To our knowledge, this research is the pioneering study that investigates disparities in health risk behaviors across different zip codes within the United States through the application of finite mixture modeling. Finite mixture modeling, a statistical approach capable of identifying distinct subpopulations, provides a novel methodological framework for our analysis.
Our study did not find a binge drinking disparity against the Black population as is reflected in some studies [17] nor against the population without post-secondary education. Instead, it supported disparities against the White population and the population holding post-secondary degrees [18]. Also, our findings are a deviation from the research claiming the impact of poverty on higher prevalence of binge drinking [19] or those claiming similar patterns of drinking for races [20]. In addition, our findings exhibit a higher binge drinking in urban areas compared to rural areas. Also, we suggest a higher frequency of binge drinking in less socioeconomically disadvantaged zip codes, which is inconsistent with several research in this area [21].
Our study revealed distinct disparities in smoking behaviors across various racial groups. Despite differences observed between the Black and Indian/Alaskan populations compared to the White population [22], the White population still exhibited less favorable smoking behavior in comparison to the Asian population [23].
Our research indicates the existence of sleep deprivation disparity against the Black population [24]. Surprisingly, Sleep deprivation was found to be the only risk behavior positively associated with only the Black population. Additionally, the analysis revealed that rural zip codes experienced sleep deprivation more than urban areas and that poverty still plays a prominent role in the prevalence of this health risk behavior [25].
In our research, we observed a surprising disparity in physical inactivity among the Black population, and we observed a positive association between physical inactivity and poverty. Our finding supports the presence of a significant historical disparity against the Black population, as reported in other studies [26–28].
Furthermore, surprisingly, among the four races analyzed, the Black population was the only race that experienced disparities in three out of four health risk behaviors. In contrast, the Asian population exhibited a negative association with all four. Therefore, the Asian population is considered to have more favorable health risk behaviors than the other races being studied. In addition, poverty and rural status had positive associations with all three except for binge drinking, and surprisingly, post-secondary education had the exact opposite pattern.
Our study findings reveal that at least one sub-population exists within the US that has the highest prevalence of health risk behaviors, including smoking, sleep deprivation, and physical inactivity, compared to the other groups, as well as the higher than the total population’s poverty prevalence, highest uninsurance prevalence, and lowest prevalence of post-secondary education among all clusters. Consequently, these findings underscore the urgent need for targeted interventions to address the fourfold challenge of poverty, lack of insurance, low education levels, and the prevalence of health risk behaviors that are all considered the main risk factors for diseases such as cancer, cardiovascular diseases, and diabetes [29–31] and these chronic diseases have burdensome out-of-pocket costs, especially for economically disadvantaged households [32].
Our research introduced a novel approach by facilitating the identification of areas that require urgent, targeted interventions, which stands as a significant applied innovation of our work. We have gained precise insights into which subpopulations necessitate prioritized assistance. This methodological innovation not only enhances the precision of public health strategies but also ensures that resources are allocated effectively. Consequently, policymakers and public health officials can use our research to pinpoint where to begin interventions, thereby optimizing the impact of health programs and reducing health disparities in the most affected communities.