Vol. 12, Special Issue 7 (2023)

Author(s):
Dr. Nidhi Joshi, Dr. Rita Singh Raghuvanshi, Dr. Anuradha Dutta, Dr. Sanjeev Agarwal and Dr. Anil Kumar

Abstract:
The present study aimed to develop a valid and reliable Sustainable Diet Questionnaire (SUSDQ) to measure the attitude and perceptions of Indian adults. A comprehensive literature review was conducted to develop the initial version of the questionnaire. An online cross-sectional survey was conducted among Indian adults aged 18 years and above based on a convenience sampling technique. Seventy-four subjects were recruited for face validation, test-retest, and internal consistency reliability. Nine experts were nominated for content validation. The construct, discriminant, and predictive validity assessment sample size were 1844. The questionnaire measured knowledge, attitude, concerns, motives, practices, opinions, barriers, and drivers. Respondents were asked to rate the items based on importance, relevance, and clarity. Item impact score, face & content validity index, Cronbach’s alpha, and Cohen’s kappa were calculated. Construct validity was evaluated through exploratory factor analysis (EFA). Discriminant and predictive validity were assessed using Pearson’s correlations and multivariate linear regression. The significance level was fixed at a P-value < 0.05. EFA highlighted a 19-item, 17-factor model. The SUSDQ demonstrated good internal consistency and discriminant and predictive validity. The study developed a valid and reliable multidimensional questionnaire, which researchers can use to understand the attitude and perceptions of Indian adults about sustainable diets.