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Indiana University-Purdue University Indianapolis (IUPUI) / The emergence and development of electronic health records have contributed to an abundance of patient data that can greatly be used and analyzed to promote health outcomes and even eliminate health disparities. However, challenges exist in the data received with factors such as data inconsistencies, accuracy issues, and unstructured formatting being evident. Furthermore, the current electronic health records and clinical information systems that are present do not contain the social determinants of health that may enhance our understanding of the characteristics and mechanisms of disease risk and transmission as well as health disparities research. Linkage to external population health databases to incorporate these social determinants of health is often necessary. This study provides an opportunity to identify and analyze health disparities using geographical information systems on two important sexually transmitted diseases in chlamydia and gonorrhea using Marion County, Indiana as the geographical location of interest. Population health data from the Social Assets and Vulnerabilities Indicators community information system and electronic health record data from the Indiana Network for Patient Care will be merged to measure the distribution and variability of greatest chlamydia and gonorrhea risk and to determine where the greatest areas of health disparities exist. A series of both statistical and spatial statistical methods such as a longitudinal measurement of health disparity through the Gini index, a hot-spot and cluster analysis, and a geographically weighted regression will be conducted in this study. The outcome and broader impact of this research will contribute to enhanced surveillance and increased effective strategies in identifying the level of health disparities for sexually transmitted diseases in vulnerable localities and high-risk communities. Additionally, the findings from this study will lead to improved standardization and accuracy in data collection to facilitate subsequent studies involving multiple disparate data sources. Finally, this study will likely introduce ideas for potential social determinants of health to be incorporated into electronic health records and clinical information systems.

Background: Oral health disparities exist in the USA. However, little is known of the relationship between oral health disparity and citizenship. The aims of this study were: (i) to describe the differences in self-rated oral health (SROH) between adult American citizens and non-citizens (>20 years of age); and (ii) to test whether factors such as frequency of dentist visits and socio-economic status (SES) are differently associated with SROH in these two groups. Methods: The data used in this study were drawn from the National Health and Nutrition Examination Survey conducted in 2011–2012. Weighted logistic regression models were used to detect the strengths of the association between a series of predictors and SROH. Results: More non-citizens (59.54%) than their citizen peers (26.24%) rated their oral health as fair/bad. All factors analysed in this study were differently associated with SROH based on citizenship. More specifically, natural characteristics, such as ethnicity and age, were significantly associated with SROH among non-citizens, and SES was significantly associated with American citizens. Among non-citizens, Hispanic, Non-Hispanic Black and Asian subjects were more likely than Non-Hispanic White subjects to report their oral health as being ‘good’. Family poverty level, education and the frequency of dentist visits were significantly associated with SROH among citizens. Conclusion: The findings of this study indicate that American immigrants report their oral health across most dimensions as being worse than do American citizens. Each explanatory factor may have a different strength of association with SROH in immigrants and citizens, which implies that different steps should be taken within these groups to reduce disparities in oral health.

Health disparities between the western, central and eastern regions of rural China, and the impact of national health improvement policies and programming were assessed. A total of 400 counties were randomly sampled. ANOVA and Logistic regression modeling were employed to estimate differences in health outcomes and determinants. Significant differences were found between the western, central and eastern rural regions in community infrastructure and health outcomes. From 2000 to 2010, health indicators in rural China were improved significantly, and the infant mortality rate (IMR), maternal mortality rate (MMR) and under 5 mortality rate (U5MR) had fallen by 62.79%, 71.74% and 61.92%, respectively. Central rural China had the greatest decrease in IMR (65.05%); whereas, western rural China had the greatest reduction in MMR (72.99%) but smallest reduction in U5MR (57.36%). Despite these improvements, Logistic regression analysis showed regional differences in key health outcome indicators (odds ratios): IMR (central: 2.13; western: 5.31), U5MR (central: 2.25; western: 5.69), MMR (central: 1.94; western: 3.31), and prevalence of infectious diseases (central: 1.62; western: 3.58). The community infrastructure and health outcomes of the western and central rural regions of China have been improved markedly during the first decade of the 21st century. However, health disparities still exist across the three regions. National efforts to increase per capita income, community empowerment and mobilization, community infrastructure, capacity of rural health facilities, and health literacy would be effective policy options to attain health equity.

Objectives: A community-based intervention is described that targets oral health self-care practices among Hispanic children in the United States and is being tested in an ongoing trial. Descriptive results of baseline oral health variables are presented. Methods: As of January 2013, 284 Hispanic children of ages 5-7 enrolled in the Healthy Families Study in Nashville, TN, USA. Families are randomized to one of two culturally appropriate interventions. Results: At baseline, 69.6 % of children brushed at least twice daily, and 40.6 % brushed before bed daily. One-third of parents did not know if their children's toothpaste contained fluoride. Conclusions: This intervention fills the need for community-based interventions to improve oral health self-care practices that are culturally appropriate in Hispanic families.

Purpose: Living in a rural region is associated with significant health disparities and increased medical costs. Vitamin D deficiency, which is increasingly common, is also associated with many adverse health outcomes. The purpose of this study was to determine whether rural-urban residence status of veterans was related to vitamin D levels, and to determine if this factor also influenced medical costs/service utilization. Additionally explored was whether vitamin D differences accounted for part of the association between area of residence and medical costs/service utilization. Methods: Medical records of 9,396 veterans from 6 Veterans Administration Medical Centers were reviewed for variables of interest including county of residence, vitamin D level, medical costs and service utilization, and background variables. Rurality status was classified as large metropolitan, urban, and rural. Findings: The 3 rurality status groups differed significantly in vitamin D levels, with the highest levels observed for urban residents, followed by rural residents, and the lowest for large metro residents. Compared with urban residents, large metro residents were 49% more likely, while rural residents were 20% more likely, to be vitamin D deficient. Both rural and large metro residents had higher medical costs, and they were significantly more likely to be hospitalized. Vitamin D levels explained a statistically significant amount of the relationship between rurality status and medical costs/service utilization. Conclusions: Vitamin D deficiency may be an additional health disparity experienced by both rural and inner-city veterans, and patients residing in these locations should be considered at increased risk for deficiency and routinely tested.

Objective: Vaccine hesitancy remains a significant public health challenge, and one that is socially patterned. This study examined whether the vaccine hesitancy effects of identifying as female, race–ethnicity, the number of children, educational attainment, and political conservatism were mediated by governmental conspiracy beliefs. Methods: Linear mediation models controlling for potential confounders were employed to analyze data from a national survey of adults (2019 Chapman University Survey of American Fears; n = 1,209). Results: Effects on vaccine hesitancy were significant and negative for educational attainment, and significant and positive for the other focal predictors. Governmental conspiracy beliefs significantly mediated each of these effects; the percent mediated was largest for Hispanic identity (79 percent), followed by female identification (69 percent), educational attainment (69 percent), number of children (55 percent), black identification (34 percent), and political conservatism (30 percent). Conclusion: This study underscores the importance of nonvaccine-related conspiracy beliefs for future interventions aimed at reducing sociodemographic disparities in vaccine hesitancy.

Immigrant clinicians are vital to population healthcare delivery and therefore population health. One in four physicians in the USA is foreign-born and notably represented in family and pediatric medicine—specialties charged with administering childhood/adolescent vaccines, such as human papillomavirus vaccine (HPVV). Our examination suggests there may be unique cultural and socialization factors that influence clinician HPVV recommendation practice; however, immigrant clinicians have not been adequately engaged within the national HPVV agenda. Given the volume and significance of immigrant clinicians, engagement of these clinicians, in both community and nation-wide efforts to increase HPVV, is a necessary step for improving and achieving the national health goal of optimizing HPVV for cancer prevention.

Objective: Short interpregnancy interval (IPI), <18 months between pregnancies, is a potential cause of adverse delivery and birth outcomes, and may be a particular issue among those with other risks. Our goal was to examine IPI and delivery/infant complications in Tennessee. Methods: Birth certificate/vital records data included 101,912 women with a previous delivery. IPI groups (<6, 6-12, 12-18, 18-60 months) were compared on outcomes. Results: Thirty-nine percent of the deliveries had IPI <18 months, 9% were <6 months, rates 11% and 27% higher than nationally. Women with IPI <18 months were younger, lower educated with lower income, had higher BMIs, and were more likely to be unmarried, smokers, and have begun prenatal care later (p <.001). In adjusted analyses, IPI <18 months predicted elevated risk for precipitous labor, low-birth weight, preterm delivery, NICU admission, and infant mortality, with effects strongest for IPI <6 months. Finally, risks related to IPI <6 months were substantially higher for the lowest income women. Conclusions: Rates of less than optimal IPI were high in this population already experiencing significant maternal-child health disparities, with short IPI a particular risk factor for poor out-comes for the most disadvantaged women, suggesting yet another precursor for adverse birth outcomes in those already most at risk.

Immigrant clinicians are vital to population healthcare delivery and therefore population health. One in four physicians in the United States are foreign-born and notably represented in family and pediatric medicine–specialties charged with administering childhood/adolescent vaccines, such as Human Papillomavirus vaccine (HPVV). Our examination suggests there may be unique cultural and socialization factors that influence clinician HPVV recommendation practice; however, immigrant clinicians have not been adequately engaged within the national HPVV agenda. Given the volume and significance of immigrant clinicians, engagement of these clinicians, in both community and nation-wide efforts to increase HPVV, is a necessary step for improving and achieving the national health goal of optimizing HPVV for cancer prevention.