Development and validation of a questionnaire to examine determinants of consumer intentions to purchase organic food.
Development
Organic food
Purchase intention
Questionnaire
Validation
Journal
BMC nutrition
ISSN: 2055-0928
Titre abrégé: BMC Nutr
Pays: England
ID NLM: 101672434
Informations de publication
Date de publication:
26 Jun 2023
26 Jun 2023
Historique:
received:
27
06
2022
accepted:
19
06
2023
medline:
27
6
2023
pubmed:
27
6
2023
entrez:
26
6
2023
Statut:
epublish
Résumé
Organic farming is a relatively new concept in developing countries compared to developed countries. Understanding the factors affecting consumers' willingness to pay for organic foods is critical to increasing the production of these products. This study aimed to develop and validate a Persian version of the questionnaire for assessing determinants of organic food purchase intention among adults in Tehran, the capital of Iran. The study was conducted in a two-phased standardized methodology in 2019. During Phase 1, a draft questionnaire was developed based on a comprehensive literature review. In phase 2, validation of the instrument was performed. Participants included a multidisciplinary expert panel comprising 14 members to evaluate content validity, a sample of lay people to assess face validity (n = 20), internal consistency (n = 300), and test-retest reliability (n = 62). The internal consistency and test-retest reliability were measured using the intraclass correlation coefficient (ICC) and Cronbach's alpha. Forty-nine of 57 items had a CVR above 0.51 and were retained in the questionnaire. Three items were added to the questionnaire. The average CVI for the questionnaire was 0.97. Cronbach's α and ICC of the entire questionnaire were 0.86 and 0.93, respectively. Each phase of development progressively improved the questionnaire, resulting in a final 52-item questionnaire divided into 9 dimensions, including knowledge, attitude, subjective norms, health consciousness, environmental concerns, perceived convenience of purchase, perceived cost, sensory characteristics, and purchase intention. The developed questionnaire appears to be a valid and reliable instrument for examining determinants of consumer intentions to purchase organic food.
Sections du résumé
BACKGROUND
BACKGROUND
Organic farming is a relatively new concept in developing countries compared to developed countries. Understanding the factors affecting consumers' willingness to pay for organic foods is critical to increasing the production of these products. This study aimed to develop and validate a Persian version of the questionnaire for assessing determinants of organic food purchase intention among adults in Tehran, the capital of Iran.
METHODS
METHODS
The study was conducted in a two-phased standardized methodology in 2019. During Phase 1, a draft questionnaire was developed based on a comprehensive literature review. In phase 2, validation of the instrument was performed. Participants included a multidisciplinary expert panel comprising 14 members to evaluate content validity, a sample of lay people to assess face validity (n = 20), internal consistency (n = 300), and test-retest reliability (n = 62). The internal consistency and test-retest reliability were measured using the intraclass correlation coefficient (ICC) and Cronbach's alpha.
RESULTS
RESULTS
Forty-nine of 57 items had a CVR above 0.51 and were retained in the questionnaire. Three items were added to the questionnaire. The average CVI for the questionnaire was 0.97. Cronbach's α and ICC of the entire questionnaire were 0.86 and 0.93, respectively. Each phase of development progressively improved the questionnaire, resulting in a final 52-item questionnaire divided into 9 dimensions, including knowledge, attitude, subjective norms, health consciousness, environmental concerns, perceived convenience of purchase, perceived cost, sensory characteristics, and purchase intention.
CONCLUSIONS
CONCLUSIONS
The developed questionnaire appears to be a valid and reliable instrument for examining determinants of consumer intentions to purchase organic food.
Identifiants
pubmed: 37365648
doi: 10.1186/s40795-023-00731-y
pii: 10.1186/s40795-023-00731-y
pmc: PMC10291792
doi:
Types de publication
Journal Article
Langues
eng
Pagination
74Informations de copyright
© 2023. The Author(s).
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