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The purpose of this research was to evaluate the factors and internal consistency of the eating
behavior questionnaire in patients with coronary artery disease. This secondary analysis of 268 patients
with coronary artery disease was analyzed for validation. Exploratory factor analyses (EFA) was
deployed with principal component analysis and Varimax method for factor extraction and rotation
respectively. Internal consistency was analyzed using Cronbach’s alpha coefficient.
Results indicated appropriate values for sampling adequacy (KMO value of .86 and MSA value
for each item of .604 - .908) and Bartlett’s test of Sphericity (p < .001), and found two dimensions
of the eating behavior questionnaire: healthy eating behavior and unhealthy eating behavior. The
dimensions consisted of 6 items and 11 items, respectively, which yielded factor loadings of .42 - .85
and .42 - .76 respectively. The total variance accounted for was 47.50%. Cronbach’s alpha coefficients
were .87 for the whole questionnaire, and .72 and .76 for the two dimensions. The results suggest that
the eating behavior questionnaire could be appropriately used to assess eating behaviors in persons
who are at risk of and/or diagnosed with cardiovascular disease.
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