Effectiveness of Interventions for Breast Cancer Screening in African American Women: A Meta-Analysis

Latent pathway-based Bayesian models to identify intervenable factors of racial disparities in breast cancer stage at diagnosis

PURPOSE

We built Bayesian Network (BN) models to explain roles of different patient-specific factors affecting racial differences in breast cancer stage at diagnosis, and to identify healthcare related factors that can be intervened to reduce racial health disparities.

METHODS

We studied women age 67-74 with initial diagnosis of breast cancer during 2006-2014 in the National Cancer Institute's SEER-Medicare dataset. Our models included four measured variables (tumor grade, hormone receptor status, screening utilization and biopsy delay) expressed through two latent pathways-a tumor biology path, and health-care access/utilization path. We used various Bayesian model assessment tools to evaluate these two latent pathways as well as each of the four measured variables in explaining racial disparities in stage-at-diagnosis.

RESULTS

Among 3,010 Black non-Hispanic (NH) and 30,310 White NH breast cancer patients, respectively 70.2% vs 76.9% were initially diagnosed at local stage, 25.3% vs 20.3% with regional stage, and 4.56% vs 2.80% with distant stage-at-diagnosis. Overall, BN performed approximately 4.7 times better than Classification And Regression Tree (CART) (Breiman L, Friedman JH, Stone CJ, Olshen RA. Classification and regression trees. CRC press; 1984) in predicting stage-at-diagnosis. The utilization of screening mammography is the most prominent contributor to the accuracy of the BN model. Hormone receptor (HR) status and tumor grade are useful for explaining racial disparity in stage-at diagnosis, while log-delay in biopsy impeded good prediction.

CONCLUSIONS

Mammography utilization had a significant effect on racial differences in breast cancer stage-at-diagnosis, while tumor biology factors had less impact. Biopsy delay also aided in predicting local and regional stages-at-diagnosis for Black NH women but not for white NH women.

Big advocacy, little recognition: the hidden work of Black patients in precision medicine

As cost-effective next-generation genome sequencing rapidly develops, calls for greater inclusion of Black people in genomic research, policy, and practice are necessary for effective translation of genomic science into precision population health and medicine. Employing a community-based participatory mixed methods research design, we developed a semi-structured survey that was disseminated to three cancer advocacy organizations. Of the 81 survey respondents 49 (60%) self-identified as Black, and 26 (32%) indicated a prior breast cancer diagnosis. Black participants' expressed concerns about genetic testing were evenly distributed between concerns that could be addressed through genetic counseling (24%) and concerns about subsequent use of their genetic data (27%). Patient advocates contributed to contextualization of respondent concerns in terms of community experiences. Although genetic counseling services and policies governing genomic data use are not always accessible to many Black communities, advocates on our research team provided a bridge to discussion of the intersection between respondent concerns and the roles advocates play in filling gaps in access to genetic counseling and data governance. Concerns expressed by Black patients underscore a shared need among all patients for access to education, inclusion in research, and assurances regarding the use and handling of genetic data. Black cancer patients have joined in patient-led efforts to overcome systemic inequities in cancer care to improve their health outcomes through representation. Often their efforts are overshadowed by a relentless burden of continued health disparities. Future research should support their hidden work as a means to reduce barriers and improve representation in genomic databases.

The Integration of Value Assessment and Social Network Methods for Breast Health Navigation Among African Americans

OBJECTIVES

A major strategy to reduce the impact of breast cancer (BC) among African Americans (AA) is patient navigation, defined here as individualized assistance for reducing barriers to healthcare use. The primary focus of this study was to estimate the added value of incorporating breast health promotion by navigated participants and the subsequent BC screenings that network members may obtain.

METHODS

In this study, we compared the cost-effectiveness of navigation across 2 scenarios. First, we examine the effect of navigation on AA participants (scenario 1). Second, we examine the effect of navigation on AA participants and their networks (scenario 2). We leverage data from multiple studies in South Chicago. Our primary outcome (BC screening) is intermediate, given limited available quantitative data on the long-term benefits of BC screening for AA populations.

RESULTS

When considering participant effects alone (scenario 1), the incremental cost-effectiveness ratio was $3845 per additional screening mammogram. When including participant and network effects (scenario 2), the incremental cost-effectiveness ratio was $1098 per additional screening mammogram.

CONCLUSION

Our findings suggest that inclusion of network effects can contribute to a more precise, comprehensive assessment of interventions for underserved communities.

Factors associated with breast cancer screening services use among women in the United States: An application of the Andersen's Behavioral Model of Health Services Use

This study applied Andersen's Behavioral Model of Health Services Use to examine predisposing, enabling, and need factors associated with adherence to the United States Preventive Services Task Force (USPSTF) guidelines for breast cancer screening (BCS). Multivariable logistic regression was used to determine factors of BCS services utilization among 5484 women aged 50-74 from the 2019 National Health Interview Survey. Predisposing factors significantly associated with use of BCS services were: being a Black (odds-ratios [OR]:1.49; 95% confidence interval [CI]:1.14-1.95) or a Hispanic woman (OR:2.25; CI:1.62-3.12); being married/partnered (OR:1.32, CI:1.12-1.55); having more than a bachelor's degree (OR: 1.62; CI:1.14-2.30); and living in rural areas (OR:0.72; CI:0.59-0.92). Enabling factors were: poverty level [≤138% federal poverty level (FPL) (OR:0.74; CI:0.56-0.97), >138-250% FPL (OR:0.77; CI:0.61-0.97), and > 250-400% FPL (OR:0.77; CI:0.63-0.94)]; being uninsured (OR:0.29; CI:0.21-0.40); having a usual source of care at a physician office (OR:7.27; CI:4.99-10.57) or other healthcare facilities (OR:4.12; CI:2.68-6.33); and previous breast examination by a healthcare professional (OR:2.10; CI:1.68-2.64). Need factors were: having fair/poor health (OR:0.76; CI:0.59-0.97) and being underweight (OR:0.46; CI:0.30-0.71). Disparities in BCS services utilization by Black and Hispanic women have been reduced. Disparities still exist for uninsured and financially restrained women living in rural areas. Addressing disparities in BCS uptake and improving adherence to USPSTF guidelines may require revamping policies that address disparities in enabling resources, such as health insurance, income, and health care access.

Breast Cancer Champions: a peer-to-peer education and mobile mammography program improving breast cancer screening rates for women of African heritage

INTRODUCTION

Nationally, women of African heritage die at higher rates from breast cancer than women of other races or ethnicities. We developed Breast Cancer Champions (BCC) a peer-to-peer education program, which recruited 12 women and deployed them into the community in August 2020 during the height of the COVID pandemic. BCC aims to improve breast cancer screening rates for women of African heritage through peer-to-peer education, which has proven successful for addressing cancer-related health disparities.

METHODS

BCC community experts, or "Champions," are peer-to-peer educators that conduct awareness and screening events in their communities. Champion's education activities were tracked by bi-weekly check-in calls, which recorded the activity type, location, and the number of participants for each event. We used spatial and statistical analyses to determine the efficacy of the program at increasing screening rates for women within the area of Champion activity versus women outside of their activity area.

RESULTS

Over 15 months, Champions conducted 245 in-person or online events to engage women in their community for screening. More women of African heritage were screened in areas Champions were active during the intervention compared to historical data comparing areas outside of the Champion activity in the prior 15 months (X ² = 3.0845, p = 0.079).

CONCLUSION

BCC successes could be attributed to pivoting to online community building when in-person events were restricted and enabling Champions to design and conduct their own events, which increased outreach possibilities. We demonstrate improved screening outcomes associated with an updated peer-to-peer education program.

Big Advocacy, Little Recognition: The Hidden Work of Black Patients in Precision Medicine

Public health genomics prioritizes effective and ethical translation of genomic science into population health precision medicine. With the rapid development of cost-effective, next-generation genome sequencing, calls are growing for greater inclusion of Black people in genomic research, policy, and practice. Genetic testing is often the first step in precision medicine. This study explores racial differences in patient concerns about genetic testing for hereditary breast cancer. Employing a community-based participatory mixed methods research design, we developed a semi-structured survey that was shared broadly. There were 81 survey respondents, of which, forty-nine (60%) self-identified as Black, twenty-six (32%) indicated they had a history of a breast cancer diagnosis, or had received BRCA genetic testing. Black participants who expressed concerns about genetic testing were fairly equally distributed between concerns that could be addressed with genetic counseling (24%) and concerns about the subsequent use of their genetic data (27%). The concerns expressed by the participants in our study underscore a need for transparent disclosures and assurances regarding the use and handling of genetic data. These findings should be viewed in context with patient-led efforts to overcome systemic inequities in cancer care, as Black cancer patients have joined forces with advocates and researchers to develop protective health data initiatives and to improve their representation in genomic datasets. Future research should prioritize the information needs and concerns of Black cancer patients. Interventions should be developed to support their hidden work as a means to reduce barriers and improve representation in precision medicine.

Predictors of behavioral cancer risk factors and preventive behaviors among Nebraskans

BACKGROUND

The overall incidence rate of cancer in Nebraska is higher than the national average with cancer being the second leading cause of death in the state. Interventions are required to reduce the cancer burden; however, further research is first needed to identify behavioral cancer risk factors and preventive behaviors among Nebraskans that can be targeted.

METHODS

A statewide cross-sectional survey of Nebraskans aged 19 and older was conducted in 2019 using an address-based sampling method (n = 1640). Multivariable logistic regression was used to examine factors associated with being up-to-date on cancer screening and with behavioral cancer risk factors and preventive behaviors.

RESULTS

93.42% of Nebraskans did not meet the daily recommended consumption of fruits and vegetables, and 71.51% did not meet weekly physical activity guidelines. The proportion of adults up to date on cancer screening was 64.57% for breast, 68.83% for cervical, 69.01% for colorectal, and 24.07% for skin cancers. Individuals 65-74 (OR: 3.40, 95% CI: 1.52-7.62) and 75 or older (OR: 3.30, 95% CI: 1.35-8.07) were more likely to be current with their colorectal cancer screening compared to ages 50-64. Hispanics were less likely to be current with mammograms (OR: 0.06, 95% CI: 0.01-0.71) and ever screened for cervical cancer (OR:0.13, 95% CI: 0.02-0.94) compared to Non-Hispanic Whites.

CONCLUSIONS

Disparities in cancer screening and risk and preventive behaviors exist in Nebraska.

IMPACT

The study highlights a need for continuing efforts to improve preventive cancer behaviors for the entire population as well as some high-risk populations in Nebraska.

Navigated African American breast cancer patients as incidental change agents in their family/friend networks

BACKGROUND

Patient navigation is an increasingly widespread intervention to address the persistent, severe, and disproportionate breast cancer (BC) burden that African Americans (AA) face. Navigation may have more widespread effects than previously estimated due to patient-driven diffusion of BC information.

METHODS

This pilot study examined the network effects of a randomized controlled trial via recruitment of navigated and non-navigated AA BC patients as well as their network members. We estimated study arm differences in patient BC promotion (i.e., number of individuals to whom BC patients promote BC screening) and network BC screening (i.e., % BC screening among network members).

RESULTS

Among our sample of 100 AA BC patients, navigated patients promoted BC screening to more individuals than non-navigated patients. BC patients were more likely to promote BC screening to children and individuals with whom they communicated more frequently. Some models further suggested more network BC screening among "navigated" network members relative to "non-navigated" network members.

CONCLUSIONS

Navigated AA patients promoted BC screening more widely throughout their networks than non-navigated AA BC patients. There were also suggestive findings regarding increased BC screening among their network members. Our pilot study highlights the potential for social network analysis to improve the precision of intervention effect estimates and to inform future innovations (e.g., integrating navigation and network-based interventions) with multilevel effects on cancer health disparities.

Association of Population Screening for Breast Cancer Risk With Use of Mammography Among Women in Medically Underserved Racial and Ethnic Minority Groups

IMPORTANCE

Black women bear a disproportionate burden of breast cancer mortality in the US, in part due to inequities in the use of mammography. Population screening for breast cancer risk in primary care is a promising strategy for mitigating breast cancer disparities, but it is unknown whether this strategy would be associated with increased mammography rates in underserved women of racial and ethnic minority groups.

OBJECTIVE

To examine whether providing individualized breast cancer risk estimates is associated with an increase in the rate of screening mammography.

DESIGN, SETTING, AND PARTICIPANTS

A cohort study was conducted in women receiving individualized risk estimates as part of routine primary health care at federally qualified health centers in medically underserved communities in Chicago, Illinois. The study was conducted from November 5, 2013, to December 19, 2014, with data acquisition completed on March 5, 2017; data analysis was performed from December 30, 2020, to February 2, 2021. A total of 347 women aged 25 to 69 years without a personal history of breast cancer presenting for an annual visit with their primary care clinician were enrolled.

EXPOSURES

Breast cancer risk estimates were obtained with validated risk assessment tools as a standard component of the clinic check-in process. One of 4 women at average risk and all women at high risk were invited to participate in the study.

MAIN OUTCOMES AND MEASURES

The primary outcome was the mammography rate during 18 months of usual care compared with the rate during 18 months after implementation of risk assessment.

RESULTS

Of the 347 women enrolled, 188 were age-eligible for mammography and were included in the analysis (mean [SD] age, 50.8 [7.04] years); 70 women (37.2%) were Hispanic, 114 (60.6%) were non-Hispanic African American, and 4 (2.1%) were from other racial and ethnic groups (4 non-Hispanic White women). Ninety-eight women (52.1%) had an average risk of developing breast cancer and 90 (47.9%) were at high risk. Overall, there was a nonsignificant increase in the mammography rate, from 38.8% during usual care to 48.9% following implementation of risk assessment (odds ratio, 1.37; 95% CI, 0.92-2.03). In preplanned subgroup analysis, the mammography rate among women at high risk was significantly higher after vs before risk assessment (51.1% vs 36.6%; odds ratio, 1.88; 95% CI, 1.10-3.23).

CONCLUSIONS AND RELEVANCE

In this study, providing individualized breast cancer risk estimates as a component of primary health care in federally qualified health centers was associated with increased use of mammography among women of racial and ethnic minority groups who were at high risk. Implementation of this approach in underserved communities could promote equity in the use of mammography and reduce racial disparities in breast cancer mortality. This strategy warrants further investigation.

Modelling tool to support decision-making in the NHS Health Check programme: workshops, systematic review and co-production with users

BACKGROUND

Local authorities in England commission the NHS Health Check programme to invite everyone aged 40-74 years without pre-existing conditions for risk assessment and eventual intervention, if needed. However, the programme's effectiveness, cost-effectiveness and equity impact remain uncertain.

AIM

To develop a validated open-access flexible web-based model that enables local commissioners to quantify the cost-effectiveness and potential for equitable population health gain of the NHS Health Check programme.

OBJECTIVES

The objectives were as follows: (1) co-produce with stakeholders the desirable features of the user-friendly model; (2) update the evidence base to support model and scenario development; (3) further develop our computational model to allow for developments and changes to the NHS Health Check programme and the diseases it addresses; (4) assess the effectiveness, cost-effectiveness and equity of alternative strategies for implementation to illustrate the use of the tool; and (5) propose a sustainability and implementation plan to deploy our user-friendly computational model at the local level.

DESIGN

Co-production workshops surveying the best-performing local authorities and a systematic literature review of strategies to increase uptake of screening programmes informed model use and development. We then co-produced the workHORSE (working Health Outcomes Research Simulation Environment) model to estimate the health, economic and equity impact of different NHS Health Check programme implementations, using illustrative-use cases.

SETTING

Local authorities in England.

PARTICIPANTS

Stakeholders from local authorities, Public Health England, the NHS, the British Heart Foundation, academia and other organisations participated in the workshops. For the local authorities survey, we invited 16 of the best-performing local authorities in England.

INTERVENTIONS

The user interface allows users to vary key parameters that represent programme activities (i.e. invitation, uptake, prescriptions and referrals). Scenarios can be compared with each other.

MAIN OUTCOME MEASURES

Disease cases and case-years prevented or postponed, incremental cost-effectiveness ratios, net monetary benefit and change in slope index of inequality.

RESULTS

The survey of best-performing local authorities revealed a diversity of effective approaches to maximise the coverage and uptake of NHS Health Check programme, with no distinct 'best buy'. The umbrella literature review identified a range of effective single interventions. However, these generally need to be combined to maximally improve uptake and health gains. A validated dynamic, stochastic microsimulation model, built on robust epidemiology, enabled service options analysis. Analyses of three contrasting illustrative cases estimated the health, economic and equity impact of optimising the Health Checks, and the added value of obtaining detailed local data. Optimising the programme in Liverpool can become cost-effective and equitable, but simply changing the invitation method will require other programme changes to improve its performance. Detailed data inputs can benefit local analysis.

LIMITATIONS

Although the approach is extremely flexible, it is complex and requires substantial amounts of data, alongside expertise to both maintain and run.

CONCLUSIONS

Our project showed that the workHORSE model could be used to estimate the health, economic and equity impact comprehensively at local authority level. It has the potential for further development as a commissioning tool and to stimulate broader discussions on the role of these tools in real-world decision-making.

FUTURE WORK

Future work should focus on improving user interactions with the model, modelling simulation standards, and adapting workHORSE for evaluation, design and implementation support.

STUDY REGISTRATION

This study is registered as PROSPERO CRD42019132087.

FUNDING

This project was funded by the National Institute for Health Research (NIHR) Health Technology Assessment programme and will be published in full in Health Technology Assessment; Vol. 25, No. 35. See the NIHR Journals Library website for further project information.

Patient Diversity in Breast Imaging: Barriers and Potential Solutions

Recent reports have highlighted disparities in breast cancer care related to patient diversity. Breast radiologists represent the face of breast imaging and are key players in advocating for patients to reduce these disparities. Diversity-related barriers for breast imaging patients, as they journey from screening to survivorship, include impediments to access and quality of care, gaps in communication, and lack of knowledge in both providers and patients. Potential strategies for overcoming these specific barriers include "culturally tailored" nurse navigators, mobile mammography, improved communication, patient and provider education, and breast radiologist involvement in advocacy efforts promoting diversity. As current trends in recommendations and guidelines for breast imaging include more numerous and advanced imaging modalities, it is important to acknowledge and address diversity-related disparities.

The Effectiveness of Educational Interventions on Breast Cancer Screening Uptake, Knowledge, and Beliefs among Women: A Systematic Review

There have been various systematic reviews on the significance of educational interventions as necessary components to encourage breast cancer screening (BCS) and reduce the burden of breast cancer (BC). However, only a few studies have attempted to examine these educational interventions comprehensively. This review paper aimed to systematically evaluate the effectiveness of various educational interventions in improving BCS uptake, knowledge, and beliefs among women in different parts of the world. Following the PRISMA guidelines, a comprehensive literature search on four electronic databases, specifically PubMed, Scopus, Web of Science, and ScienceDirect, was performed in May 2019. A total of 22 interventional studies were reviewed. Theory- and language-based multiple intervention strategies, which were mainly performed in community and healthcare settings, were the commonly shared characteristics of the educational interventions. Most of these studies on the effectiveness of interventions showed favorable outcomes in terms of the BCS uptake, knowledge, and beliefs among women. Educational interventions potentially increase BCS among women. The interpretation of the reported findings should be treated with caution due to the heterogeneity of the studies in terms of the characteristics of the participants, research designs, intervention strategies, and outcome measures.

Culturally Tailored Intervention to Promote Mammography Screening Practice Among Chinese American Women: a Systematic Review

Our review aimed to assess the effectiveness of culturally tailored intervention in mammography practice for Chinese American women. We searched the entire paper published by the Cochrane Library, PubMed, and Web of Science from inception to 17 October 2019. Moreover, we manually checked reference lists of included studies to find other potentially eligible studies. It included clinical trials published in English that evaluated the effects of culturally tailored intervention on mammography practice for Chinese American women. Finally, we involved eight studies in our review. After the intervention, the mammography intention and breast cancer-related knowledge were significantly improved. However, there was no significant impact on mammography completion rate, perceived susceptibility, perceived seriousness, perceived benefits, perceived barriers, and Eastern cultural views of Chinese American women. The culturally tailored interventions could serve as promising approaches to improve mammography screening practice for Chinese American women, but further improvements are needed.

Access to Care as a Barrier to Mammography for Black Women

Racial disparities in breast cancer screening, morbidity, and mortality persist for Black women. This study examines Black women's mammography beliefs and experiences with specific focus on barriers to mammography access in an urban city in the South East, United States. This retrospective, qualitative study used Penchansky and Thomas' conceptualization of health care access as the framework for the data analysis. In-depth, semistructured interviews were conducted with 39 Black women. Structural and personal factors continue to create barriers to mammography among Black women. Barriers to mammography were identified for each of the Penchansky and Thomas five dimensions of access to care: accessibility, affordability, availability, accommodation, and acceptability. Clinical practice strategies to increase mammography screening in Black women must be multifactorial, patient-centered, and culturally congruent. Policy development must address the structural barriers to mammography screening through expansion of health insurance coverage and increased accessibility to health care.

Genetic Testing and Surveillance of Young Breast Cancer Survivors and Blood Relatives: A Cluster Randomized Trial

Simple Summary

Identifying breast cancer patients with pathogenic mutations that run in their families may improve the follow-up care they receive and breast cancer screening of their close relatives. In this study we identified breast cancer patients with high chances of having a pathogenic mutation and their close female relatives. We developed and tested two different kinds of letters and booklets that presented either personalized or generic information about screening and breast cancer that runs in families, and we encouraged participants to seek genetic evaluation. We found that both types of letters worked equally well for breast cancer patients and for relatives, regardless of their racial background. The personalized letters had slightly better outcomes. Some breast cancer patients and their relatives used genetic services and improved their screening practices. Black patients and their relatives were more satisfied with the booklets than other participants.

Abstract

We compared a tailored and a targeted intervention designed to increase genetic testing, clinical breast exam (CBE), and mammography in young breast cancer survivors (YBCS) (diagnosed <45 years old) and their blood relatives. A two-arm cluster randomized trial recruited a random sample of YBCS from the Michigan cancer registry and up to two of their blood relatives. Participants were stratified according to race and randomly assigned as family units to the tailored (n = 637) or the targeted (n = 595) intervention. Approximately 40% of participants were Black. Based on intention-to-treat analyses, YBCS in the tailored arm reported higher self-efficacy for genetic services (p = 0.0205) at 8-months follow-up. Genetic testing increased approximately 5% for YBCS in the tailored and the targeted arm (p ≤ 0.001; p < 0.001) and for Black and White/Other YBCS (p < 0.001; p < 0.001). CBEs and mammograms increased significantly in both arms, 5% for YBCS and 10% for relatives and were similar for Blacks and White/Others. YBCS and relatives needing less support from providers reported significantly higher self-efficacy and intention for genetic testing and surveillance. Black participants reported significantly higher satisfaction and acceptability. Effects of these two low-resource interventions were comparable to previous studies. Materials are suitable for Black women at risk for hereditary breast/ovarian cancer (HBOC).

Health Beliefs and Breast Cancer Screening Practices Among African American Women in California

Background

African American women continue to have higher mortality rates of breast cancer when compared to other women, and evidence suggests that early detection of breast cancer can lead to favorable outcomes, yet there remains a paucity of literature about health beliefs and the utilization of three screening practices, namely breast self-examination, clinical breast examination and mammography in California, a state that currently has one of the highest breast cancer mortality rates among African American women.

Purpose

To investigate the relationship between health beliefs and three breast cancer detection practices, e.g. breast self-examination, clinical breast examination, and mammography in a cohort of African American women.

Methods

Using a descriptive correlational design, a convenience sample of two hundred and eighty-two (n = 282) self-identified women from six regional chapters of a national Black women’s political organization in California, completed a Demographic Data Questionnaire and Champion’s Health Belief Model Scale which assessed the hypothesized relationships of health beliefs and breast cancer detection practices.

Results

Among this culturally diverse group of women (49.8% American, 28.8% African, 21.4% West Indian), health motivation was positively related to the practice of BSE and annual physician visitation for clinical breast examinations. Health locus of control was positively related to the practice of BSE. Having relatives and friends who were diagnosed with breast cancer was strongly associated with having a mammogram and annual physician visitation for clinical breast examinations.

Conclusion

These findings may be used to target and develop interventions that are tailored to the unique characteristics of these diverse women.