[Home ] [Archive]   [ فارسی ]  
:: Main :: About :: Current Issue :: Archive :: Search :: Submit :: Contact ::
:: Volume 17, Issue 2 (Summer 2022) ::
Iranian J Nutr Sci Food Technol 2022, 17(2): 51-63 Back to browse issues page
Design and Validation of a Questionnaire to Assess Determinants of the Functional Dairy Product Consumption and Preferences in Adults In Iran
M Bazhan1 , N Kalantari1 , N Keshavarz-Mohammadi * 2, H Alavi Majd3
1- Dept. of Community Nutrition, Faculty of Nutrition Sciences and Food Technology, National Nutrition and Food Technology Research Institute, Shahid Beheshti University of Medical Sciences, Tehran, Iran
2- Prof, Dept. of Biostatistics, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran , n_keshavars@yahoo.com
3- Prof, Dept. of Biostatistics, School of Allied Medical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran
Abstract:   (205 Views)
Background and Objectives: The production of functional foods to prevent and manage diet-related chronic diseases is rising worldwide, including in Iran. It is essential to understand factors affecting the acceptance of functional foods. The present study was conducted to design a valid reliable questionnaire for assessing determinants of functional dairy product consumption and preferences in adults in Tehran, the capital city of Iran.
 Materials & Methods: This study was a mixed-method (qualitative and quantitative) study. The questionnaire items were derived from the qualitative study results mixed with items obtained from the literature. Then, psychometric characteristics of the instrument, including content validity, face validity, internal consistency, and stability, were assessed. Cronbach's alpha, intra-class correlation coefficient, and kappa were assessed using SPSS Software v.21.
Results: The primary question pool included 52 questions, which decreased to 33 after assessing the content validity index and ratio. The instrument's overall scale content validity index was 0.96. The internal consistency reliability of the attitude scale was calculated as 0.87. The kappa coefficient values for familiarity/unfamiliarity with functional dairy products and their consumption/non-consumption ranged 0.61–1. Intraclass correlation coefficient values ranged 0.69–1 for the frequency of functional dairy consumption, 0.73–0.86 for the degree of importance of product characteristics in affecting consumer choices, and 0.83–0.92 for the consumer views for the information on functional dairy products. The intraclass correlation coefficient for the attitude towards these products was 0.92, indicating the high test-retest reliability of the instrument.
Conclusion: The questionnaire designed in this study was a valid reliable instrument that could assess various factors affecting the consumption of functional dairy products and consumer preferences concerning these products.
Keywords: Functional dairy products, Reliability, Validity, Determinants of consumption, Preferences, Adults
Full-Text [PDF 879 kb]   (38 Downloads)    
Article type: Research | Subject: nutrition
Received: 2021/07/5 | Accepted: 2022/01/25 | Published: 2022/07/5
attachment [PDF 387 KB]  (2 Download)
Send email to the article author

Add your comments about this article
Your username or Email:

CAPTCHA


XML   Persian Abstract   Print


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

Bazhan M, Kalantari N, Keshavarz-Mohammadi N, Alavi Majd H. Design and Validation of a Questionnaire to Assess Determinants of the Functional Dairy Product Consumption and Preferences in Adults In Iran. Iranian J Nutr Sci Food Technol. 2022; 17 (2) :51-63
URL: http://nsft.sbmu.ac.ir/article-1-3314-en.html


Rights and permissions
Creative Commons License This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Volume 17, Issue 2 (Summer 2022) Back to browse issues page
Iranian Journal of  Nutrition Sciences & Food  Technology
Persian site map - English site map - Created in 0.04 seconds with 30 queries by YEKTAWEB 4419