Italy, were weighed by trained investigators at the time of serving and, within 5-10 min of the end of the meal, each subject was asked to quantify all foods consumed with reference to one of the three food photographs or in terms of virtual portions among those shown in the photographs.Results: Multiple regression analysis shows that weights of portion sizes chosen from the set of photographs are significantly associated (Po0.05) to weights of eaten portions (b ¼ 0.81; R 2 ¼ 0.70) and are independent of age, gender and BMI. The differences between mean weights of the portions chosen by individuals from photographs and mean weights of eaten foods are significant for all food categories (Po0.05), except for bread. However, because of the very large number of observations, the mean differences are very small (range: from þ 23.2 g ( þ 11.2%) for first courses to À1.3 g (À2.7%) for bread). Bland-Altman plots show that first courses limits of agreement are wide because the dispersion is increasing while weights are rising. Conclusions: The use of a series of three photographs and virtual portion sizes being associated with relatively small errors, our findings support the validity of using this colour food photography atlas as a tool for quantifying food portion size in epidemiological dietary surveys on different age groups of Italian subjects.

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Alternatives in the Collection and Analysis of Food Frequency Interview Data

Cited by 67 publications

References 0 publications

A qualitative assessment of nutrition knowledge levels and dietary intake of schoolchildren in Hyderabad

A qualitative assessment of nutrition knowledge levels and dietary intake of schoolchildren in Hyderabad

Intake of vegetables, fruits, beta-carotene, vitamin C and vitamin supplements and cancer incidence among the elderly: a prospective study

An evaluation of a colour food photography atlas as a tool for quantifying food portion size in epidemiological dietary surveys

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