Validity and Reproducibility of the Iodine Dietary Intake Questionnaire Assessment Conducted for Young Polish Women

Głąbska, Dominika; Malowaniec, Ewa; Guzek, Dominika

doi:10.3390/ijerph14070700

Cited by 21 publications

(29 citation statements)

References 67 publications

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“…Taking it into account, it must be emphasized, that the validity lower than reproducibility may have been observed not due to low accuracy in the case of food frequency questionnaire, but due to a low accuracy of vitamin D intake assessment in the case of dietary record. It also results from the fact, that validity is commonly lower than reproducibility, being observed in several validation studies [ 21 , 32 , 33 , 45 , 46 ].…”

Section: Discussionmentioning

confidence: 99%

“…The validity and reproducibility of the Cro-VIDEO-FFQ questionnaire were based on the definition by Willett and Lenart [ 31 ], and the validation process was conducted according to the same methodology as for the previously conducted validations [ 32 , 33 ]. As the aim of the study was to validate the food frequency questionnaire to analyze the diet against the other method enabling the analysis of diet, the biomarkers of vitamin D status were not included to assess the nutritional status, as well as the vitamin D supplementation that was applied by respondents was not included in the assessment.…”

Section: Methodsmentioning

confidence: 99%

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The Possibility of Applying the Vitamin D Brief Food Frequency Questionnaire as a Tool for a Country with No Vitamin D Data in Food Composition Tables

et al. 2018

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Although the role of vitamin D is well known, the possibility of assessing its intake may be constricted in countries with no vitamin D data in food composition tables, as in the case of Croatia. The aim of the presented study was to adjust the VIDEO-FFQ (Vitamin D Estimation Only—Food Frequency Questionnaire), previously validated in Poland, to the Croatian population and to assess the validity and reproducibility of the adjusted Cro-VIDEO-FFQ (Croatian—VIDEO-FFQ). The study involved a group of Croatian women aged 20–30 and the Polish questionnaire was adjusted for a population due to similarities of the nutritional habits between countries. 106 individuals were recruited and 63 completed all the stages of the study. Participants conducted a 3-day dietary record and filled out the Cro-VIDEO-FFQ1 (first stage), as well as the same questionnaire (Cro-VIDEO-FFQ2) 6 weeks after (second stage). The following vitamin D intakes were observed in the studied group: 1.9 µg (0.2–8.0 µg) for 3-day dietary record, 3.3 µg (1.1–10.6 µg) for Cro-VIDEO-FFQ1, 3.6 µg (1.4–7.8 µg) for Cro-VIDEO-FFQ2. The Bland-Altman indexes in assessment of validity and reproducibility were 4.8% and 6.3%, respectively, with mean differences of 0.55 µg and 0.12 µg, as well as limits of agreement −0.91–2.01 µg and −0.44–0.69 µg. The kappa coefficient indicated a fair agreement for validity (0.21) and substantial for reproducibility (0.62), while correlations were significant (p = 0.0027, r = 0.37 for validity; p < 0.0001, r = 0.80 for reproducibility). It was observed that VIDEO-FFQ may be adjusted as a simple tool to assess vitamin D intake in a population with no vitamin D data in food composition tables, while Cro-VIDEO-FFQ may be a valid tool for nutritional assessment in Croatia.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

The Possibility of Applying the Vitamin D Brief Food Frequency Questionnaire as a Tool for a Country with No Vitamin D Data in Food Composition Tables

et al. 2018

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“…All food products meeting the assumed criteria were included in the designed questionnaire, where they were grouped into food product groups characterized by similar folate contents, as is the case in other previously published validation studies [ 24 , 25 , 26 ]. Afterwards, the food products were clustered into 25 food product groups, while vegetables were clustered into 3 separate groups.…”

Section: Methodsmentioning

confidence: 99%

“…The most popular serving sizes were based on the Polish food model booklet [ 30 ], as well as on our own previous studies of food frequency questionnaires [ 24 , 25 , 26 ] and then verified by a dietitian during the pilot research. In the Fol-IC-FFQ these sizes were indicated both in grams and as the described serving sizes.…”

Section: Methodsmentioning

confidence: 99%

Development and Validation of the Brief Folate-Specific Food Frequency Questionnaire for Young Women’s Diet Assessment

Głąbska

Książek

Guzek

2017

IJERPH

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The tools enabling brief assessment of folate intake may be of great value for public health purposes. The aim of the presented study was to design a brief folate-specific food frequency questionnaire for Central and Eastern European population of women, as well as to assess the validity and reproducibility of the designed Folate-Intake Calculation-Food Frequency Questionnaire (Fol-IC-FFQ) on a group of Polish women aged 20–30 years. Participants collected 3-day dietary records and completed the Fol-IC-FFQ twice (FFQ1: directly after the dietary record; and FFQ2: six weeks later). The analysis included an assessment of validity (comparison of the results of FFQ1 and 3-day dietary record) and of reproducibility (comparison of the results of FFQ1 and FFQ2). In assessment of validity, a Bland-Altman index of 5.3% was observed. In assessment of reproducibility, a Bland-Altman index of 2.7% was observed, the share of individuals classified into the same intake adequacy category was over 85%, the share of individuals classified into the same tertile was almost 75%, the weighted κ statistic indicated substantial agreement (0.67) and correlation was significant (p = 0.0000; R = 0.7995). Assessment of the Fol-IC-FFQ revealed a satisfactory level of validity and very good level of reproducibility in the population of young Polish women. The Fol-IC-FFQ may be considered a valid tool for the assessment of folate intake in young Polish women and a promising tool for the assessment of folate intake in young women in Central and Eastern Europe.

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“…To further inform the health care provider, a dietary analysis would be useful but is cumbersome; many physicians do not have access to nutritional supports nor is it practical to analyse extensive multi-day diet diaries with every patient. While there are several lengthy validated food frequency questionnaires (FFQ) which can reliably assess iodine intake [14][15][16], a short FFQ validated in UK females of child bearing age could arguably be used simply in a clinical setting by any health care professional [17]. However, the results of this FFQ validation showed that the contribution of dietary iodine was calculated as 12% from fish or seafood and 88% from dairy.…”

Section: Introductionmentioning

confidence: 99%

Assessing Iodine Status in Frontline Healthcare

Ciara¹

2018

J Nutri Med Diet Care

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Introduction: Iodine is essential for the synthesis of thyroid hormones and both hypothyroidism and iodine deficiency are prevalent worldwide. Assessing iodine status in the individual is difficult. Spot urine iodine measurement, while readily available, is not accurate. However, combining the clinical picture with a brief dietary history along with this simple measurement may give further insight into the likely iodine requirements of an individual. Supporting nutritional deficiency in subclinical hypothyroidism is proposed to be helpful in reducing possible requirements for pharmacological intervention in the future although further studies are needed in this area. This is of particular importance in highrisk groups such as those trying to conceive, or patients with subfertility or recurrent miscarriage. Case description: In this case report a 66-yr-old woman with symptomatic subclinical hypothyroidism presents with a low dietary intake of iodine and a correlating low urine iodine. These three factors taken together suggested a possible iodine deficiency. Replacement of iodine with a safe and moderate amount of iodine (75 µg/day, 50% RDA) via supplement and counselling the patient to increase simple sources of iodine in the diet restored euthryoidism and resolved all symptoms. Conclusions: We propose a simple strategy for the frontline healthcare provider to estimate iodine requirements in an individual-correlating a brief dietary history, low urine iodine and suboptimal thyroid function tests. We recommend that supplementation to increase iodine is conservative and in the short-term only to avoid iodine excess. Dietary intake of iodine should be encouraged to maintain levels thereafter.

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Validity and Reproducibility of the Iodine Dietary Intake Questionnaire Assessment Conducted for Young Polish Women

Cited by 21 publications

References 67 publications

The Possibility of Applying the Vitamin D Brief Food Frequency Questionnaire as a Tool for a Country with No Vitamin D Data in Food Composition Tables

The Possibility of Applying the Vitamin D Brief Food Frequency Questionnaire as a Tool for a Country with No Vitamin D Data in Food Composition Tables

Development and Validation of the Brief Folate-Specific Food Frequency Questionnaire for Young Women’s Diet Assessment

Assessing Iodine Status in Frontline Healthcare

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