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Validity of the Food Frequency Questionnaire Assessing the Folate Intake in Women of Reproductive Age Living in a Country without Food Fortification: Application of the Method of Triads

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Аутори
Zeković, Milica
Đekić-Ivanković, Marija
Nikolić, Marina
Gurinović, Mirjana
Krajnović, Dušanka
Glibetić, Marija
Чланак у часопису (Објављена верзија)
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Апстракт
The study aimed to examine the external validity of the Folate Food Frequency Questionnaire (F-FFQ) designed for assessing the folate intake in Serbian women of reproductive age. The F-FFQ was tested against repeated 24 h dietary recalls and correspondent nutritional biomarkers (red blood cells (RBC) and serum folate concentrations) using the method of triads. In a cross sectional study, 503 women aged 18-49 years completed dietary questionnaires and representative validation subsample (n = 50) provided fasting blood samples for biomarker analyses. Correlation coefficients were calculated between each of the dietary methods and three pair-wise correlations were applied for the calculation of validity coefficients. Correlation coefficients observed between F-FFQ and three 24 h recalls were r = 0.56 (p lt 0.001) and r = 0.57 ( p lt 0.001) for total sample and validation group, respectively. Bland-Altman plot and cross-classification analyses indicated good agreement between methods. ...High validity coefficients were determined between the true intake (I) and dietary assessment methods, F-FFQ (Q) and 24 h dietary recalls (R) (rho QI(rbc) = 0.871 and rho QI(ser) = 0.814; rho RIrbc = 0.652 and rho RIser = 0.698), and moderate ones for biomarkers (B) (rho BIrbc = 0.428 and rho BIser = 0.421). The F-FFQ is valid instrument for the assessment of dietary folate intake in women living in Serbia, a country without mandatory folic acid food fortification.

Извор:
Nutrients, 2017, 9, 2
Издавач:
  • MDPI, Basel
Пројекти:
  • Биолошки механизми, нутритивни унос и статус полинезасићених масних киселина и фолата: Унапређење исхране у Србији (RS-41030)

DOI: 10.3390/nu9020128

ISSN: 2072-6643

PubMed: 28208817

WoS: 000397023100041

Scopus: 2-s2.0-85012880765
[ Google Scholar ]
9
7
URI
http://farfar.pharmacy.bg.ac.rs/handle/123456789/2902
Колекције
  • Radovi istraživača / Researchers’ publications
Институција
Pharmacy

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