[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Contact ::
:: Volume 13, Issue 1 (5-2011) ::
2011, 13(1): 58-66 Back to browse issues page
Validity and Reproducibility of a Food Frequency Questionnaire for Assessing Dietary Patterns in 18-45 Years Old Women Supported by Health Care in the North and East of Tehran
Bahram Rashidkhani Dr, Mahboubeh Shaneshin *, Rana Rafat , Nasrin Omidvar Dr, Anahita Hoshyarrad , Arezoo Rezazadeh , Atena Ramezani , Zohreh Hosseini , Maryam Behruz
MSc , MSHANESHIN@YAHOO.COM
Abstract:   (33070 Views)

Introduction: Defining dietary patterns by factor analysis is an alternative approach to dietary assessment. Our aim was to assess both the validity and reproducibility of major dietary patterns, based on data from obtained using a food frequency questionnaire (FFQ) among Tehranian women. Materials and Methods: Using random sampling of registries, women aged 18 to 45 years were selected. The first food frequency questionnaire (FFQ1) was completed by trained interviewers. We asked our subjects to record their diet, 2 days per month, during 1 year. At the end of the year, a second FFQ (FFQ2) was again completed by interviewers. By conducting factor analysis, dietary patterns were identified. Results: Two factors were detected in the 3 sets of data. For assessing reproducibility, the Pearson correlation was assigned to detect the correlations between factor scores measured in FFQ1 and FFQ2.  The reliability correlations for the factor scores between the 2 FFQs ranged from -0.05 to 0.11, for the 2 factors. The validity correlations for the factor scores between the FFQ1 and dietary records (ranged from -0.16 to 0.29, for the 2 factors) and between FFQ2 and dietary record (ranged from 0.02 to 0.11 for the 2 factors) were detected. Conclusion: Our results indicate that identification of dietary patterns, using a food frequency questionnaire, in this group was not a reproducible or valid method.

Keywords: Dietary Patterns, Reproducibility, Validity, Food-Frequency Questionnaire, Factor Analysis
Full-Text [PDF 307 kb]   (2807 Downloads)    
Type of Study: Original | Subject: Nutrition
Received: 2010/07/1
Add your comments about this article
Your username or Email:

Write the security code in the box >



XML   Persian Abstract   Print


Download citation:
BibTeX | RIS | EndNote | Medlars | ProCite | Reference Manager | RefWorks
Send citation to:

rashidkhani B, shaneshin M, Rafat R, Omidvar N, Hoshyarrad A, Rezazadeh A, et al . Validity and Reproducibility of a Food Frequency Questionnaire for Assessing Dietary Patterns in 18-45 Years Old Women Supported by Health Care in the North and East of Tehran. Iranian Journal of Endocrinology and Metabolism. 2011; 13 (1) :58-66
URL: http://ijem.sbmu.ac.ir/article-1-989-en.html
Volume 13, Issue 1 (5-2011) Back to browse issues page
مجله ی غدد درون‌ریز و متابولیسم ایران، دو ماهنامه  پژوهشی مرکز تحقیقات غدد درون‌ریز و متابولیسم، Iranian Journal of Endocrinology and Metabolism
Persian site map - English site map - Created in 0.056 seconds with 820 queries by yektaweb 3531