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

Behaviour within a Clinical Trial and Implications for Mammography Guidelines

Mammography guidelines have weakened in response to evidence that mammograms diagnose breast cancers that would never eventually cause symptoms, a phenomenon called "overdiagnosis." Given concerns about overdiagnosis, instead of recommending mammograms, US guidelines encourage women aged 40-49 to get them as they see fit. To assess whether these guidelines target women effectively, I propose an approach that examines mammography behavior within an influential clinical trial that followed participants long enough to find overdiagnosis. I find that women who are more likely to receive mammograms are healthier and have higher socioeconomic status. More importantly, I find that the 20-year level of overdiagnosis is at least 3.5 times higher among women who are most likely to receive mammograms. At least 36% of their cancers are overdiagnosed. These findings imply that US guidelines encourage mammograms among healthier women who are more likely to be overdiagnosed by them. Guidelines in other countries do not.

Screening and Selection: The Case of Mammograms

We analyze selection into screening in the context of recommendations that breast cancer screening start at age 40. Combining medical claims with a clinical oncology model, we document that compliers with the recommendation are less likely to have cancer than younger women who select into screening or women who never screen. We show this selection is quantitatively important: shifting the recommendation from age 40 to 45 results in three times as many deaths if compliers were randomly selected than under the estimated patterns of selection. The results highlight the importance of considering characteristics of compliers when making and designing recommendations.

Lack of validity of self-reported mammography data

This qualitative literature review aimed to describe the totality of peer-reviewed scientific evidence from 1990 to 2017 concerning validity of self-reported mammography. This review included articles about mammography containing the words accuracy, validity, specificity, sensitivity, reliability or reproducibility; titles containing self-report, recall or patient reports, and breast or 'mammo'; and references of identified citations focusing on evaluation of 2-year self-reports. Of 45 publications meeting the eligibility criteria, 2 conducted in 1993 and 1995 at health maintenance organisations in Western USA which primarily served highly educated whites provided support for self-reports of mammography over 2 years. Methodological concerns about validity of self-reports included (1) telescoping, (2) biased overestimates particularly among black women, (3) failure to distinguish screening and diagnostic mammography, and (4) failure to address episodic versus consistent mammography use. The current totality of evidence supports the need for research to reconsider the validity of self-reported mammography data as well as the feasibility of alternative surveillance data sources to achieve the goals of the Healthy People Initiative.

Cancer preventive services, socioeconomic status, and the Affordable Care Act

BACKGROUND

Out-of-pocket expenditures are thought to be an important barrier to the receipt of cancer preventive services, especially for those of a lower socioeconomic status (SES). The Affordable Care Act (ACA) eliminated out-of-pocket expenditures for recommended services, including mammography and colonoscopy. The objective of this study was to determine changes in the uptake of mammography and colonoscopy among fee-for-service Medicare beneficiaries before and after ACA implementation.

METHODS

Using Medicare claims data, this study identified women who were 70 years old or older and had not undergone mammography in the previous 2 years and men and women who were 70 years old or older, were at increased risk for colorectal cancer, and had not undergone colonoscopy in the past 5 years. The receipt of procedures in the 2-year period before the ACA's implementation (2009-2010) and after its implementation (2011 to September 2012) was also identified. Multivariate generalized estimating equation models were used to determine the independent association and county-level quartile of median income and education with the receipt of testing.

RESULTS

For mammography, a lower SES quartile was associated with less uptake, but the post-ACA disparities were smaller than those in the pre-ACA period. In addition, mammography rates increased from the pre-ACA period to the post-ACA period in all SES quartiles. For colonoscopy, in both the pre- and post-ACA periods, there was an association between uptake and educational level and, to some extent, income. However, there were no appreciable changes in colonoscopy and SES after implementation of the ACA.

CONCLUSIONS

The removal of out-of-pocket expenditures may overcome a barrier to the receipt of recommended preventive services, but for colonoscopy, other procedural factors may remain as deterrents. Cancer 2017;123:1585-1589. © 2017 American Cancer Society.

Impact of oncologist payment method on health care outcomes, costs, quality: a rapid review

BACKGROUND

The incidence of cancer and the cost of its treatment continue to rise. The effect of these dual forces is a major burden on the system of health care financing. One cost containment approach involves changing the way physicians are paid. Payers are testing reimbursement methods such as capitation and prospective payment while also evaluating how the changes impact health outcomes, resource utilization, and quality of care. The purpose of this study is to identify evidence related to physician payment methods' impacts, with a focus on cancer control.

METHODS

We conducted a rapid review. This involved defining eligibility criteria, identifying a search strategy, performing study selection according to the eligibility criteria, and abstracting data from included studies. This process was accompanied by a gray literature search for special topics.

RESULTS

The incentives in fee-for-service payment systems generally lead to health care services being applied inconsistently because providers practice independently with few systems in place for developing treatment protocols and practice reviews. This inconsistency is pronounced in cancer care because much of the total per patient spending occurs in the last month of life. Some insurers are predicting that this variation can be reduced through the use of prospective or bundled payments combined with decision support systems. Workload, recruitment, and retention are all affected by changes to physician payment models; effects seem to be magnified in the specialist context as their several extra years of training lower their overall supply.

CONCLUSIONS

Experimentation with physician payment methods has tended to neglect cancer care providers. Policymakers designing cancer-focused physician reimbursement pilot programs should incorporate quality measurement since very ill patients may receive too little treatment when payment models do not cover oncologists' total costs, e.g., fee-for-service systems whose prices do not account for the possible presence of other diseases.

How Does Managed Care Improve the Quality of Breast Cancer Care Among Medicare-Insured Minority Women?

PURPOSE

The aim of this study is to investigate if evidence-based clinical guidelines are implemented equitability among ethnic minority breast cancer patients using Medicare Advantage and investigate if presumed advantages of managed care over fee-for-service are greater for minorities than for Whites.

METHODS

Data from the Surveillance, Epidemiology, and End Results and Medicare were used to examine 70,755 women over age 65 diagnosed with early stage breast cancer between 2005 and 2009. Implementation of two clinical guidelines was assessed: receipt of radiation therapy after breast conserving surgery and estrogen receptor status documentation. Multilevel logistic regression and inverse propensity weighting controlled for confounding.

RESULTS

African Americans are still less likely than Whites to receive radiation therapy after breast-conserving surgery, whether they use Medicare fee-for-service (OR 95 % CI) = 0.90 (0.83, 0.98) or managed care (OR 95 % CI) = 0.87 (0.76, 1.00). Differences between receipt of radiation therapy by insurance plan type was nonexistent. Relative to FFS, the use of managed care improved the odds of having estrogen receptor status documented by 44 % in African Americans, (OR 95 % CI) = 1.44 (1.15, 1.83) and by 42 % in Latina patients (OR 95 % CI) = 1.42 (1.17, 1.78).

CONCLUSIONS

Compared to Medicare fee-for-service, ethnic and racial disparities among Medicare Advantage users were reduced. We observed fewer disparities, but not an elimination of disparities, among Medicare Advantage enrollees receiving breast cancer care with an organizational and patient component of care. This suggests managed care may still need to focus on minority patient empowerment and involvement in care.

Changes in Receipt of Cancer Screening in Medicare Beneficiaries Following the Affordable Care Act

BACKGROUND

The Affordable Care Act (ACA) removed copayments for screening mammography and colonoscopy in Medicare beneficiaries, but its clinical impact is unknown.

METHODS

Using a 5% random sample of Medicare claims from 2009 through 2012 in individuals age 70 years or older who were due for screening, we examined claims for screening mammography and screening or surveillance colonoscopy for two years prior to ACA (2009-2010) and two years post-ACA (2011-2012). Receipt of the procedures at the patient level was compared across years using generalized estimating equations. Statistical tests were two-sided.

RESULTS

Compared with 2009, we found an increase in mammography uptake during the ACA coverage period, with multivariable odds ratios (MOR) of 1.22 (95% confidence interval [CI] = 1.20 to 1.25, P < .001) for 2011 and 1.17 (95% CI = 1.15 to 1.20, P < .001) for 2012 and less change in 2010 (OR = 1.03, 95% CI = 1.01 to 1.05, P = .01). In contrast to mammography, uptake of screening or surveillance colonoscopy decreased in 2012 (MOR = 0.95, 95% CI = 0.92 to 0.98, P = .002) compared with 2009, with no change in 2010 (MOR = 1.01, 95% CI = 0.99 to 1.04, P = .47) or 2011 (MOR = 1.01, 95% CI = 0.99 to 1.04, P = .34). Other factors associated with procedure receipt included younger age and prior preventive health visits. In an analysis restricted to patients age 70 to 74 years, colonoscopy use increased slightly in 2011 but was unchanged in 2012, and the findings by year for mammography were consistent with the main analysis.

CONCLUSIONS

Following ACA implementation with concomitant reduction in out-of-pocket expenditures, there was a statistically significant increment in mammography uptake but not colonoscopy. This suggests that affordability is a necessary but not sufficient facilitator of preventive services.

Mammography Screening Among the Elderly: A Research Challenge

BACKGROUND

Randomized trials demonstrate clear benefits of mammography screening in women through age 74 years. We explored age- and race-specific rates of mammography screening and breast cancer mortality among women aged 69 to 84 years.

METHODS

We analyzed Medicare claims data for women residing within Surveillance, Epidemiology and End Results geographic areas from 1995 to 2009 from 64,384 non-Hispanic women (4886 black and 59,498 white) and ascertained all primary breast cancer cases diagnosed between ages 69 and 84 years. The exposure was annual or biennial screening mammography during the 4 years immediately preceding diagnosis. The outcome was breast cancer mortality during the 10 years immediately after diagnosis.

RESULTS

After adjustment for stage at diagnosis, radiation therapy, chemotherapy, comorbid conditions, and contextual socioeconomic status, hazard ratios (and 95% confidence intervals) for breast cancer mortality relative to no/irregular mammography at 10 years for women aged 69 to 84 years at diagnosis were 0.31 (0.29-0.33) for annual mammography and 0.47 (0.44-0.51) for biennial mammography among whites and 0.36 (0.29-0.44) for annual mammography and 0.47 (0.37-0.58) for biennial mammography among blacks. Trends were similar at 5 years overall and stratified by ages 69 to 74 years, 75 to 78 years, and 79 to 84 years.

CONCLUSIONS

In these Medicare claims and Surveillance, Epidemiology and End Results data, elderly non-Hispanic women who self-selected for annual mammography had lower 10-year breast cancer mortality than corresponding women who self-selected for biennial or no/irregular mammography. These findings were similar among black and white women. The data highlight the evidentiary limitations of data used for current screening mammography recommendations.

Racial and ethnic differences in use of mammography between Medicare Advantage and traditional Medicare

BACKGROUND

Breast cancer is a leading cause of mortality for women in all racial/ethnic groups. We compared use of mammography by race/ethnicity in Medicare health maintenance organizations (HMOs), preferred provider organizations (PPOs), and traditional Medicare.

METHODS

We matched 495 836 women in HMOs and 81 480 women in PPOs who were aged 65 to 69 years during 2009 to women enrolled in traditional Medicare by race/ethnicity, Medicaid eligibility status, and geographic area. We identified mammography use from the Healthcare Effectiveness Data and Information Set for Medicare HMOs and PPOs and from claims data for traditional Medicare with the same specifications. We then compared racial/ethnic differences in rates of mammography in HMOs and PPOs to matched populations in traditional Medicare and estimated differences with z tests. All statistical tests were two-sided.

RESULTS

Relative to matched white women, mammography rates were statistically significantly higher for black, Hispanic, and Asian/Pacific Islander women in HMOs (6.1, 5.4, and 0.9 percentage points, respectively; all P ≤ .003) and statistically significantly lower for all three groups in traditional Medicare (3.3, 7.4, and 7.7 percentage points, respectively; all P < .001). Similar improvements in mammography rates also were observed in PPOs among all minority groups relative to traditional Medicare.

CONCLUSIONS

Higher rates of mammography in HMOs and PPOs were associated with a reversal of racial and ethnic differences observed in traditional Medicare. These differences may be related to lower patient cost-sharing and better systems to promote preventive services in managed care plans, as well as unmeasured characteristics or beliefs of minority women who enroll in these health plans relative to those in traditional Medicare.

Trends in immediate breast reconstruction across insurance groups after enactment of breast cancer legislation

BACKGROUND

To improve access to breast reconstruction for mastectomy patients, the United States enacted the Women's Health and Cancer Rights Act in January of 1999. The objective of the current study was to evaluate the impact of this legislation on patients with different insurance plans.

METHODS

Women aged ≥18 years who underwent mastectomy for cancer were identified in the Nationwide Inpatient Sample database (2000-2009) and were classified according to their immediate breast reconstruction (IBR) status. Trends in rates of IBR were described for each insurance category. Multivariable logistic regression analysis with adjustment for age, race, estimated household income, and Elixhauser comorbidity index was performed to evaluate the relation between insurance status and IBR.

RESULTS

In total, 168,236 patients were identified who underwent a mastectomy during the study interval. Across the 10-year study period, rates of IBR increased 4.2-fold in Medicaid patients, 2.9-fold in Medicare patients, 2.6-fold in privately insured patients, and 2.1-fold in self-pay patients (P < .01). However, after adjustment for confounders, women without private insurance were less likely to undergo IBR compared with women who had private insurance (Medicaid: odds ratio [OR], 0.34; 95% confidence interval [CI], 0.32-0.37; Medicare: OR, 0.53; 95% CI, 0.49-0.58; self-pay: OR, 0.43; 95% CI, 0.37-0.50; other types of nonprivate insurance: OR, 0.64, 95% CI, 0.56-0.73).

CONCLUSIONS

After the enactment of policy designed to improve access to IBR, Medicaid and Medicare patients experienced the greatest relative increase in rates of IBR. Although policy changes had the most impact on traditionally underserved populations, disparities still exist. Future studies should endeavor to understand why such disparities have persisted.