Developing and validating food choice determinants questionnaire: An instrument for exploring food choice determinants in Iran

Arezoo Haghighian Roudsari; AbouAli Vedadhir; Parisa Amiri; Naser Kalantari; Nasrin Omidvar; Hassan Eini-Zinab

doi:10.4103/ijpvm.IJPVM_250_19

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ORIGINAL ARTICLE

Year : 2020 | Volume : 11 | Issue : 1 | Page : 141

Developing and validating food choice determinants questionnaire: An instrument for exploring food choice determinants in Iran

Arezoo Haghighian Roudsari¹, AbouAli Vedadhir², Parisa Amiri³, Naser Kalantari¹, Nasrin Omidvar¹, Hassan Eini-Zinab¹
¹ Department of Community Nutrition, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
² Department of Anthropology, Faculty of Social Sciences, University of Tehran, Tehran, Iran; Department of Population Health Sciences, University of Bristol, Bristol, UK
³ Research Center for Social Determinants of Health, Research Institute of Endocrine Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran

Correspondence Address:
Naser Kalantari
No. 7, Hafezi (West Arghavan) St., Farahzadi Blvd., Qods Town, Zip Code: 1981619573, P.O.Box: 19395 – 4741, Tehran
Iran

Source of Support: None, Conflict of Interest: None

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DOI: 10.4103/ijpvm.IJPVM_250_19

Background: This study was carried out to design and validate a questionnaire to measure the majority of factors influencing food choices among adults in Iran. Methods: A sequential exploratory mixed-method approach was applied to develop the initial item pool of the Food Choice Determinants Questionnaire (FCDQ) starting with a qualitative study to explore the food choice dimensions and its components. Designing the initial questionnaire using these dimensions and the 36-item Food Choice Questionnaire (FCQ) was then performed. The face, content, and construct validity were also assessed. The construct validity of the questionnaire was assessed using the exploratory factor analysis (EFA). Cronbach's alpha was applied for each main theme to examine the internal consistency. Results: After content and face validity process, a 60-item FCDQ was developed with total items' content validity index (CVI) of 0.69 indicating a reasonable level. The Cronbach's alpha coefficients for each of the six constructs in the scale have shown satisfactory internal consistency. Conclusions: This instrument is valid and reliable to measure food choice determinants in adults and could be applied to design interventions aiming to better food choice.

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