Neighborhood-Level Chronic Disease Surveillance: Utility of Primary Care Electronic Health Records and Emergency Department Claims Data.

CONTEXT: Disease burden may vary substantively across neighborhoods in an urban setting. Yet, data available for monitoring chronic conditions at the neighborhood level are scarce. Large health care data sets have potential to complement population health surveillance. Few studies have examined the utility of health care data for neighborhood-level surveillance. OBJECTIVE: We examined the use of primary care electronic health records (EHRs) and emergency department (ED) claims for identifying neighborhoods with higher chronic disease burden and neighborhood-level prevalence estimation. DESIGN: Comparison of hypertension and diabetes estimates from EHRs and ED claims with survey-based estimates. SETTING: Forty-two United Hospital Fund neighborhoods in New York City. PARTICIPANTS: The EHR sample comprised 708 452 patients from the Hub Population Health System (the Hub) in 2015, and the ED claim sample comprised 1 567 870 patients from the Statewide Planning and Research Cooperative System in 2015. We derived survey-based estimates from 2012 to 2016 Community Health Survey (n = 44 189). MAIN OUTCOME MEASURE: We calculated hypertension and diabetes prevalence estimates by neighborhood from each data source. We obtained Pearson correlation and absolute difference between EHR-based or claims-based estimates and survey-based estimates. RESULTS: Both EHR-based and claims-based estimates correlated strongly with survey-based estimates for hypertension (0.91 and 0.72, respectively) and diabetes (0.83 and 0.82, respectively) and identified similar neighborhoods of higher burden. For hypertension, 10 and 17 neighborhoods from the EHRs and ED claims, respectively, had an absolute difference of more than 5 percentage points from the survey-based estimate. For diabetes, 15 and 4 neighborhoods from the EHRs and ED claims, respectively, differed from the survey-based estimate by more than 5 percentage points. CONCLUSIONS: Both EHRs and ED claims data are useful for identifying neighborhoods with greater disease burden and have potential for monitoring chronic conditions at the neighborhood level.

Challenges and strategies for hypertension management: qualitative analysis of small primary care practices with varying blood pressure control.

BACKGROUND: Electronic health record (EHR) data on blood pressure (BP) control among patients with hypertension show that practices' rates vary greatly. This suggests providers use different approaches in managing hypertension, and so we aimed to explore challenges small primary care practice providers face and strategies they use to manage patients' BP. We explored differences between providers with high and low BP control rates to help inform future quality improvement work. METHODS: In 2015, we recruited practices in New York City with five or fewer providers. We employed a stratified purposeful sampling method, using EHR data to categorize small practices into groups based on the proportion of patients with hypertension whose last BP was <140/90: high control (>= 80%), average control (60-80%) and low control (<60%). We conducted semi-structured qualitative interviews with clinicians from 23 practices-7 high control, 10 average control and 6 low control-regarding hypertension management. We used a combined inductive/deductive approach to identify key themes, and these themes guided a comparison of high and low BP control providers. RESULTS: Small practice providers reported treatment non-adherence as one of the primary challenges in managing patients' hypertension, and described using patient education, relationship building and self-management tools to address this issue. Providers differed qualitatively in the way they described using these strategies; high BP control providers described more actively engaging and listening to patients than low control providers did. CONCLUSIONS: How providers communicate with patients may impact outcomes-future quality improvement initiatives should consider trainings to improve patient-provider communication.

Relationship Between Chronic Conditions and Disability in African American Men and Women.

BACKGROUND: Race differences in chronic conditions and disability are well established; however, little is known about the association between specific chronic conditions and disability in African Americans. This is important because African Americans have higher rates and earlier onset of both chronic conditions and disability than white Americans. METHODS: We examined the relationship between chronic conditions and disability in 602 African Americans aged 50 years and older in the Baltimore Study of Black Aging. Disability was measured using self-report of difficulty in activities of daily living (ADL). Medical conditions included diagnosed self-reports of asthma, depressive symptoms, arthritis, cancer, diabetes, cardiovascular disease (CVD), stroke, and hypertension. RESULTS: After adjusting for age, high school graduation, income, and marital status, African Americans who reported arthritis (women: odds ratio (OR)=4.87; 95% confidence interval(CI): 2.92-8.12; men: OR=2.93; 95% CI: 1.36-6.30) had higher odds of disability compared to those who did not report having arthritis. Women who reported major depressive symptoms (OR=2.59; 95% CI: 1.43-4.69) or diabetes (OR=1.83; 95% CI: 1.14-2.95) had higher odds of disability than women who did not report having these conditions. Men who reported having CVD (OR=2.77; 95% CI: 1.03-7.41) had higher odds of disability than men who did not report having CVD. CONCLUSIONS: These findings demonstrate the importance of chronic conditions in understanding disability in African Americans and how it varies by gender. Also, these findings underscore the importance of developing health promoting strategies focused on chronic disease prevention and management to delay or postpone disability in African Americans. PUBLICATION INDICES: Pubmed, Pubmed Central, Web of Science database.

Disentangling race and social context in understanding disparities in chronic conditions among men.

Disparities in men's health research may inaccurately attribute differences in chronic conditions to race rather than the different health risk exposures in which men live. This study sought to determine whether living in the same social environment attenuates race disparities in chronic conditions among men. This study compared survey data collected in 2003 from black and white men with similar incomes living in a racially integrated neighborhood of Baltimore to data from the 2003 National Health Interview Survey. Multivariable logistic regression models estimated to determine whether race disparities in chronic conditions were attenuated among men living in the same social environment. In the national sample, black men exhibited greater odds of having hypertension (odds ratio [OR] = 1.58, 95% confidence interval [CI] 1.34, 1.86) and diabetes (OR = 1.62, 95% CI 1.27-2.08) than white men. In the sample of men living in the same social context, black and white respondents had similar odds of having hypertension (OR = 1.05, 95% CI 0.70, 1.59) and diabetes (OR = 1.12, 95% CI 0.57-2.22). There are no race disparities in chronic conditions among low-income, urban men living in the same social environment. Policies and interventions aiming to reduce disparities in chronic conditions should focus on modifying social aspects of the environment.

Racial disparities in hypertension awareness and management: are there differences among African Americans and Whites living under similar social conditions?

OBJECTIVE: To examine the nature of disparities in hypertension awareness, treatment, and control within a sample of Whites and African Americans living in the same social context and with access to the same health care environment. DESIGN: Cross-sectional study SETTING: Southwest Baltimore, Maryland PARTICIPANTS: 949 hypertensive African American and White adults in the Exploring Health Disparities in Integrated Communities-Southwest Baltimore (EHDIC-SWB) Study. MAIN OUTCOME MEASURES: Hypertensive participants who reported having been diagnosed by a doctor were considered to be aware of their hypertension. Among hypertensive adults aware of their condition, those who reported taking antihypertensive medications were classified as being in treatment. Among the treated hypertensive adults who had diabetes, those with systolic BP < 130 mm Hg and diastolic BP < 80 mm Hg were considered to be controlled. Among the treated hypertensive participants who did not have diabetes, those with systolic BP < 140 mmHg and diastolic BP < 90 mm Hg were also considered to be controlled. RESULTS: After adjusting for age, sex, marital status, education, income, health insurance, weight status, smoking status, drinking status, physical activity, cardiovascular disease, stroke, and diabetes, African Americans had greater odds of being aware of their hypertension than Whites (odds ratio = 1.44; 95% confidence interval 1.04, 2.01). However, African Americans and Whites had similar odds of being treated for hypertension, and having their hypertension under control. CONCLUSION: Within this racially integrated sample of hypertensive adults who share similar health care markets, race differences in treatment and control of hypertension were eliminated. Accounting for the social context should be considered in public health interventions to increase hypertension awareness and management.

Racial disparities in disability among older adults: finding from the exploring health disparities in integrated communities study.

OBJECTIVE: Persistent and consistently observed racial disparities in physical functioning likely stem from racial differences in social resources and environmental conditions. METHOD: We examined the association between race and reported difficulty performing instrumental activities of daily living (IADL) in 347 African American (45.5%) and Whites aged 50 or above in the Exploring Health Disparities in Integrated Communities-Southwest Baltimore, Maryland Study (EHDIC-SWB). RESULTS: Contrary to previous studies, African Americans had lower rates of disability (women: 25.6% vs. 44.6%, p = .006; men: 15.7% vs. 32.9%; p = .017) than Whites. After adjusting for sociodemographics, health behaviors, and comorbidities, African American women (odds ratio [OR] = 0.32, 95% confidence interval [CI] = [0.14, 0.70]) and African American men (OR = 0.34, 95% CI = [0.13, 0.90]) retained their functional advantage compared with White women and men, respectively. CONCLUSION: These findings within an integrated, low-income urban sample support efforts to ameliorate health disparities by focusing on the social context in which people live.