Preventable hospitalizations for hypertension: establishing a baseline for monitoring racial differences in rates.

INTRODUCTION: Preventable hospitalization for hypertension is an ambulatory care-sensitive condition believed to indicate the failure of outpatient and public health systems to prevent and control hypertension. Blacks have higher rates of such hospitalizations than whites. The 2010 Patient Protection and Affordable Care Act (PPACA) seeks to implement higher quality health care, which may help close the racial gap in these rates. The objective of this study was to analyze pre-PPACA baseline rates of preventable hypertension hospitalizations in the United States and racial differences over time. METHODS: We used data from the 1995-2010 National Hospital Discharge Survey, a stratified, probability-designed survey representing approximately 1% of hospitalizations in the United States. Rates were calculated using specifications published by the Agency for Healthcare Research and Quality requiring census data as denominators for the rates. We combined at least 3 years of data to obtain more precise estimates and conducted a trend analysis by using rates calculated for each of the resulting 5 periods. RESULTS: For both sexes, all age groups, and each period, blacks had higher crude rates than whites. Age- and sex-standardized rates confirmed this finding (eg, 2007-2010: blacks, 334 per 100,000; whites, 97.4 per 100,000). Rates were generally flat over time; however, white women aged 65 or older showed increasing rates. CONCLUSION: Using national data, we confirmed higher rates of preventable hypertension hospitalizations for blacks, showing little improvement in disparities over time. This pre-PPACA baseline for blacks and whites allows for ongoing monitoring of preventable hospitalizations for hypertension.

Preventable hospitalizations and emergency department visits for angina, United States, 1995-2010.

INTRODUCTION: Preventable hospitalizations for angina have been decreasing since the late 1980s - most likely because of changes in guidance, physician coding practices, and reimbursement. We asked whether this national decline has continued and whether preventable emergency department visits for angina show a similar decline. METHODS: We used National Hospital Discharge Survey data from 1995 through 2010 and National Hospital Ambulatory Medical Care Survey data from 1995 through 2009 to study preventable hospitalizations and emergency department visits, respectively. We calculated both crude and standardized rates for these visits according to technical specifications published by the Agency for Healthcare Research and Quality, which uses population estimates from the US Census Bureau as the denominator for the rates. RESULTS: Crude hospitalization rates for angina declined from 1995-1998 to 2007-2010 for men and women in all 3 age groups (18-44, 45-64, and ≥65) and age- and sex-standardized rates declined in a linear fashion (P = .02). Crude rates for preventable emergency department visits for angina declined for men and women aged 65 or older from 1995-1998 to 2007-2009. Age- and sex-standardized rates for these visits showed a linear decline (P = .05). CONCLUSION: We extend previous research by showing that preventable hospitalization rates for angina have continued to decline beyond the time studied previously. We also show that emergency department visits for the same condition have also declined during the past 15 years. Although these declines are probably due to changes in diagnostic practices in the hospitals and emergency departments, more studies are needed to fully understand the reasons behind this phenomenon.

Preventable hospitalizations for congestive heart failure: establishing a baseline to monitor trends and disparities.

INTRODUCTION: Preventable hospitalization for congestive heart failure (CHF) is believed to capture the failure of the outpatient health care system to properly manage and treat CHF. In anticipation of changes in the national health care system, we report baseline rates of these hospitalizations and describe trends by race over 15 years. METHODS: We used National Hospital Discharge Survey data from 1995 through 2009, which represent approximately 1% of hospitalizations in the United States each year. We calculated age-, sex-, and race-stratified rates and age- and sex-standardized rates for preventable CHF hospitalizations on the basis of the Agency for Healthcare Research and Quality's specifications, which use civilian population estimates from the US Census Bureau as the denominator for rates. RESULTS: Approximately three-fourths of the hospitalizations occurred among people aged 65 years or older. In each subgroup and period, rates were significantly higher (P < .05) for blacks than whites. Only black men aged 18 to 44 showed a linear increase (P = .004) in crude rates across time. Subpopulations aged 65 or older, except black men, showed a linear decrease (P < .05) in crude rates over time. Age- and sex-standardized rates showed a significant linear decrease in rates for whites (P = .01) and a borderline decrease for blacks (P = .06) CONCLUSION: Before implementation of the Patient Protection and Affordable Care Act, we found that blacks were disproportionately affected by preventable CHF hospitalizations compared with whites. Our results confirm recent findings that preventable CHF hospitalization rates are declining in whites more than blacks. Alarmingly, rates for younger black men are on the rise.

Association Between Self-Reported Hypertension and Antihypertensive Medication Use and Cardiovascular Disease-Related Events and Expenditures Among Patients Diagnosed With Hypertension.

OBJECTIVES: Research suggests that persons who are aware of the risk factors for cardiovascular disease (CVD) are more likely to engage in healthy behaviors than persons who are not aware of the risk factors. We examined whether patients whose insurance claims included an International Classification of Diseases, Ninth Revision (ICD-9) code associated with hypertension who self-reported high blood pressure were more likely to fill antihypertensive medication prescriptions and less likely to have CVD-related emergency department visits and hospitalizations (hereinafter, CVD-related events) and related medical expenditures than patients with these codes who did not self-report high blood pressure. METHODS: We used a large convenience sample from the MarketScan Commercial Database linked with the MarketScan Health Risk Assessment (HRA) Database to identify patients aged 18-64 in the United States whose insurance claims included an ICD-9 code associated with hypertension and who completed an HRA from 2008 through 2012 (n = 111 655). We used multivariate logistic regression analysis to examine the association between self-reported high blood pressure and (1) filling prescriptions for antihypertensive medications and (2) CVD-related events. Because most patients with hypertension will not have a CVD-related event, we used a 2-part model to analyze medical expenditures. The first part estimated the likelihood of a CVD-related event, and the second part estimated expenditures. RESULTS: Patients with an ICD-9 code of hypertension who self-reported high blood pressure had a significantly higher predicted probability of filling antihypertensive medication prescriptions (26.5%; 95% confidence interval, 25.7-27.3; P < .001), had a significantly lower predicted probability of a CVD-related event (0.6%, P < .001), and on average spent significantly less on CVD-related events ($251, P = .01) than patients who did not self-report high blood pressure. CONCLUSION: This study affirms that self-knowledge of high blood pressure, even among patients who are diagnosed and treated for hypertension, can be improved. Interventions that improve patients' awareness of their hypertension may improve antihypertensive medication use and reduce adverse CVD-related events.

The WISEWOMAN program: reflection and forecast.

The WISEWOMAN program targets low-income under- and uninsured women aged 40-64 years for screening and interventions aimed at reducing the risk of heart disease, stroke, and other chronic diseases. The program enters its third phase on June 30, 2008. Design issues and results from Phase I and Phase II have been published in a series of papers. We summarize remaining challenges, which were identified through systematic research and evaluation. Phase III will address these challenges through a number of new initiatives such as allowing interventions of different intensities, taking advantage of resources for promoting community health, and providing evidence-based interventions through the program's Center of Excellence. Finally, we provide a framework and vision so that organizational, community, and other partners can make the case for the importance of the program to their communities and for what is needed to make it work.

Beyond effectiveness: evaluating the public health impact of the WISEWOMAN program.

Interventions that are effective are often improperly or only partially implemented when put into practice. When intervention programs are evaluated, feasibility of implementation and effectiveness need to be examined. Reach, effectiveness, adoption, implementation, and maintenance make up the RE-AIM framework used to assess such programs. To examine the usefulness of this metric, we addressed 2 key research questions. Is it feasible to operationalize the RE-AIM framework using women's health program data? How does the determination of a successful program differ if the criterion is (1) effectiveness alone, (2) reach and effectiveness, or (3) the 5 dimensions of the RE-AIM framework? Findings indicate that it is feasible to operationalize the RE-AIM concepts and that RE-AIM may provide a richer measure of contextual factors for program success compared with other evaluation approaches.

Ethnicity and nutrient intake among Arizona WISEWOMAN participants.

BACKGROUND: Diet quality and risks of chronic disease have been identified, yet nutrient intakes from older uninsured populations have been scarcely described. METHODS: Using the dietary intake profiles of an older, uninsured, and mostly Hispanic sample of Arizona WISEWOMAN participants, two ethnic groups were compared: Mexican American and non-Hispanic white women. Sociodemographic data related to nutrient intakes were identified. Estimated mean nutrient intakes of Mexican Americans (n = 260) and non-Hispanic white (n = 88) women were compared based on ethnicity and acculturation levels. Using linear regression models, associations of individual characteristics were made on nutrients for which reported intakes were less than the estimated average requirement (EAR). RESULTS: Mexican Americans had energy, vitamin E, and niacin intakes that were significantly lower than those of non-Hispanic whites, whereas vitamin A intake was significantly higher among Mexican Americans. Less acculturated Mexican American women had significantly higher intakes of vitamin E and folate than their more acculturated counterparts. For both ethnic and acculturation groups, intakes of vitamin E, calcium, and potassium were lower than the established standards in more than 70% of this population. Having a high body mass index (BMI) was associated with lower reported energy intake and higher protein and potassium intakes, and smoking was associated with lower intakes of vitamin E and folate. CONCLUSIONS: Mexican American women had overall lower micronutrient intakes compared with uninsured non-Hispanic white older women; this difference may be attributed to their underreporting intake.

A captive audience: bringing the WISEWOMAN program to South Dakota prisoners.

PURPOSE: This analysis compares the baseline heart disease risk profile of WISEWOMAN participants screened in the South Dakota Women's Prison with the general WISEWOMAN population in South Dakota and explores the potential benefits of lifestyle intervention programs to reduce heart disease risk factors among women during incarceration. METHODS: Using baseline data for WISEWOMAN participants in South Dakota, we compared participants who were enrolled in prison (n = 261) with nonincarcerated participants enrolled throughout the state (n = 1,427). Using regression analysis and adjusting for demographics, we assessed differences in baseline prevalence of risk factors (hypertension, high cholesterol, smoking, and obesity), awareness and treatment of hypertension and high cholesterol, and attendance at lifestyle intervention sessions. RESULTS: Incarcerated participants had significantly lower (p < .01) total cholesterol (183 mg/dL) than nonincarcerated participants (199 mg/dL). However, a significantly higher (p < .03) percentage of incarcerated women (85%) than nonincarcerated women (54%) with high cholesterol were unaware of their condition. Despite the smoke-free status of the prison, 24% of incarcerated participants reported smoking. Attendance at lifestyle intervention sessions was significantly higher among incarcerated participants than among nonincarcerated participants with intervention take-up rates of 53% among incarcerated versus 23% among nonincarcerated women (p < .01) and intervention completion rates of 43% and 4% (p < .01). CONCLUSIONS: The results illustrate the need for screening and education programs in prisons. WISEWOMAN screenings helped identify undiagnosed cases of abnormal blood pressure and cholesterol, and educational interventions provided women with opportunities to improve their health. Such programs may also improve discharge planning and linkages between released women and community health providers.

The impact of medication use in a multicomponent intervention: results from the WISEWOMAN program.

PURPOSE: To assess the impact of medication use on improvements in coronary heart disease (CHD) risk among WISEWOMAN participants. DESIGN: Pre-post analysis. SETTING: WISEWOMAN projects operating at the local level in 8 states. SUBJECTS: WISEWOMAN participants with baseline and one-year follow-up data with at least one abnormal risk factor at baseline (N=2385; 24% of women with baseline visits). INTERVENTION: WISEWOMAN provides low-income uninsured women with CHD risk factor screenings, lifestyle interventions, access to medications, and referral services. MEASURES: One-year changes in blood pressure, cholesterol, and 10-year CHD risk by medication status. ANALYSIS: Regression analysis was used to estimate risk factor changes by medication status (newly medicated women, women medicated at baseline, or not medicated women) and quantify the percentage of improvements in risk factors attributed to medication use. RESULTS: Participants experienced statistically significant improvements in systolic (12.6 mm Hg) and diastolic (9.7 mm Hg) blood pressure, total (25.7 mg/dl) and HDL (4.9 mg/dl) cholesterol, and 10-year CHD risk (11.6%). Medication use was responsible for 4% to 5% of the reduction in blood pressure, 32% of the reduction in total cholesterol, 3% of the increase in HDL cholesterol, and 31 % of the reduction in 10-year CHD risk. CONCLUSIONS: Some of the improvements in CHD risk factors can be attributed to medication use; however, the majority of improvements are likely driven by a combination of other factors, including screenings, risk factor counseling, and lifestyle interventions.

Cardiovascular disease risk factor screening among Alaska Native women: the traditions of the heart project.

OBJECTIVES: To describe tobacco use, obesity and overweight, high blood pressure, high blood cholesterol and impaired glucose tolerance in Alaska Native and American Indian women living in the Anchorage area. STUDY DESIGN: Cross-sectional evaluation of women enrolled in the Traditions of the Heart program. METHODS: Traditions of the Heart was a randomized controlled trial of an intervention to reduce risk factors for cardiovascular disease. Starting in October 2000, Southcentral Foundation provided a 12-week group lifestyle intervention to eligible Alaska Native and American Indian women aged 40 to 64 residing in the Anchorage area. The study included assessment of biochemical and behavioral risk factors for cardiovascular disease. RESULTS: Of the 1334 women who enrolled between October 2000 and July 2005, 33.5% were current smokers, 78.8% were overweight or obese, 10.9% were hypertensive, 21.4% had elevated total cholesterol, and 5.6% had fasting glucose concentrations > or = 126 mg/dL. CONCLUSIONS: The women in this study had many risk factors for cardiovascular disease. Interventions are needed to reduce these risk factors among Alaska Native women.