Exploratory Analysis on Demographic and Lifestyle Risk Factors and Their Associations With OFD Use
OFD
REGRESSION, EVENTS, CHRONIC DISEASE
A zero-inflated negative binomial regression model was built to analyze associations between participant demographic characteristics, lifestyle chronic disease risk factors, and number of OFD events in a week. Incidence rate ratios were the effect size from this model used to indicate how often OFD events occurred over the study period in relation to participants’ demographic characteristics and lifestyle chronic disease risk factors. A zero-inflated model was deemed appropriate as our data had an excess of “zeros” for the number of OFD events recorded by the participants. This model was adjusted for age, gender, and socioeconomic status as indicated by the IRSAD quintile. An influential point, which is an outlier that affects the slope of the regression, was identified through a bar plot of the Cook distance and subsequently removed as it had a significant impact on the coefficients.