The Effect of Medicare Health Care Systems on Women With Breast and Cervical Cancer

Geographic Disparities in Late-Stage Breast Cancer Diagnosis Rates and Their Persistence Over Time

Background: Other than skin cancer, breast cancer is the most common cancer in the United States. Lower uptake of mammography screening is associated with higher rates of late-stage breast cancers. This study aims to show geographic patterns in the United States, where rates of late-stage breast cancer are high and persistent over time, and examines factors associated with these patterns. Materials and Methods: We examined all primary breast cancers diagnosed among all counties in 43 U.S. states with available data. We used spatial cluster analysis to identify hot spots (i.e., spatial clusters with above average late-stage diagnosis rates among counties). Demographic and socioeconomic characteristics were compared between persistent hot spots and those counties that were never hot spots. Results: Of the 2,599 counties examined in 43 states, 219 were identified as persistent hot spots. Counties with persistent hot spots (compared with counties that were never hot spots) were located in more deprived areas with worse housing characteristics, lower socioeconomic status, lower levels of health insurance, worse access to mammography, more isolated American Indian/Alaska Native, Black, or Hispanic neighborhoods, and larger income disparity. In addition, persistent hot spots were significantly more likely to be observed among poor, rural, African American, or Hispanic communities, but not among poor, rural, White communities. This analysis includes a broader range of socioeconomic conditions than those included in previous literature. Conclusion: We found geographic disparities in late-stage breast cancer diagnosis rates, with some communities experiencing persistent disparities over time. Our findings can guide public health efforts aimed at reducing disparities in stage of diagnosis for breast cancer.

Racial/Ethnic Disparities in Cervical Cancer Screening and Outcomes

Invasive cervical cancer disproportionately affects women without sufficient access to care, with higher rates among minority groups in higher-income countries and women in low-resource regions of the world. Many elements contribute to racial/ethnic disparities in the cervical cancer continuum - from screening and diagnosis to treatment and outcome. Sociodemographic factors, access to healthcare, income and education level, and disease stage at diagnosis are closely linked to such inequities. Despite the identification of such elements, racial/ethnic disparities persist, and are widening in several minority subgroups, particularly in older women, who are ineligible for human papillomavirus (HPV) vaccination and are underscreened. Recent studies suggest that racial/ethnic differences in HPV infection exist and may also have a role in observed differences in cervical cancer. In this review, we provide an overview of the current literature on racial disparities in cervical cancer screening, incidence, treatment and outcome to inform future strategies to reduce persistent inequities.

Exploring the relationship between physical well-being and healthy lifestyle changes among European- and Latina-American breast and cervical cancer survivors

BACKGROUND

Cancer and its treatments have a lingering and often negative impact on survivors' physical well-being. The physical sequelae impinge on daily functioning and overall HRQOL, and perhaps influence lifestyle changes post-cancer. This study aims to examine: (1) physical well-being items that are associated with low overall health-related quality of life; and (2) the relationship between physical well-being outcomes and healthy lifestyle changes by cancer type.

METHODS

This study employed a cross-sectional design with mixed sampling methods. In total 922 European- (n=452) and Latina-American (n=470) breast (BCS) or cervical cancer survivors (CCS) were recruited from the California Cancer Surveillance Program and Los Angeles area hospital registries. Item responses from survivors in the lowest quartile of total quality of life scores and percentages reflecting low physical well-being levels were calculated.

RESULTS

A statistical approach to individual items provides unique and valuable measurement and clinical information above and beyond physical well-being total scores. Physical well-being item responses varied according to ethnicity, income, and education. BCS and CCS showed different patterns in the relationship between physical well-being items and lifestyle changes. Specifically, exercise was significantly related to physical well-being items for BCS, while diet changes were significantly associated with physical well-being for CCS.

CONCLUSIONS

Results reveal unique correlates of physical well-being items by cancer type, ethnicity, and lifestyle changes. Clinically, this study highlights the need for greater consideration of individual and medical characteristics in developing culturally sensitive and patient responsive interventions to promote healthy lifestyles and improve survivorship outcomes.

Geographic disparities in late-stage breast cancer diagnosis in California

Using cancer registry data for the population of California women aged 67+ with breast cancers, we estimated random intercept logistic models to examine how two socio-ecological predictors (residential isolation and poverty) were associated with probability of late-stage diagnosis for breast cancer. Using the multilevel modeling results, we calculated fully adjusted predicted probabilities associated with women in each Medical Service Study Area (MSSA) in California and classified the areas into two distinct groups: MSSAs with predicted rates below the 25th percentile (presumably the better outcome areas) and MSSAs with predicted rates above the 75th percentile (presumably the worse outcome areas) for two minority groups. Some areas had better outcomes for one group but worse outcomes for the other, suggesting that interventions to improve outcomes need different strategies for different groups in the same areas. Using information from geographic risk factors and multilevel modeling, this study informs interventions designed to reduce disparities in breast cancer outcomes.

Earlier stage at diagnosis and improved survival among Medicare HMO patients with breast cancer

OBJECTIVE

We sought to evaluate differences in the stage at diagnosis and the survival of breast cancer patients enrolled in two different Medicare healthcare delivery systems: fee for service (FFS) and health maintenance organizations (HMO).

METHODS

We used a linkage of two national databases, the Medicare database from the Centers for Medicare and Medicaid Services (CMS), and the National Cancer Institute's (NCI) Surveillance, Epidemiology, and End Results (SEER) program database, to evaluate differences in demographic data, stage at diagnosis, and survival in patients with breast cancers over the period 1985-2001.

RESULTS

Medicare patients enrolled in HMOs were diagnosed at an earlier stage of diagnosis than FFS patients. HMO patients diagnosed with breast cancer had improved survival, and these differences remained even after controlling for potential confounders. Specifically, breast cancer patients enrolled in HMOs had 9% increased probability of survival (hazard ratio [HR] 0.91, 95% confidence interval [CI] 0.88-0.93) than their counterparts enrolled in FFS. These findings persisted even when patients had a cancer diagnosis before their breast cancer.

CONCLUSIONS

Improved survival among breast cancer patients in HMOs compared with FFS is likely due to a combination of factors, including but not limited to earlier stage at the time of diagnosis.

Diagnostic and therapeutic delays among a multiethnic sample of breast and cervical cancer survivors

BACKGROUND

Several publications reporting on health disparities document that ethnic minorities disproportionately experience delays in healthcare access, delivery, and treatment. However, few studies examine factors underlying access and receipt of healthcare among cancer survivors from the patient perspective. This study explores diagnostic and therapeutic care delays among a multiethnic sample of breast and cervical cancer survivors and examines contextual factors influencing diagnostic and therapeutic care delays.

METHODS

Population-based sampling and a cross-sectional design were used to recruit 1377 survivors (breast cancer, n = 698; cervical cancer, n = 679). This multiethnic sample included 449 European American, 185 African American, 468 Latina American, and 275 Asian American survivors.

RESULTS

Latina Americans were more likely to report diagnostic delays (P = .003), whereas African Americans were more likely to report therapeutic delays (P = .007). In terms of cancer type, cervical cancer survivors were more likely to report diagnostic (P = .004) and therapeutic delays (P = .000) compared with breast cancer survivors. "Fear of finding cancer" was the most frequently cited reason for diagnostic delays, and "medical reasons" were most frequently cited for therapeutic delays.

CONCLUSIONS

Due in part to a higher proportion of diagnostic and therapeutic delays, ethnic minorities endure greater cancer burden, including poorer survival and survivorship outcomes. The medical community must recognize the impact of existing psychological and cultural dimensions on diagnostic care, as well as the personal and healthcare system level barriers that contribute to therapeutic delays.

The impact of a change in Medicare reimbursement policy and HEDIS measures on stage at diagnosis among Medicare HMO and fee-for-service female breast cancer patients

OBJECTIVE

To examine the effects of health plan enrollment [health maintenance organizations (HMO) or fee-for-service (FFS)], a change in Medicare reimbursement policy which allowed for annual rather than biennial mammograms, and Health Plan Employer Data Information Set (HEDIS) measures on stage at diagnosis among older women with breast cancer.

METHODS

We used the population-based Surveillance Epidemiology and End Results (SEER)-Medicare database to identify all elderly women age 65-74 who were diagnosed with breast cancer from 1994 to 2002. We compared stage at diagnosis, demographic characteristics, and tumor characteristics for FFS or HMO enrollment in the periods before and after the 1998 policy change. We compared the effect of women age 65-69 whose mammography use in the HMO system is measured by HEDIS and those who are older (age 70-74).

RESULTS

We identified 20,106 women enrolled in FFS Medicare, and 10,751 women enrolled in an HMO. Women ages 65-74 who were enrolled in a Medicare HMO were more likely to be diagnosed at an early stage both before and after the policy change, but the disparity decreased from 4.7% to 2.3%, a relative change of 51.1%. The disparity was not specific to the ages included in the HEDIS measure.

CONCLUSIONS

A decrease of 51.1% in the HMO-FFS disparity in breast cancer stage at diagnosis coincided with the 1998 change in Medicare mammography reimbursement policy. The existence of HEDIS measures for HMOs does not create a disparity in stage at diagnosis between those whose mammograms are measured by HEDIS (younger women) and those whose are not (older women).

The effect of medicare health care delivery systems on survival for patients with breast and colorectal cancer

BACKGROUND

Two of the most common types of health care delivery systems in the U.S. are fee-for-service (FFS) and managed care systems such as health maintenance organizations (HMO). Differences may exist in patient outcomes depending on the health care delivery system in which they are enrolled. We evaluated differences in the survival of patients with breast and colorectal cancer at diagnosis between the two Medicare health care delivery systems (FFS and HMO).

METHODS

We used a linkage of two national databases, the Medicare database from the Centers for Medicare and Medicaid Services, and the National Cancer Institute's Surveillance, Epidemiology, and End Results program database, to evaluate differences in demographic data, stage at diagnosis, and survival between breast and colorectal cancer over the period 1985 to 2001.

RESULTS

Medicare patients enrolled in HMOs were diagnosed at an earlier stage of diagnosis than FFS patients. HMO patients diagnosed with breast and colorectal cancer had improved survival, and these differences remained even after controlling for potential confounders (such as stage at diagnosis, age, race, socioeconomic status, and marital status). Specifically, patients enrolled in HMOs had 9% greater survival in hazards ratio if they had breast cancer, and 6% if they had colorectal cancer.

CONCLUSIONS

Differences exist in survival among patients in HMOs compared with FFS. This is likely due to a combination of factors, including but not limited to, earlier stage at the time of diagnoses.

Reducing racial/ethnic disparities in female breast cancer: screening rates and stage at diagnosis

OBJECTIVES

We assessed whether population rates of mammography screening, and their changes over time, were associated with improvements in breast cancer stage at diagnosis and whether the strength of this association varied by race/ethnicity.

METHODS

We analyzed state cancer registry data linked to socioeconomic characteristics of patients' areas of residence for 1990-1998 time trends in the likelihood of early stage diagnosis. We appended each cancer registry record with matching subgroup estimates of self-reported mammography screening.

RESULTS

Trends in screening and stage at diagnosis were consistent within groups, but African American women had a significantly lower proportion of early stage cancers despite an advantage in screening. Population screening rates were significantly associated with early diagnosis, with a weaker association in African American women than White women (odds ratio [OR] = 1.70; P<.0001 vs OR=2.02; P<.0001, respectively).

CONCLUSIONS

Improvements in screening rates during the 1990s across racial/ethnic groups appear to have contributed significantly to earlier diagnosis within each group, but a smaller effect in African American women should raise concerns. A key health policy challenge is to ensure that screening effectively translates into earlier diagnosis.