Expected source of payment and use of hospital services for coronary atherosclerosis

Clinical and demographic factors associated with stimulant use disorder in a rural heart failure population

BACKGROUND

Heart failure is becoming increasingly common among patients under 50 years of age, particularly in African Americans and patients with stimulant use disorder. Yet the sources of these disparities remain poorly understood. This study identified key demographic and clinical factors associated with stimulant use disorder in a largely rural heart failure patient registry.

METHODS

Patient records reporting a diagnosis of heart failure between January 2008 and March 2020 were requested from West Virginia University Hospital Systems (n=37,872). Odds of stimulant use disorder were estimated by demographic group (age, race, sex), insurance carrier, and clinical comorbidities using logistic regression.

RESULTS

Multivariable regression analysis identified higher odds of stimulant use disorder among Black/African Americans (1.95 [1.32, 2.77]) and patients who report drinking one or more alcoholic drinks per week (2.23 [1.72, 2.88]). Lower odds of stimulant use disorder were identified among patients with hypertension (0.59 [0.47, 0.73]), or diabetes (0.65 [0.52, 0.81]).. Likewise, lower odds of stimulant use disorder were noted among females, patients older than 30 years of age and those not enrolled in Medicaid.

CONCLUSION

These results highlight the alarming extent to which Medicaid enrollees, Black/African Americans, people aged 18-24 and 25-44, or persons with a past alcohol use disorder diagnosis are associated with stimulant use disorder among heart failure populations living in largely rural areas. Additionally, they emphasize the need to develop policies and refine clinical care that affects this vulnerable population's prognoses.

Insurance status predicts access to care and outcomes of vascular disease

OBJECTIVE

To determine if insurance status predicts severity of vascular disease at the time of treatment or outcomes following intervention.

METHODS

Hospital discharge databases from Florida and New York from 2000-2005 were analyzed for lower extremity revascularization (LER, n = 73,532), carotid revascularization (CR, n = 116,578), or abdominal aortic aneurysm repair (AAA, n = 35,593), using ICD-9 codes for diagnosis and procedure. The indications for intervention as well as the post-operative outcomes were examined assigning insurance status as the independent variable. Patients covered under a variety of commercial insurers, as well as Medicare, were compared to those who either had no insurance or were covered by Medicaid.

RESULTS

Patients without insurance or with Medicaid were at significantly greater risk of presenting with a ruptured AAA compared to insured (non-Medicaid) patients; while insurance status did not seem to impact post-operative mortality rates for elective and ruptured AAA repair. The uninsured or Medicaid recipients presented with symptomatic carotid disease nearly twice as often as the insured, but stroke rates after CR did not differ significantly based on insurance status. Patients with Medicaid or without insurance were more likely to present with limb threatening ischemia than claudication. In contrast to AAA repair and CR, the outcomes of LER were worse in the uninsured and Medicaid beneficiaries who had higher rates of post-revascularization amputation compared to the insured (non-Medicaid) group.

CONCLUSION

Insurance status predicts disease severity at the time of treatment, but once treated, the outcomes are similar among insurance categories, with the exception of lower extremity revascularization. This data suggests inferior access to preventative vascular care in the Medicaid and the uninsured populations.

Hematopoietic stem cell transplantation among patients with leukemia of all ages in Texas

BACKGROUND

Hematopoietic stem cell transplantation (HSCT) is an effective but expensive medical procedure to which some ethnic minorities, the elderly, and those without insurance have been shown to have limited access. The purpose of the current study was to determine whether socioeconomic factors were associated with HSCT usage rates in patients with leukemia.

METHODS

The authors identified 6574 patients with acute lymphocytic leukemia, chronic lymphocytic leukemia, acute myelogenous leukemia, chronic myelogenous leukemia, or other leukemias from the 1999 Texas Hospital Inpatient Discharge Public Use Data File. Of these patients, 1604 received an autologous or allogeneic HSCT. The authors assessed patients' ethnicity, payer status, age, gender, and comorbid medical conditions. Logistic regression was used to control for patient characteristics and to evaluate associations among payer status, ethnicity, and HSCT use. P < or = 0.05 indicated statistical significance.

RESULTS

Patients who self-paid had the highest rate of HSCT use in all age groups (32%; P < or = 0.01) and in the adult group (36%; P = 0.11). Elderly patients with Medicare had a low rate of HSCT use (17%; P = 0.13). Logistic regression showed no statistically significant associations between payer status or ethnicity and HSCT use. However, elderly women were significantly less likely to undergo HSCT than elderly men (odds ratio, 0.34; P < or = 0.01).

CONCLUSIONS

The lack of statistically significant differences in HSCT use among adult patients with leukemia was surprising because previous studies had shown differences in HSCT by ethnicity and insurance.

The uninsured and the benefits of medical progress

In a recent Health Affairs article, David Cutler and Mark McClellan found that new medical technology confers positive net benefits for several conditions, including heart attacks, cataracts, and depression. We estimate the extent to which uninsured Americans ages 55-64 use these technologies and compute access gaps for each. Based on Cutler and McClellan's net benefit estimates, we calculate that more than $1.1 billion is lost annually from excess morbidity and mortality among the uninsured population because of lack of access to new technologies for the treatment of these three conditions.

Potentially avoidable rehospitalizations following acute myocardial infarction by insurance status

Few studies have explored the impact of health insurance on patients with severe, chronic diseases. This retrospective study examined the association between health insurance and the risk of potentially avoidable rehospitalization in the 3 years following validated acute myocardial infarction (AMI) for a community-based probability sample of 683 patients admitted to 30 California hospitals in 1990-1991. In a multivariate analysis adjusted for measures of comorbidity burden, severity of illness, and AMI-related inpatient care, the risk of readmission was not significantly different among patients with no insurance, Medicare insurance, and non-Medicaid, non-Medicare ("private or other") insurance. However, compared to the latter group, patients with Medicaid were 2.6 times more likely to be readmitted for an AMI-related process (risk ratio. 2.61; 95% confidence interval, 1.33 to 5.11). Additional studies are needed to define the role of health insurance on clinical outcomes and health care access across a broader range of conditions and communities.

Sicker and poorer--the consequences of being uninsured: a review of the research on the relationship between health insurance, medical care use, health, work, and income

Health services research conducted over the past 25 years makes a compelling case that having health insurance or using more medical care would improve the health of the uninsured. The literature's broad range of conditions, populations, and methods makes it difficult to derive a precise quantitative estimate of the effect of having health insurance on the uninsured's health. Some mortality studies imply that a 4% to 5% reduction in the uninsured's mortality is a lower bound; other studies suggest that the reductions could be as high as 20% to 25%. Although all of the studies reviewed suffer from methodological flaws of varying degrees, there is substantial qualitative consistency across studies of different medical conditions conducted at different times and using different data sets and statistical methods. Corroborating process studies find that the uninsured receive fewer preventive and diagnostic services, tend to be more severely ill when diagnosed, and receive less therapeutic care. Other literature suggests that improving health status from fair or poor to very good or excellent would increase both work effort and annual earnings by approximately 15% to 20%.

Hospital transfer of patients with acute myocardial infarction: the effects of age, race, and insurance type

BACKGROUND

Many factors precipitate the transfer of patients hospitalized for acute myocardial infarction, including clinical status and the need for diagnostic testing and therapeutic interventions not available at the admitting hospital. The objectives of this study were to assess the frequency of transfer to another hospital and to determine whether nonmedical factors, such as age, sex, race, and insurance status, are associated with transfer.

METHODS

We conducted a prospective study of patients with acute myocardial infarction who were enrolled in the National Registry of Myocardial Infarction 2 from June 1994 through March 1998. The Registry involves 1674 hospitals in the United States. All patients survived to the time of hospital discharge or until transfer. Multivariable logistic regression models, with transfer as the outcome variable, were developed for the entire sample, as well as for subgroups determined by the interventional capabilities of the admitting hospital.

RESULTS

Of 537,283 patients with acute myocardial infarction, 152,310 (28%) were transferred to another hospital after admission. After adjustment for differences in clinical and hospital characteristics, factors that were most associated with a reduced odds of transfer included older age (odds ratio [OR] = 0.43; 95% confidence interval [CI]: 0.42 to 0.44 for those aged >75 vs. <65 years), African-American race (OR = 0.69; 95% CI: 0.67 to 0.71 for African Americans vs. whites), and Medicaid/self-pay insurance status (OR = 0.68; 95% CI: 0.66 to 0.70 for Medicaid/self-pay vs. commercial insurance). These effects were most apparent for patients admitted to hospitals without full invasive diagnostic and therapeutic capabilities, but persisted to some extent among those admitted to hospitals with full invasive services.

CONCLUSION

Our findings suggest that nonmedical factors, including age, race, and insurance type, affect decisions regarding the transfer of patients hospitalized with acute myocardial infarction. As only a minority of the nation's hospitals offers a full range of cardiovascular diagnostic and therapeutic procedures, these findings reinforce ongoing concerns about disparities in access to health care services for some patients.

Patient characteristics associated with care by a cardiologist among adults hospitalized with severe congestive heart failure. SUPPORT Investigators. Study to Understand Prognoses and Preferences for Outcomes and Risks of Treatments

OBJECTIVES

The goal of this study was to determine factors associated with receiving cardiologist care among patients with an acute exacerbation of congestive heart failure.

BACKGROUND

Because cardiologist care for acute cardiovascular illness may improve care, barriers to specialty care could impact patient outcomes.

METHODS

We studied 1,298 patients hospitalized with acute exacerbation of congestive heart failure who were cared for by cardiologists or generalist physicians. Using multivariable logistic models we determined factors independently associated with attending cardiologist care.

RESULTS

Patients were less likely to receive care from a cardiologist if they were black (adjusted odds ratio [AOR] 0.53, 95% confidence interval [CI] 0.35, 0.80), had an income of less than $11,000 (AOR 0.65, 95% CI 0.45, 0.93) or were older than 80 years of age (AOR 0.23, 95% CI 0.12, 0.46). Patients were more likely to receive cardiologist care if they had college level education (AOR 1.89, 95% CI 1.02, 3.51), a history of myocardial infarction (AOR 1.59, 95% CI 1.17, 2.16), a serum sodium less than 133 on admission (AOR 1.96, 95% CI 1.30, 2.95) or a systolic blood pressure less than 90 on admission (AOR 1.97, 95% CI 1.20, 3.24). Patients who stated a desire for life extending care were also more likely to receive care from a cardiologist (AOR 1.40, 95% CI 1.04, 1.90).

CONCLUSIONS

After adjusting for severity of illness and patient preferences for care, patient sociodemographic factors were strongly associated with receiving care from a cardiologist. Future investigations are required to determine whether these associations represent unmeasured preferences for care or inequities in our health care system.

Appropriateness of coronary angiography after myocardial infarction among Medicare beneficiaries. Managed care versus fee for service

BACKGROUND

Previous studies have documented that cardiac procedures are performed less frequently in patients enrolled in managed-care plans than in those with fee-for-service coverage. However, it is not known whether this difference is due to less frequent use of cardiac procedures when they are indicated or to less frequent use when they are not indicated.

METHODS

We compared the use of coronary angiography after acute myocardial infarction among Medicare beneficiaries who had traditional fee-for-service coverage with the use among Medicare beneficiaries enrolled in managed-care plans. The analysis was adjusted for differences in demographic and clinical characteristics of the patients and for characteristics of the hospitals to which they were admitted. We studied more than 50,000 beneficiaries in seven states and evaluated their care according to guidelines proposed by the American College of Cardiology and the American Heart Association (ACC-AHA).

RESULTS

Among the 44 percent of patients in both groups who had ACC-AHA class I indications (those for which angiography is useful and effective), more fee-for-service beneficiaries than managed-care enrollees underwent angiography (46 percent vs. 37 percent, P<0.001). The rate of angiography was very low among patients with class I indications who were admitted to hospitals without angiography facilities (31 percent in the fee-for-service group and 15 percent in the managed-care group, P<0.001). Among patients with class III indications (those for which angiography is not effective), the rate of use was low in both groups (approximately 13 percent).

CONCLUSIONS

In situations in which angiography is thought to be useful, it is used less often among Medicare beneficiaries enrolled in managed-care plans than among those with fee-for-service coverage. Moreover, rates of use among patients with class I indications are fairly low in both groups, suggesting that there is room for improving the care of elderly patients with myocardial infarction, especially those admitted to hospitals without angiography facilities.

The consequences and opportunities of shortened lengths of stay for cardiovascular patients

Length of hospitalization for many cardiovascular conditions has decreased dramatically recently. Many attribute this increase to the cost constraints imposed by managed care and to improved technologies. Although technological developments have contributed to cost inflation, they have also reduced the need for long hospitalizations and improved patient outcomes. This new context for delivering cardiovascular services is discussed in terms of the challenges and opportunities for nursing leadership in several aspects of care.

Differences in discharge medication after acute myocardial infarction in patients with HMO and fee-for-service medical insurance

OBJECTIVE

To assess the impact of fee-for-service (FFS) versus HMO medical insurance coverage on receipt of aspirin, beta-blockers, and calcium channel blockers at the time of hospital discharge following an acute myocardial infarction.

DESIGN

Prospective, population-based study.

SETTING

All 16 community and tertiary care hospitals in the metropolitan area of Worcester, Massachusetts.

PATIENTS

The study population consisted of patients under 65 years of age hospitalized with a validated acute myocardial infarction in all hospitals in the Worcester (Massachusetts) Standard Metropolitan Statistical Area (1990 census estimate, 437,000) during 1986, 1988, 1990, 1991, and 1993.

MEASUREMENTS AND MAIN RESULTS

After adjustment for demographic and clinical variables as well as study year, the odds ratios for receipt of each medication for patients with HMO insurance compared with FFS were 1.05 (95% confidence interval [CI] 0.77, 1.44) for aspirin, 1.32 (95% CI 0.98, 1.76) for beta-blockers, and 0.72 (95% CI 0.54, 0.96) for calcium channel blockers. Examination of temporal trends in utilization of these agents suggests that observed decreases in use of calcium channel blockers and increases in use of beta-blockers over the period under study occurred more rapidly for HMO than for FFS patients.

CONCLUSIONS

Overall, use of aspirin and beta-blockers was comparable among HMO and FFS patients and use of calcium channel blockers (deemed less effective or ineffective for secondary prevention) was lower among HMO patients. Differential adoption, over time, of evidence-based prescribing practices for medications between HMO and FFS patients who have had a myocardial infarction warrants further study.

Influence of payor on use of invasive cardiac procedures and patient outcome after myocardial infarction in the United States. Participants in the National Registry of Myocardial Infarction

OBJECTIVES

We sought to determine the influence of payor status on the use and appropriateness of cardiac procedures.

BACKGROUND

The use of invasive procedures affects the cost of cardiovascular care and may be influenced by payor status.

METHODS

We compared treatment and outcomes of myocardial infarction among four payor groups: fee for service (FFS), health maintenance organization (HMO), Medicaid and uninsured. Multivariate comparison was performed on the use of invasive cardiac procedures, length of hospital stay and in-hospital mortality in 17,600 patients <65 years old enrolled in the National Registry of Myocardial Infarction from June 1994 to October 1995. To determine the appropriateness of coronary angiography, we compared its use in patients at low and high risk for cardiac events.

RESULTS

Angiography was performed in 86% of FFS, 80% of HMO, 61% of Medicaid and 75% of uninsured patients. FFS patients were more likely to undergo angiography than HMO (odds ratio [OR] 1.27, 95% confidence interval [CI] 1.13 to 1.42), Medicaid (OR 2.43, 95% CI 2.11 to 2.81) and uninsured patients (OR 1.99, 95% CI 1.76 to 2.25). Similar patterns for the use of coronary revascularization were found. Among those at low risk, FFS patients were as likely to undergo angiography as HMO patients but more likely than Medicaid and uninsured patients. For those at high risk, FFS patients were more likely to undergo angiography than patients in other payor groups. Adjusted mean length of stay (7.3 days) was similar among all payor groups, but adjusted mortality was higher in the Medicaid group (Medicaid vs. FFS: OR 1.55, 95% CI 1.19 to 2.01).

CONCLUSIONS

Payor status is associated with the use and appropriateness of invasive cardiac procedures but not length of hospital stay after myocardial infarction. The higher in-hospital mortality in the Medicaid cohort merits further study.

Monitoring the consequences of uninsurance: a review of methodologies

The proportion of the United States population without health insurance continues to grow. How will this affect the health of the nation? Prior research suggests that the uninsured are at risk for poor health outcomes. They use fewer medical services and have higher mortality rates than do insured persons. The episodic nature of uninsurance and its prevalence among disadvantaged groups makes it difficult to ascertain the health effects of uninsurance. The goal of this review is to assist researchers and policy makers in choosing methodologies to assess the effects of uninsurance. It provides a compendium of methods that have been used to examine the health consequences of uninsurance, the populations in which these methods have been used, and the strengths and weaknesses of different approaches. The review highlights the need for more longitudinal studies that focus on community-based samples of the uninsured.

A comparison of hospital utilization by Medicaid and privately insured patients

This study of 45,691 patients from 73 hospitals in 22 states shows that Medicaid patients have longer total lengths of stay as well as longer preoperative and postoperative lengths of stay than privately insured patients after adjusting for admission severity of illness and other patient variables. Medicaid patients also had higher ancillary charges and higher total charges. These hospital utilization patterns held in states that paid hospitals per case as well as in states that paid hospitals per diem rates with the exception of ancillary services in the per diem states. A direct test between Medicaid patients under the two payment systems revealed no difference in length of stay, ancillary, and total charges. These findings suggest that service levels to Medicaid patients were not associated with how the hospitals were paid and challenge the assumptions that hospitals can continue to reduce services in response to reimbursement constraints. The implications of these findings for health policy and health services management are discussed.

Racial and ethnic disparities in the use of cardiovascular procedures: associations with type of health insurance

OBJECTIVES

This study examined whether disparities in the use of cardiovascular procedures exist among African Americans, Latinos, and Asians relative to White patients, within health insurance categories.

METHODS

Hospital discharge records (n = 104,952) of Los Angeles Country, California, residents with possible coronary artery disease were analyzed.

RESULTS

After adjustment for confounders, lower odds of procedure use were found for African American and Latino patients for most types of insurance. Asians and Pacific Islanders had odds of procedure use similar to those of White patients. Disparities were absent among the privately insured.

CONCLUSIONS

Racial and ethnic disparities in procedure rates were evident in all types of insurance except private insurance.