Factor and Reliability Analysis of Disaster Preparedness Instruments
Keywords:
factor analysis, reliability analysis, disaster preparednessAbstract
The purpose of the paper was to evaluate the psychometric properties of the Disaster Preparedness Survey Questionnaire to measure and examine the disaster preparedness in the province of Zamboanga del Norte. The specific validation processes included the content and face validity, construct validity using factor analysis, reliability and internal consistency using test-retest reliability and Cronbach’s alpha correlation coefficient. The exploratory factor analysis revealed three factors, namely: disaster knowledge, disaster awareness, and disaster preparedness. The items on the questionnaire revealed factor loadings ≥ 0.5. Reliability processes also revealed high correlation and consistency of the responses. Moreover, test-retest statistic examination revealed stability of the responses at two time points apart. The final questionnaire which consisted of 150 items was found valid and reliable.
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