The relative validity of a computerized food frequency questionnaire for estimating intake of dietary iron and its absorption modifiers

Heath, Anne‐Louise M; Skeaff, C. Murray; Gibson, Rosalind S.

doi:10.1038/sj.ejcn.1601063

Cited by 54 publications

(90 citation statements)

References 22 publications

(25 reference statements)

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“…There are no existing iron-specific questionnaires in the literature with which to compare the validity of the newly developed dietary instrument, except for the meal-based FFQ developed in New Zealand by Heath et al (2000), on which the current instrument was based. On the whole, the results of the current analyses are highly comparable to the New Zealand data.…”

Section: Discussionmentioning

confidence: 99%

“…The adjustment factor was equal to the overall meal frequency divided by the sum of the individual meal frequencies, and was calculated for each meal and snack category. The 'adjusted' nutrient intakes were calculated by multiplying the individual meal frequencies reported for each meal by the corresponding adjustment factor (Heath et al, 2000).…”

Section: Iiatmentioning

confidence: 99%

“…The questionnaire was developed in collaboration with the Institute of Food Research in Norwich (UK) and was to a large extent inspired by an existing, validated food frequency questionnaire (FFQ) developed at the University of Otago, Dunedin, New Zealand (Heath et al, 2000). The aim of the present study was to validate the newly developed Belgian version of the iron intake assessment tool (IIAT), designed specifically to assess iron, calcium and vitamin C intake, in women aged 18-39 y.…”

Section: Introductionmentioning

confidence: 99%

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Validity and reproducibility of a computerised tool for assessing the iron, calcium and vitamin C intake of Belgian women

et al. 2004

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Objective: To determine the relative validity of a newly developed iron intake assessment tool, designed specifically to assess iron, calcium and vitamin C intake. Design: Estimates of iron, calcium and vitamin C intake from a computerised iron intake assessment tool compared with those from 11-day estimated dietary records. Setting: Region of Ghent (N ¼ 7225 000), a city in Flanders, the Dutch-speaking part of Belgium. Subjects: In all, 50 women aged 18-39 y, participating in a large-scale epidemiological study on iron intake and iron status. Main results: Mean dietary iron intake from the 11-day food record, the unadjusted dietary iron intake assessment tool and the adjusted tool was, respectively, 10.572.7, 10.474.3 and 9.672.9 mg. For the different nutrients, the correlation coefficients vary from 0.45 to 0.60 for adjusted intake. The mean difference of iron intake by the two methods (0.872.9 mg) did not differ significantly from zero. The new method correctly classified 38% (iron), 38% (calcium) and 58% (vitamin C) of the subjects to the correct tertile. The correlation coefficients ranged from 0.48 for adjusted vitamin C intake to 0.73 for adjusted calcium intake between two administrations. Conclusion: The newly developed instrument can be used to assess mean group intakes of iron, calcium and vitamin C in women consuming a Western diet. However, since the ranking capability of the new tool is rather weak, further refinement of the tool is required to produce a robust method for assessing iron, calcium and vitamin C intakes of individuals.

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Section: Discussionmentioning

confidence: 99%

Section: Iiatmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Validity and reproducibility of a computerised tool for assessing the iron, calcium and vitamin C intake of Belgian women

et al. 2004

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“…To quantify the caffeine and calcium intake in the diet, two instruments were constructed following the model of the validated semi-quantitative food frequency questionnaire (FFQ) proposed by Heath et al, 26 with adaptations for the population studied.…”

Section: Calcium and Caffeinementioning

confidence: 99%

Association between low bone mass and calcium and caffeine intake among perimenopausal women in Southern Brazil: cross-sectional study

Harter

Busnello

Dibi³

et al. 2013

Sao Paulo Med. J.

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CONTEXT AND OBJECTIVE: Osteoporosis is a skeletal abnormality characterized by reduction and alteration of bone microarchitecture that results in increased fragility and greater predisposition to fractures. Age and low bone mass are the main non-modifiable risk factors for osteoporotic fractures. The modifiable factors include sedentary lifestyle, inadequate calcium intake, excessive alcohol and/or caffeine consumption, smoking and low body weight. The aim here was to evaluate the association between low bone mass and calcium and caffeine intake among perimenopausal women in Southern Brazil. DESIGN AND SETTING: Cross-sectional study conducted in Porto Alegre and Canoas, Rio Grande do Sul, Brazil. METHODS: Women (n = 155) of mean age 53.6 ± 9.5 years were evaluated through a cross-sectional study in Southern Brazil. Food frequency questionnaires, bone mass evaluation using calcaneal ultrasound and anthropometric assessment were used. RESULTS: The prevalence of overweight was 67.7%. In the bone mass screening, 30.3% had low bone mass and 4.5% had osteoporosis. The median calcium intake was 574.94 mg/day and the caffeine intake was 108.11 mg/day. No association was found between bone mass and anthropometric parameters, calcium intake or caffeine intake. It was found that 38.4% of the women had low bone mass. CONCLUSIONS: No association was found between calcium and caffeine intake and bone mass. High prevalence of low bone mass was observed. RESUMO CONTEXTO E OBJETIVO:A osteoporose é uma alteração esquelética caracterizada pela redução e pela alteração da microarquitetura óssea, que resultam em aumento da fragilidade e maior predisposição a fraturas. A idade e a baixa massa óssea são os principais fatores de risco não modificáveis para fraturas osteoporóticas. Os fatores modificáveis incluem sedentarismo, inadequada ingestão de cálcio, excessivo consumo de álcool e/ou cafeína, tabagismo e baixo peso corporal. O objetivo foi avaliar associação entre baixa massa óssea e ingestão de cálcio e cafeína por mulheres climatéricas no Sul do Brasil. TIPO DE ESTUDO E LOCAL: Estudo transversal realizado em Porto Alegre e Canoas, Rio Grande do Sul, Brasil. MÉTODOS: Mulheres (n = 155) com idade média de 53,6 ± 9,5 anos foram avaliadas em um estudo transversal na região Sul do Brasil. Foram utilizados questionários de frequência alimentar, avaliação da massa óssea por ultrassonometria de calcâneo e avaliação antropométrica. RESULTADOS: A prevalência de sobrepeso foi de 67,7%. No rastreamento de massa óssea, 30,3% apresentou baixa massa óssea e 4,5%, osteoporose. A ingestão mediana de cálcio foi de 574,94 mg/dia e de cafeína foi de 108,11 mg/dia. Não foi encontrada associação entre massa óssea e os parâmetros antropométricos, ingestão de cálcio ou de cafeína. Verificou-se que 38,4% das mulheres apresentaram perda de massa óssea. CONCLUSÕES: Não foi encontrada associação entre a ingestão de cálcio e cafeína com a massa óssea. Foi observada alta prevalência de baixa massa óssea.

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The development and relative validity of a food frequency questionnaire for the assessment of dietary iron intakes in women of childbearing age

et al. 2010

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Iron (Fe) deficiency states are the most common nutritional deficiencies in developed countries (1) and women of childbearing age are at particular risk because of the effects of menstruation and pregnancy (2) . The National Diet and Nutrition Survey (2004), reported mean intakes for total Fe in all women (19-64 years) as 10.0 mg/d which is 82 % of the RNI (3) . There are very few validated nutritional screening instruments available in the UK, which can be used to estimate Fe intake to indicate nutritional risk. The aim of this research was to develop and determine the relative validity of an FFQ for assessing Fe intakes in a population of women of childbearing age.Thirty women of childbearing age between 19 and 45 years were recruited for the study. All women who volunteered were included once they met the age criteria. An Fe-specific checklist was developed by including foods that contributed at least 3 % total Fe to the diet using data from the most recently published National Diet and Nutrition Survey (3) .The final version of the FFQ contained 74 food items and took approximately 10 to 15 min to complete. Participants were required to complete the FFQ based on their dietary intake over the previous 14 d. This was followed by the completion of a 12-d diet record which was used as the reference method of dietary analysis. The level of agreement between the two methods of dietary assessment for Fe intakes were analysed using the Bland-Altman method.The Bland-Altman analysis demonstrated a relatively good agreement between the two methods at group level (mean difference = 2.06 mg (95% CI -4.85 mg, + 8.97 mg)). The large limits of agreement indicated that there was poor agreement between the two methods at the individual level. Positive correlations were observed (r = 0.44) at P < 0.05.Initial validation of the FFQ indicates that this tool could be successfully used for researching Fe intakes in groups of women of childbearing age in the United Kingdom. It is, however, not acceptable for use in determining absolute intakes in individuals and consequently should not replace the diet record in a clinical setting. An important observation is that participants tended to over estimate their Fe intakes using the FFQ compared to diet record.

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The relative validity of a computerized food frequency questionnaire for estimating intake of dietary iron and its absorption modifiers

Cited by 54 publications

References 22 publications

Validity and reproducibility of a computerised tool for assessing the iron, calcium and vitamin C intake of Belgian women

Validity and reproducibility of a computerised tool for assessing the iron, calcium and vitamin C intake of Belgian women

Association between low bone mass and calcium and caffeine intake among perimenopausal women in Southern Brazil: cross-sectional study

The development and relative validity of a food frequency questionnaire for the assessment of dietary iron intakes in women of childbearing age

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