Research on the construction of public food safety risk perception scale
10.3969/j.issn.1006-2483.2026.05.006
- VernacularTitle:公众食品安全风险认知量表构建
- Author:
Chengcheng WANG
1
;
Shaojie PENG
1
Author Information
1. Shanghai Market Supervision Administration Information Application Research Center, Shanghai 200030, China
- Publication Type:Journal Article
- Keywords:
Food safety;
Risk perception;
Scale construction;
Stratified sampling;
Factor analysis;
Reliability;
Validity
- From:
Journal of Public Health and Preventive Medicine
2026;37(5):26-30
- CountryChina
- Language:Chinese
-
Abstract:
Objective To construct a public food safety risk perception scale and evaluate its reliability and validity, and to provide a measurement basis for conducting systematic and continuous public food safety risk perception surveys. Methods Based on literature research and interviews, a preliminary scale framework was constructed and scale items were proposed. Through online surveys, 1000 valid questionnaires were collected from 16 districts in Shanghai. Six statistical item analysis methods, including frequency analysis method, coefficient of variation method, independent samples t-test method, correlation coefficient method, Cronbach's alpha method, and exploratory factor analysis, were used to screen the initial scale items. Cronbach's alpha coefficient and split-half reliability were used to test the reliability of the final scale, and exploratory factor analysis and confirmatory factor analysis were used to evaluate the structural validity of the final scale. Results The selection rate for each item was below 80%, and the coefficients of variations were all greater than 0.2. T-test analysis showed that the difference was statistically significant (P<0.05), and the correlation coefficients (r) ranged from 0.169 to 0.762. After item screening and exploratory factor analysis, combined with professional interpretation, the final scale retained 5 common factors and 18 items, with a cumulative variance contribution rate of 61.16 %. Following reliability testing, the Cronbach’s α of the final scale was 0.892 and the split-half reliability was 0.771. Following validity testing and model correction, the results showed that the chi-square degree of freedom ratio of the model was 4.752, the root mean square error RMSEA was 0.069, and all test quantities were within an acceptable range. Conclusion The constructed public food safety risk perception scale has good reliability and validity, and can provide a measurement tool for subsequent public food safety risk perception surveys.
