Development of a dietary supplement database

Ashton, Bronwyn; Ambrosini, Gina L.; Marks, Geoffrey C.; Harvey, Philip W.; Bain, Christopher

doi:10.1111/j.1467-842x.1997.tb01783.x

Cited by 15 publications

(10 citation statements)

References 5 publications

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“…Nutrient intake from food and the consumption of dietary supplements was analysed using software and a supplements database (Ashton et al, 1997) developed by the Nutrition Program, University of Queensland.…”

Section: Discussionmentioning

confidence: 99%

Validation of a food-frequency questionnaire assessment of carotenoid and vitamin E intake using weighed food records and plasma biomarkers: The method of triads model

et al. 2004

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Background: Reliability or validity studies are important for the evaluation of measurement error in dietary assessment methods. An approach to validation known as the method of triads uses triangulation techniques to calculate the validity coefficient of a food-frequency questionnaire (FFQ). Objective: To assess the validity of an FFQ estimates of carotenoid and vitamin E intake against serum biomarker measurements and weighed food records (WFRs), by applying the method of triads. Design: The study population was a sub-sample of adult participants in a randomised controlled trial of b-carotene and sunscreen in the prevention of skin cancer. Dietary intake was assessed by a self-administered FFQ and a WFR. Nonfasting blood samples were collected and plasma analysed for five carotenoids (a-carotene, b-carotene, b-cryptoxanthin, lutein, lycopene) and vitamin E. Correlation coefficients were calculated between each of the dietary methods and the validity coefficient was calculated using the method of triads. The 95% confidence intervals for the validity coefficients were estimated using bootstrap sampling. Results: The validity coefficients of the FFQ were highest for a-carotene (0.85) and lycopene (0.62), followed by b-carotene (0.55) and total carotenoids (0.55), while the lowest validity coefficient was for lutein (0.19). The method of triads could not be used for b-cryptoxanthin and vitamin E, as one of the three underlying correlations was negative. Conclusions: Results were similar to other studies of validity using biomarkers and the method of triads. For many dietary factors, the upper limit of the validity coefficients was less than 0.5 and therefore only strong relationships between dietary exposure and disease will be detected.

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Section: Discussionmentioning

confidence: 99%

Validation of a food-frequency questionnaire assessment of carotenoid and vitamin E intake using weighed food records and plasma biomarkers: The method of triads model

et al. 2004

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“…Intakes of calcium and vitamin D were also considered as these nutrients are found in dairy products and may have independent associations with mortality (although dairy (Ashton et al, 1997).…”

Section: Dietary Assessmentmentioning

confidence: 99%

Dairy consumption and patterns of mortality of Australian adults

et al. 2010

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Background/Objectives: Dairy foods contain various nutrients that may affect health. We investigated whether intake of dairy products or related nutrients is associated with mortality due to cardiovascular disease (CVD), cancer and all causes. Subjects/Methods: We carried out a 16-year prospective study among a community-based sample of 1529 adult Australians aged 25-78 years at baseline. Habitual intakes of dairy products (total, high/low-fat dairy, milk, yoghurt and full-fat cheese), calcium and vitamin D were estimated as mean reported intake using validated food frequency questionnaires (FFQs) selfadministered in 1992, 1994 and 1996. National Death Index data were used to ascertain mortality and cause of death between 1992 and 2007. Hazard ratios (HRs) were calculated using Cox regression analysis. Results: During an average follow-up time of 14.4 years, 177 participants died, including 61 deaths due to CVD and 58 deaths due to cancer. There was no consistent and significant association between total dairy intake and total or cause-specific mortality. However, compared with those with the lowest intake of full-fat dairy, participants with the highest intake (median intake 339 g/day) had reduced death due to CVD (HR: 0.31; 95% confidence interval (CI): 0.12-0.79; P for trend ¼ 0.04) after adjustment for calcium intake and other confounders. Intakes of low-fat dairy, specific dairy foods, calcium and vitamin D showed no consistent associations. Conclusions: Overall intake of dairy products was not associated with mortality. A possible beneficial association between intake of full-fat dairy and cardiovascular mortality needs further assessment and confirmation.

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“…This conversion factor was called 'compound factor' (see Table 1 for examples). To determine the compound factor, several literature sources were used, and where existing factors were unavailable, factors were determined by calculating molecular weight and the proportion of the nutrient in the compound (9)(10)(11) . All nutrient values were entered into the database using the value and the unit of measurement as on the packaging.…”

Section: Methodsmentioning

confidence: 99%

Developing a database of vitamin and mineral supplements (ViMiS) for the Norfolk arm of the European Prospective Investigation into Cancer (EPIC-Norfolk)

Lentjes

Bhaniani

Mulligan

et al. 2010

Public Health Nutr.

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Objective: Supplements are an important source of micronutrient intake, which, unless taken into account, can misclassify individuals with regard to levels of nutrient exposure. A label-based vitamin and mineral supplements (ViMiS) database was developed to contain manufacturers' information and to enter supplement use by participants in the European Prospective Investigation into Cancer and Nutrition in Norfolk (EPIC-Norfolk). The ViMiS database contains information on all ingredients, broken down into nutrient information in order to be combined with nutrient intake derived from food consumption. Design: Development of the ViMiS database and cross-sectional analysis of supplement use in a population-based study. Setting: Men and women aged 40-79 years from the general population participating in the EPIC-Norfolk study between 1993 and 1997, with data available from 7 d diet diaries (7dDD). Subjects: A subset of 19 330 participants with available 7dDD and known supplement status. Results: To date, the ViMiS database includes 2066 supplements, which altogether contain 16 586 ingredients, with a median of eleven nutrient/ingredients per supplement. Forty per cent of the cohort took a supplement, of which cod liver oil was the most common (24?5 %). Conclusions: The ViMiS database provides a flexible tool for estimating total nutrient intake. The high prevalence of supplement use in the general population indicates that supplement use needs to be taken into account when examining the relationship of intake of particular nutrients to health outcomes. Keywords Dietary supplements Development label-based database EPIC-Norfolk ViMiSThe use of vitamin and mineral supplements (ViMiS; referred to as 'supplements') in the UK has risen to 40 % for women and 29 % for men according to national surveys held in 2000-2001 (1) . These results show that supplements can increase the mean intake of vitamins by 4-183 % and of minerals by 0-16 %, depending on the type of vitamin and sex and age of the participant. Previous studies indicate that supplement consumption should be taken into account when assessing dietary nutrient intake; otherwise misclassification of nutrient intakes of individuals and unclear relationships with biomarkers can occur (2) . Although several UK-based cohort studies have compared supplement users (SU) with nonsupplement users (NSU) with regard to sociodemographic factors, morbidity and nutrient and food intakes, they have not been able to estimate total nutrient exposure (3)(4)(5) , i.e. the combined nutrient exposure from foods and supplements.In order to analyse total nutrient exposure for the European Prospective Investigation into Cancer and Nutrition in Norfolk (EPIC-Norfolk), an equivalent to the UK National Food Composition Database (UK FCD) for supplement composition was needed. As laboratory analytical data were not available for supplements on the UK market in the early 1990s, nor to date, it was necessary to design a database structure and calculation method to calculate the nutrients fr...

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Development of a dietary supplement database

Cited by 15 publications

References 5 publications

Validation of a food-frequency questionnaire assessment of carotenoid and vitamin E intake using weighed food records and plasma biomarkers: The method of triads model

Validation of a food-frequency questionnaire assessment of carotenoid and vitamin E intake using weighed food records and plasma biomarkers: The method of triads model

Dairy consumption and patterns of mortality of Australian adults

Developing a database of vitamin and mineral supplements (ViMiS) for the Norfolk arm of the European Prospective Investigation into Cancer (EPIC-Norfolk)

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