Efforts to reduce racial disparities in Medicare managed care must consider the disproportionate effects of geography

OBJECTIVE

To examine the impact of geographic variation on racial differences in 7 of 15 Health Plan Employer Data and Information Set (HEDIS) measures that assess the quality of the Medicare managed care program (also known as Medicare+Choice).

STUDY DESIGN

Cross-sectional analysis using the 2004 individual-level HEDIS for Medicare managed care plans and 2003 Medicare enrollment and demographic (ie, denominator) data for more than 5.1 million Medicare+Choice enrollees.

METHODS

Individual-level HEDIS data were linked with Medicare enrollment data. Hierarchical generalized linear models were used to assess statistical significance of region and race. Direct standardization was used to estimate the rate of meeting each HEDIS standard while controlling for differences in age and sex.

RESULTS

Quality of care for white Medicare+Choice enrollees was strongly correlated with the racial composition of the geographic area. Except for cholesterol management after an acute cardiac event, between-region racial variation was consistently greater than within-region racial variation.

CONCLUSION

Removing within-region racial variation while ignoring geographic differences will not equalize the experiences of black and white elders. Rather, both racial and geographic components of healthcare quality must be addressed if the Medicare managed care program is to provide care of equal quality to all elders regardless of race.

Composite health plan quality scales

This study employs exploratory factor analysis and scale construction methods with commercial Health Plan Employers Data Information Set (HEDISS) process of care and outcome measures from 1999 to uncover evidence for a unidimensional composite health maintenance organization (HMO) quality scale. Summated scales by categories of care are created and are then used in a factor analysis that has a single factor solution. The category of care scales were used to construct a summated composite scale which exhibits strong evidence of internal consistency (alpha= 0.90). External validity of the composite quality scale was checked by regressing the composite scale on Consumer Assessment of Healthcare Providers and Systems (CAHPS) survey results for 1999.

The effect of benefits, premiums, and health risk on health plan choice in the Medicare program

OBJECTIVE

To estimate the effect of Medicare+Choice (M+C) plan premiums and benefits and individual beneficiary characteristics on the probability of enrollment in a Medicare+Choice plan.

DATA SOURCE

Individual data from the Medicare Current Beneficiary Survey were combined with plan-level data from Medicare Compare.

STUDY DESIGN

Health plan choices, including the Medicare+Choice/Fee-for-Service decision and the choice of plan within the M+C sector, were modeled using limited information maximum likelihood nested logit.

PRINCIPAL FINDINGS

Premiums have a significant effect on plan selection, with an estimated out-of-pocket premium elasticity of -0.134 and an insurer-perspective elasticity of -4.57. Beneficiaries are responsive to plan characteristics, with prescription drug benefits having the largest marginal effect. Sicker beneficiaries were more likely to choose plans with drug benefits and diabetics were more likely to pick plans with vision coverage.

CONCLUSIONS

Plan characteristics significantly impact beneficiaries' decisions to enroll in Medicare M+C plans and individuals sort themselves systematically into plans based on individual characteristics.

The Medicare Health Outcomes Survey program: overview, context, and near-term prospects

In 1996, the Centers for Medicare & Medicaid Services (CMS) initiated the Medicare Health Outcomes Survey (HOS). It is the first national survey to measure the quality of life and functional health status of Medicare beneficiaries enrolled in managed care. The program seeks to gather valid and reliable health status data in Medicare managed care for use in quality improvement activities, public reporting, plan accountability and improving health outcomes based on competition. The context that led to the development of the HOS was formed by the convergence of the following factors: 1) a recognized need to monitor the performance of managed care plans, 2) technical expertise and advancement in the areas of quality measurement and health outcomes assessment, 3) the existence of a tested functional health status assessment tool (SF-36)1, which was valid for an elderly population, 4) CMS leadership, and 5) political interest in quality improvement. Since 1998, there have been six baseline surveys and four follow up surveys. CMS, working with its partners, performs the following tasks as part of the HOS program: 1) Supports the technical/scientific development of the HOS measure, 2) Certifies survey vendors, 3) Collects Health Plan Employer Data and Information Set(HEDIS)2 HOS data, 4) Cleans, scores, and disseminates annual rounds of HOS data, public use files and reports to CMS, Quality Improvement Organizations (QIOs), Medicare+Choice Organizations (M+COs), and other stakeholders, 5) Trains M+COs and QIOs in the use of functional status measures and best practices for improving care, 6) Provides technical assistance to CMS, QIOs, M+COs and other data users, and 7) Conducts analyses using HOS data to support CMS and HHS priorities.CMS has recently sponsored an evaluation of the HOS program, which will provide the information necessary to enhance the future administration of the program. Information collected to date reveals that the HOS program is a valuable tool that provides a rich set of data that is useful for quality monitoring and improvement efforts. To enhance the future of the HOS program, many stakeholders recommend the implementation of incentives to encourage the use of the data, while others identify the need to monitor the health status of plan disenrollees.Overall, the HOS program represents an important vehicle for collecting outcomes data from Medicare beneficiaries. The new Medicare Prescription Drug, Improvement, and Modernization Act (2003) mandates the collection and use of data for outcomes measurement. Consequently, it is important to improve HOS to most effectively meet the mandate.

Does Medicare Managed Care Provide Equal Treatment for Mental IllnessAcross Races?

BACKGROUND

While disparities in access to care are well documented, little is known about the quality of mental health care received by racial and ethnic minorities. We examined the quality of mental health care received by elderly enrollees in Medicare + Choice plans.

METHODS

An observational study was performed using individual-level Health Plan Employer Data and Information Set data. From 4182 to 5,016,028 individuals 65 years or older and enrolled in Medicare + Choice plans in 1999 were involved in different measures. Rates of mental health inpatient discharges, average length of stay, percentage of members receiving mental health services, rates of follow-up after hospitalization for mental illness, optimal practitioner contacts for antidepressant medication management, and effective acute- and continuation-phase treatment were assessed.

RESULTS

Compared with whites, minorities received substantially less follow-up after hospitalization for mental illness. The 30-day follow-up rates for whites, African Americans, Asians, and Hispanics were 60.2%, 42.4%, 54.1%, and 52.6%, respectively. Minorities also had lower rates of antidepressant medication management for newly diagnosed episodes of depression. The rates of optimal practitioner contacts for whites, African Americans, Asians, and Hispanics were 12.5%, 12.0%, 11.1%, and 10.6%; the rates of effective acute-phase treatment were 60.1%, 48.5%, 40.7%, and 57.6%; and the rates of effective continuation-phase treatment were 46.7%, 32.7%, 31.9%, and 39.6%, respectively. The statistically significant disparities persisted after adjusting for effects of age, sex, income, plan model, profit status, and region of the country.

CONCLUSIONS

The overall quality of mental health care for people enrolled in Medicare + Choice managed care plans is far from optimal. There are large and persistent racial differences that merit further attention to better understand their underlying causes and solutions.

The salience of choice for Medicare beneficiaries

The MedicareChoice program was created to expand choice and encourage beneficiaries to more actively consider the choices they have. This article assesses how "salient" choice is to Medicare beneficiaries. More than half of all Medicare beneficiaries in 2000 reported that they either have never considered their options to join a Medicare HMO or get supplemental coverage (44 percent) or did so last when they first became Medicare eligible (14 percent). Overall, 14 percent of Medicare beneficiaries found choice salient in 2000. Those new to Medicare or forced to switch because their plan left the program were more likely to consider choice, as expected. The multi-variate analysis shows that existing HMO enrollment is most strongly associated with salience of choice and also that this effect operates especially in the individual market. The findings of this research are consistent with the literature in highlighting the limited salience of choice to Medicare beneficiaries and the even more limited extent of actual switching that occurs in that market. There is little reason to believe that choice is more salient now than when the study was done. Policymakers who seek to encourage market-based solutions confront a dilemma: How to create incentives for a choice that most beneficiaries do not find particularly salient.

Beneficiary reported experience and voluntary disenrollment in Medicare managed care

Disenrollment rates have often been used as indicators of health plan quality, because they are readily available and easily understood by purchasers, health plans, and consumers. Over the past few years, however, indicators that more directly measure technical quality and consumer experiences with care have become available. In this observational study, we examined the relationship between voluntary disenrollment rates from Medicare managed care (MMC) plans and other measures of health plan quality. The results demonstrate that voluntary disenrollment rates are strongly related to direct measures of patient experiences with care and are an important complement to other measures of health plan performance.

Confronting The Barriers To Chronic Care Management In Medicare

This paper examines the ability of the current Medicare program--both traditional fee-for-service and risk-based contracting--to address the needs of beneficiaries with chronic conditions, who represent almost 80 percent of program enrollment. Grounded in indemnity insurance principles, including concerns about "moral hazard," the traditional Medicare program faces difficulty evolving to support of a chronic care model of health care practice. Although capitation may be the most desirable platform to support provision of care to beneficiaries with chronic conditions, the current structural limitations and problems faced in the Medicare+Choice program limit capitation's use at this time.

Racial variation in quality of care among Medicare+Choice enrollees

This paper examines racial variation in quality of and access to care experienced by elderly persons enrolled in Medicare+Choice plans. We used eight individual-level Health Plan Employer Data and Information Set (HEDIS) measures to compare whites with blacks, Asians, Hispanics, and Native Americans. Across all measures, black enrollees received lower-quality care. Hispanics and Native Americans were less likely to receive some types of care but were as likely or more likely to receive other types of care. Asians received equal or better care for all measures. It is important that studies of health care quality include all racial subgroups since the black/white patterns may not apply.

Racial disparities in the quality of care for enrollees in medicare managed care

CONTEXT

Substantial racial disparities in the use of some health services exist; however, much less is known about racial disparities in the quality of care.

OBJECTIVE

To assess racial disparities in the quality of care for enrollees in Medicare managed care health plans.

DESIGN AND SETTING

Observational study, using the 1998 Health Plan Employer Data and Information Set (HEDIS), which summarized performance in calendar year 1997 for 4 measures of quality of care (breast cancer screening, eye examinations for patients with diabetes, beta-blocker use after myocardial infarction, and follow-up after hospitalization for mental illness).

PARTICIPANTS

A total of 305 574 (7.7%) beneficiaries who were enrolled in Medicare managed care health plans had data for at least 1 of the 4 HEDIS measures and were aged 65 years or older.

MAIN OUTCOME MEASURES

Rates of breast cancer screening, eye examinations for patients with diabetes, beta-blocker use after myocardial infarction, and follow-up after hospitalization for mental illness.

RESULTS

Blacks were less likely than whites to receive breast cancer screening (62.9% vs 70.9%; P<.001), eye examinations for patients with diabetes (43.6% vs 50.4%; P =.02), beta-blocker medication after myocardial infarction (64.1% vs 73.8%; P<.005), and follow-up after hospitalization for mental illness (33.2 vs 54.0%; P<.001). After adjustment for potential confounding factors, racial disparities were still statistically significant for eye examinations for patients with diabetes, beta-blocker use after myocardial infarction, and follow-up after hospitalization for mental illness.

CONCLUSION

Among Medicare beneficiaries enrolled in managed care health plans, blacks received poorer quality of care than whites.

Health insurance knowledge among Medicare beneficiaries

OBJECTIVE

To assess the effect of new consumer information materials about the Medicare program on beneficiary knowledge of their health care coverage under the Medicare system.

DATA SOURCE

A telephone survey of 2,107 Medicare beneficiaries in the 10-county Kansas City metropolitan statistical area.

STUDY DESIGN

Beneficiaries were randomly assigned to a control group and three treatment groups each receiving a different set of Medicare informational materials. The "handbook-only" group received the Health Care Financing Administration's new Medicare & You 1999 handbook. The "bulletin" group received an abbreviated version of the handbook, and the "handbook + CAHPS" group received the Medicare & You handbook plus the Consumer Assessment of Health Plans (CAHPS) survey report comparing the quality of health care provided by Medicare HMOs. Beneficiaries interested in receiving information were oversampled.

DATA COLLECTION METHODS

Data were collected during two separate telephone surveys of Medicare beneficiaries: one survey of new beneficiaries and another survey of experienced beneficiaries. The intervention materials were mailed to sample members in advance of the interviews. Knowledge for the treatment groups was measured shortly after beneficiaries received the intervention materials.

PRINCIPAL FINDINGS

Respondents' knowledge was measured using a psychometrically valid and reliable 15-item measure. Beneficiaries who received the intervention materials answered significantly more questions correctly than control group members. The effect on beneficiary knowledge of providing the information was modest for all intervention groups but varied for experienced beneficiaries only, depending on the intervention they received.

CONCLUSIONS

The findings suggest that all of the new materials had a positive effect on beneficiary knowledge about Medicare and the Medicare + Choice program. While the absolute gain in knowledge was modest, it was greater than increases in knowledge associated with traditional Medicare information sources.

Medicare health maintenance organization benefits packages and plan performance measures

This article reports the results of an analysis of the relationship between supplemental benefits offered by Medicare+Choice (M+C) plans and their plan performance ratings. We examined two measures of plan performance: (1) plan ratings as reported in the Medicare Managed Care (MMC) Consumer Assessment of Health Care Study (CAHPS), and (2) disenrollment rates. The results of our analysis indicated that variations in plan supplemental offerings have little impact on enrollees' plan performance ratings--both overall ratings and access to care measures. Furthermore, disenrollment rates were found to be more sensitive to the availability of alternative M+C plans, either in general, or for specific benefits than to variations in benefit offerings.

Combining health plan performance indicators into simpler composite measures

We investigated how the Consumer Assessment of Health Plan Study (CAHPS) survey and the Health Plan Employer Data Information System (HEDIS) measures from Medicare managed care (MMC) plans could be combined into fewer summary performance scores. Four scores summarize most of the variability in these measures, representing (1) care at the doctor's office, (2) customer service and access, (3) vaccinations, and (4) clinical quality measures. These summaries are substantively interpretable, internally consistent, and describe the majority of variation among units in the performance scores analyzed.

Functional health outcomes as a measure of health care quality for Medicare beneficiaries

OBJECTIVE

the Medicare Health Outcomes Survey (HOS), a new quality measure in the Health Plan Employer Data and Information Set, is designed to assess physical and mental functional health outcomes of Medicare beneficiaries enrolled in Medicare+Choice organizations. We discuss the rationale for the HOS measure together with methodologic challenges in its use and interpretation, using descriptive data from the baseline Medicare HOS to illustrate some of these challenges.

DATA SOURCES/STUDY DESIGN

The 1999 Cohort 2 Medicare HOS baseline data were used for a cross-sectional descriptive analysis. A random sample of 1,000 beneficiaries from each health plan with a Medicare+Choice contract was surveyed (N = 156,842; 282 organizations included in these analyses) .

PRINCIPAL FINDINGS

The HOS measure is designed to assess a previously unmeasured dimension of quality. Plan-level variation was seen across all baseline measures of sociodemographic characteristics and illness burden. At the individual level socioeconomic position as measured by educational attainment was strongly associated with functional status. The least educated beneficiaries had the highest burden of illness on all measures examined, and there was a consistent and significant gradient in health and functional status across all levels of education. In analyses stratified by race and ethnicity, socioeconomic gradients in f un ct ion persist ed. CONCLUSIONS Despite limitations, by focusing at t en t ion on the need to improve functional health out comes among elderly Medicare beneficiaries enrolled in Medicare+Choice, the HOS can serve as an important new tool to support efforts to improve health care quality. The HOS provides valuable information at the federal, state, and health plan levels that can be used to identify, prioritize, and evaluate quality improvement interventions and monitor progress for the program overall as well as for vulnerable subgroups. To interpret the HOS as a quality measure individual-and plan-level differences in functional status and illness burden, as well as methodologic issues in health status measurement, need to be recognized and addressed.

National quality monitoring of Medicare health plans: the relationship between enrollees' reports and the quality of clinical care

BACKGROUND

The clinical quality of health plans varies. The associations between different measures of health plan quality are incompletely understood.

OBJECTIVE

To assess the relationships between enrollee reports on the quality of health plans as measured by the Consumer Assessment of Health Plans Study (CAHPS 2.0) survey and the clinical quality of care measured by the Medicare Health Plan Employer Data and Information Set (HEDIS).

DESIGN

Observational cohort study.

SAMPLE

National sample of 233 Medicare health plans that reported data using the CAHPS 2.0 survey and Medicare HEDIS during 1998.

MEASURES

Five composite measures and four ratings derived from the CAHPS survey and six measures of clinical quality from Medicare HEDIS.

RESULTS

Two composite measures ("getting needed care" and "health plan information and customer service") were significantly associated with most of the HEDIS clinical quality measures. The proportion of enrollees having a personal doctor was also significantly associated with rates of mammography, eye exams for diabetics, beta-blocker use after myocardial infarction, and follow-up after mental health hospitalization. Enrollees' ratings of health plan care were less consistently associated with HEDIS performance. In multivariable analyses, the measure of health plan communication ("health plan information and customer service") was the most consistent predictor of HEDIS performance.

CONCLUSIONS

The pattern of associations we observed among some of the measures suggests that the CAHPS survey and HEDIS are complementary quality monitoring strategies. Our results suggest that health plans that provide better access and customer service also provide better clinical care.