TY  - JOUR
AU  - Zeković, Milica
AU  - Đekić-Ivanković, Marija
AU  - Nikolić, Marina
AU  - Gurinović, Mirjana
AU  - Krajnović, Dušanka
AU  - Glibetić, Marija
PY  - 2017
UR  - https://farfar.pharmacy.bg.ac.rs/handle/123456789/2902
AB  - 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.
PB  - MDPI, Basel
T2  - Nutrients
T1  - 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
VL  - 9
IS  - 2
DO  - 10.3390/nu9020128
ER  - 

@article{
author = "Zeković, Milica and Đekić-Ivanković, Marija and Nikolić, Marina and Gurinović, Mirjana and Krajnović, Dušanka and Glibetić, Marija",
year = "2017",
abstract = "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.",
publisher = "MDPI, Basel",
journal = "Nutrients",
title = "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",
volume = "9",
number = "2",
doi = "10.3390/nu9020128"
}

Zeković, M., Đekić-Ivanković, M., Nikolić, M., Gurinović, M., Krajnović, D.,& Glibetić, M.. (2017). 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. in Nutrients
MDPI, Basel., 9(2).
https://doi.org/10.3390/nu9020128

Zeković M, Đekić-Ivanković M, Nikolić M, Gurinović M, Krajnović D, Glibetić M. 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. in Nutrients. 2017;9(2).
doi:10.3390/nu9020128 .

Zeković, Milica, Đekić-Ivanković, Marija, Nikolić, Marina, Gurinović, Mirjana, Krajnović, Dušanka, Glibetić, Marija, "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" in Nutrients, 9, no. 2 (2017),
https://doi.org/10.3390/nu9020128 . .