FOOD PREDICTORS OF PLASMA BETA-CAROTENE AND ALPHA-TOCOPHEROL: VALIDATION OF A FOOD FREQUENCY QUESTIONNAIRE

1990 ◽  
Vol 131 (5) ◽  
pp. 864-876 ◽  
Author(s):  
ISABELLE ROMIEU ◽  
MEIR J. STAMPFER ◽  
W. SCOTT STRYKER ◽  
MAURICIO HERNANDEZ ◽  
LAWRENCE KAPLAN ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Beta Carotene ◽  
Alpha Tocopherol ◽  
Food Frequency

Development, validity and reproducibility of a dish-based semi-quantitative food frequency questionnaire in Iran

2021 ◽  
pp. 1-10
Author(s):  
Samaneh Sadat Ayoubi ◽  
Mohsen Nematy ◽  
Maryam Amini ◽  
Habibollah Esmaily ◽  
Sara Movahed ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Food Frequency Questionnaire ◽  
Adult Population ◽  
Intraclass Correlation ◽  
Alpha Tocopherol ◽  
Food Record ◽  
Serum Retinol ◽  
Food Frequency ◽  
Food Items ◽  
Urinary Potassium

BACKGROUND: The food frequency questionnaire (FFQ) is the method of choice for dietary assessment in epidemiological studies. FFQs focusing on mixed-dishes and simple food items are useful where mixed-dishes are an essential part of food consumption. OBJECTIVE: Regarding the fact that the nature of the Iranian diet is mixed-dish, the present study aimed to design and assess the validity and reproducibility of a dish-based semi-quantitative FFQ in the Iranian adult population. METHODS: A list of 302 food items was collected from four geographical areas around Iran. The validation study was conducted on 97 healthy adults. The FFQ was introduced at the beginning of the study and 10 months after; two three-day food records were collected during the study. Also, biomarkers including 24-hour urinary potassium and nitrogen, serum retinol, and alpha-tocopherol were measured. RESULTS: A 142-food-item FFQ was concluded. The correlation coefficient between the second FFQ and the second three-day food record ranged from 0.225 to 0.323 for macronutrients and 0.128 to 0.476 for micronutrients. The percentile agreements (same or adjacent quartile) between the two methods were more than 60%for all nutrients. The intraclass correlation coefficient between FFQs (except for vitamin E) ranged from 0.363 to 0.578. The correlation coefficient between the second FFQ and the second biomarker assessment was 0.241 for protein.

scholarly journals Evaluation of a Food Frequency Questionnaire with Weighed Records, Fatty Acids, and Alpha-Tocopherol in Adipose Tissue and Serum

1999 ◽  
Vol 150 (1) ◽  
pp. 75-87 ◽  
Author(s):  
L. F. Andersen ◽  
K. Solvoll ◽  
L. R. K. Johansson ◽  
I. Salminen ◽  
A. Aro ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Adipose Tissue ◽  
Food Frequency Questionnaire ◽  
Alpha Tocopherol ◽  
Food Frequency

scholarly journals Reproducibility and validity of a quantitative food-frequency questionnaire among Jamaicans of African origin

2001 ◽  
Vol 4 (5) ◽  
pp. 971-980 ◽  
Author(s):  
M Jackson ◽  
S Walker ◽  
J Cade ◽  
T Forrester ◽  
JK Cruickshank ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Correlation Coefficients ◽  
Reference Method ◽  
Beta Carotene ◽  
Moderate Activity ◽  
Activity Levels ◽  
African Origin ◽  
Food Frequency ◽  
Cross Classification

AbstractBackground:An interviewer-administered quantitative food-frequency questionnaire (FFQ) was developed to determine the energy and nutrient intakes of adult Jamaicans of African origin as part of a study of the epidemiology of diabetes and hypertension.Methods:Reproducibility of the questionnaire was investigated in 123 participants aged 25–74 years. The relative validity of the FFQ was assessed against twelve 24-hour recalls administered over 12 months in 73 of the participants. In addition, energy intakes (EI) were compared with estimated basal metabolic rates (BMR).Results:Reproducibility correlation coefficients (Pearson and intraclass) varied between 0.42 for retinol and 0.71 for carbohydrate, with most values falling between 0.50 and 0.60. When compared with repeated 24-hour recalls, the FFQ estimated slightly higher energy (mean 6%) and macronutrient intakes (mean 2–14%), and was within 5% when expressed as a percentage of energy intake. Micronutrients were higher by 1.19 (calcium) to 1.61 times (vitamin C). Unadjusted correlations between the FFQ and the reference method ranged from 0.20 for beta-carotene to 0.86 for alcohol. Cross-classification of nutrients into quartiles showed that 46–48% of participants in the lowest and highest quartiles were jointly classified by both methods. Misclassifications were low for most nutrients with one or two persons misclassified at the extreme quartiles. EI/BMR ratios suggested light to moderate activity levels appropriate for an urban population in a developing country.Conclusions:The FFQ showed reasonable reproducibility and validity and is suitable for estimating the habitual intakes of energy and macronutrients, but was poor for some micronutrients (retinol and beta-carotene).

Agreement between a brief food frequency questionnaire and diet records using two statistical methods

2001 ◽  
Vol 4 (2) ◽  
pp. 255-264 ◽  
Author(s):  
GL Ambrosini ◽  
NH de Klerk ◽  
AW Musk ◽  
D Mackerras
Keyword(s):  
Food Frequency Questionnaire ◽  
Asbestos Exposure ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Beta Carotene ◽  
Cross Sectional Study ◽  
Limits Of Agreement ◽  
Cross Sectional ◽  
Food Frequency ◽  
Diet Records

AbstractObjectiveTo compare intra- and inter-method reliability of a semi-quantitative food frequency questionnaire (FFQ) designed specifically to measure beta carotene (BC) and retinol intake, using two methods – the limits of agreement (LOA) and the correlation coefficient.DesignA cross-sectional study of dietary intake.SettingA randomized trial of vitamin A supplements in 2769 subjects with past asbestos exposure.SubjectsData from 57 men and 26 women, aged 28–72 years, living in Western Australia.MethodsThe FFQ was administered at baseline (FFQ1) and repeated 1 year later (FFQ2). Four 1-week diet records (DRs) were completed during the year.ResultsMean agreement between FFQ2 and FFQ1 was 120% for BC and 98% for retinol. LOA were 47–306% and 21–459%, respectively. Mean agreement between FFQ2 and the DR was 149% for BC and 63% for retinol; LOA were 50–447% and 11–349%, respectively. Mean agreement and LOA varied across energy intakes. Between the DR and FFQ2, correlation coefficients were 0.36 for BC and 0.51 for retinol. These varied considerably across age, gender and energy intakes and were not in accordance with limits of agreement findings.ConclusionAlthough correlation coefficients were positive and significant, there was less than ideal intra-method and inter-method reliability shown by the limits of agreement method. Bias was uneven across the range of intakes, the LOA were wide and, compared with the DR, the FFQ significantly over-estimated BC and under-estimated retinol. This shows the limitations of calculating correlation coefficients alone, for assessing reliability and validity.

Evaluation of a food frequency questionnaire to determine dietary intake in a large cohort: The SAPALDIA study

2012 ◽  
Vol 37 (03) ◽  
Author(s):  
N Steinemann ◽  
IU Leonhäuser ◽  
N Probst-Hensch ◽  
L Grize ◽  
C Brombach
Keyword(s):  
Dietary Intake ◽  
Food Frequency Questionnaire ◽  
Large Cohort ◽  
Food Frequency

Cultural Relevance of a Fruit and Vegetable Food Frequency Questionnaire

2005 ◽  
Vol 66 (4) ◽  
pp. 231-236 ◽  
Author(s):  
Judy Paisley ◽  
Marlene Greenberg ◽  
Jess Haines
Keyword(s):  
Food Frequency Questionnaire ◽  
Dietary Assessment ◽  
Cultural Relevance ◽  
Assessment Tools ◽  
Comparative Approach ◽  
Fruit And Vegetable ◽  
Food Frequency ◽  
Research And Practice ◽  
Vegetable Food ◽  
Nutrition Research

Purpose: Canada’s multicultural population poses challenges for culturally competent nutrition research and practice. In this qualitative study, the cultural relevance of a widely used semiquantitative fruit and vegetable food frequency questionnaire (FFQ) was examined among convenience samples of adults from Toronto’s Cantonese-, Mandarin-, Portuguese-, and Vietnamesespeaking communities. Methods: Eighty-nine participants were recruited through community-based organizations, programs, and advertisements to participate in semi-structured interviews moderated in their native language. Data from the interviews were translated into English and transcribed for analysis using the constant comparative approach. Results: Four main themes emerged from the analysis: the cultural relevance of the foods listed on the FFQ, words with multiple meanings, the need for culturally appropriate portionsize prompts, and the telephone survey as a Western concept. Conclusions: This research highlights the importance of investing resources to develop culturally relevant dietary assessment tools that ensure dietary assessment accuracy and, more important, reduce ethnocentric biases in food and nutrition research and practice. The transferability of findings must be established through further research.

Faktor Gizi dan Prestasi Belajar Siswa Sekolah Menengah Kejuruan

2020 ◽  
Vol 4 (1) ◽  
pp. 69-78
Author(s):  
Nurlaili Handayani ◽  
Muhammad Dawam Jamil ◽  
Ika Ratna Palupi
Keyword(s):  
Vitamin C ◽  
Food Frequency Questionnaire ◽  
Chi Square ◽  
Cross Sectional ◽  
Food Frequency

Faktor gizi merupakan salah satu faktor yang memengaruhi kemampuan belajar anak, termasuk pada siswa Sekolah Menengah Kejuruan (SMK) yang berada pada usia remaja dan disiapkan sebagai tenaga terampil sesuai bidang keahliannya. Penelitian ini bertujuan menganalisis hubungan faktor gizi yang meliputi asupan energi dan zat gizi (karbohidrat, protein, lemak, zat besi, vitamin C, dan zink), kebiasaan sarapan, dan status gizi dengan prestasi belajar pada siswa SMK di Sleman, DIY. Penelitian ini merupakan penelitian observasional cross sectional pada 100 siswa kejuruan dengan jurusan bidang teknik kendaraan ringan yang berasal dari SMKN 2 Depok, SMKN 1 Seyegan dan SMK Muhammadiyah Prambanan. Pengumpulan data menggunakan kuesioner karakteristik individu dan semi kuantitatif Food Frequency Questionnaire (SQ-FFQ). Status gizi ditentukan dengan indikator IMT/U dan prestasi belajar diukur dari nilai ujian praktik mata pelajaran kejuruan. Analisis data menggunakan uji chi-square. Hasil penelitian menunjukkan subjek memiliki asupan energi defisit (68%), protein defisit (40%), lemak defisit (57%), karbohidrat defisit (65%), vitamin C defisit (27%), zat besi defisit (59%), zink defisit (93%), status gizi normal (67%), dan kebiasaan sarapan jarang (35%). Tidak terdapat hubungan antara tingkat asupan energi dan zat gizi serta status gizi dengan prestasi belajar (p>0,05) tetapi ada hubungan signifikan antara kebiasaan sarapan (p=0,010) serta pekerjaan ayah dan ibu (p=0,030 dan p=0,031) dengan prestasi belajar. Disimpulkan bahwa kebiasaan sarapan merupakan faktor gizi yang berhubungan dengan prestasi belajar siswa SMK.

scholarly journals Development and Relative Validity of a Semiquantitative Food Frequency Questionnaire to Estimate Dietary Intake among a Multi-Ethnic Population in the Malaysian Cohort Project

Nutrients ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1163
Author(s):  
Suzana Shahar ◽  
Mohd Razif Shahril ◽  
Noraidatulakma Abdullah ◽  
Boekhtiar Borhanuddin ◽  
Mohd Arman Kamaruddin ◽  
...  
Keyword(s):  
Vitamin C ◽  
Correlation Coefficient ◽  
Food Frequency Questionnaire ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Weighted Kappa ◽  
Dietary Intakes ◽  
Food Frequency ◽  
Relative Validity ◽  
Spearman’S Correlation

Measuring dietary intakes in a multi-ethnic and multicultural setting, such as Malaysia, remains a challenge due to its diversity. This study aims to develop and evaluate the relative validity of an interviewer-administered food frequency questionnaire (FFQ) in assessing the habitual dietary exposure of The Malaysian Cohort (TMC) participants. We developed a nutrient database (with 203 items) based on various food consumption tables, and 803 participants were involved in this study. The output of the FFQ was then validated against three-day 24-h dietary recalls (n = 64). We assessed the relative validity and its agreement using various methods, such as Spearman’s correlation, weighed Kappa, intraclass correlation coefficient (ICC), and Bland–Altman analysis. Spearman’s correlation coefficient ranged from 0.24 (vitamin C) to 0.46 (carbohydrate), and almost all nutrients had correlation coefficients above 0.3, except for vitamin C and sodium. Intraclass correlation coefficients ranged from −0.01 (calcium) to 0.59 (carbohydrates), and weighted Kappa exceeded 0.4 for 50% of nutrients. In short, TMC’s FFQ appears to have good relative validity for the assessment of nutrient intake among its participants, as compared to the three-day 24-h dietary recalls. However, estimates for iron, vitamin A, and vitamin C should be interpreted with caution.

Validity and reproducibility of a semi‐quantitative food frequency questionnaire for Iranian adults

2021 ◽  
Author(s):  
Noushin Mohammadifard ◽  
Fahimeh Haghighatdust ◽  
Roya Kelishadi ◽  
Ahmad Bahonar ◽  
Minoo Dianatkhah ◽  
...  
Keyword(s):  
Food Frequency Questionnaire ◽  
Food Frequency
Sign in / Sign up

Export Citation Format

Share Document