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Breast Cancer Surveillance Consortium: Progress in Understanding Screening Delivery and Early Detection Rachel Ballard-Barbash, MD, MPH, Associate Director, NCI/DCCPS/ARP National Cancer Institute
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Establishing the Breast Cancer Surveillance Consortium Origins and Purpose of the BCSC and SCC Complexities of creating the Consortium Resource for research Research Evidence Key factors for success Challenges and opportunities remain
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Establishing the BCSC and SCC In the beginning, much was unknown No community measures of mammography quality and no source of national data Limited experience collecting data in the course of care – required protection for providers as research subjects Many challenges to establishing the BCSC Shifted from independent RO1 to coordinated pooled data, mapping to CDE, new statistical methods for complex data Moved from paper to electronic data capture in early years Field of delivery research in practice was new and many of the Principal Investigators were new researchers
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Scenes from the Beginning A Daunting Task Editor Extraordinaire IBSN meeting Safety First
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Breast Cancer Legislation and Funding The BCSC began as mammography screening was increasing 1990, CDC’s National Breast and Cervical Early Detection Program 1991, Department of Defense Breast Cancer Research Program 1991, NIH launches Women's Health Initiative Mammography Quality Standards Act of 1992 (MQSA) mandated NCI to develop a breast cancer screening surveillance system NCI Response Pilot studies in SEER registries supported development of 1993 RFA Expanded with 1994 RFA (new sites and Statistical Coordinating Center) to address racial/ethnic, geographic, and health system diversity in screening BCSC renewed in 2000 and 2005
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BCSC Purpose Evaluate performance of mammography screening in practice Individual, health professional and system level factors Increase capacity to examine provider and system factors Define biologic characteristics of cancers that influence detection Quantify population effect of screening Longer term survival and mortality Track new technologies in screening Imaging, tissue, molecular markers, proteomics
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BCSC Structure Cancer Multiple Research Uses Radiology Facilities Geographic Site Pathology Facilities Cancer Registry
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BCSC Sites
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BCSC Local Facilities (N=164)
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Demographics of Women 7,335,521 mammograms from 1994- 2008 AgeBCSC - N (%)US population 2008 – N (%) 35-39314,294 (4.3%)11,387,968 (16%) 40-492,164,444 (29.%)21,515,659 (30%) 50-592,208,148 (30.1%)15,938,332 (22%) 60-691,465,980 (20%)10,802,003 (15%) 70-79961,472 (13%)9,134,000 (13%) 80-84221,183 (3%)3,110,470 (4%) Race/Ethnicity BCSC - N (%)US population 2008 – N (%) White, non-Hispanic5,218,642 (71%)57,167,145 (71%) African American, non-Hispanic424,840 (5.8%)9,460,539 (11.8%) Asian, non-Hispanic453,569 (6.2%)3,637,776 (4.5%) Hispanic636,119 (8.7%)8,716,664 (10.4%) Native Hawaiian or Pacific Islander3,073 (< 1%)114,817 (< 1%) American Indian or Alaska Native92,044 (1.3%)653,440 (1%) Mixed (Two or more)54,974 (0.7%) 766,436 (1%) Other31,872 (0.4%)n/a Unknown420,388 (5.7%)n/a
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Cumulative Number of Mammograms by Submission Year
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Cumulative Number of Cancer Cases by Submission Year
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Core Pooled BCSC Data: Women & Physician Level Variables & Outcomes Self-administered questionnaire Direct data entry or questionnaire Annual linkage WomenRadiologists Tumor registry & Pathology lab
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BCSC as a Research Resource Since 1994, BCSC collected data on a cohort of over 2 million women 8,374,024 million mammograms (2,323,252 unique women) 86,700 breast cancers (65,313 invasive and 13,263 In Situ) Screening data linked to Medicare data 107 radiology facilities and 1300 radiologists Collective insight of BCSC PIs about breast cancer risk factors, screening, and related outcomes Data complexity Statistical methods Research utilizing the core BCSC data focuses on delivery, performance and quality of care
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Uses of Pooled BCSC Research Resources Research and modeling Data source for simulation models (CISNET) Investigators have collaboratively published 374 papers Engaged new and junior investigators 36 publications by junior investigators (2005-8) – most non-BCSC Three career development awards Enabled new grants Supported the generation of more than 65 research grants from many agencies – many investigators from outside the BCSC New data linkages – BCSC-Medicare linked data
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Selected Ancillary Studies Assessing and Improving Mammography (AIM) Assesses accuracy of interpretation of mammograms Develops tools and guidance for training of radiologists Co-funded by ACS (Longaberger funds) and NCI (Breast Cancer Stamp ) Factors Affecting Variability Of Radiologists (FAVOR) R01 utilizing BCSC data to study the variability in radiologists in community mammography settings (PI Joann Elmore) Comparative Effectiveness Research Comparative Effectiveness of Breast Imaging Strategies in Community Practice – GO Grant (ARRA funds, PI Diana Miglioretti) Collaboration to evaluate digital vs. film-screen mammography – BCSC- CISNET-EPC (ARRA funds, PI Diana Miglioretti)
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Use of BCSC Research Evidence Delivery research generates questions for discovery and development research Within the BCSC, special research projects at individual sites used for discovery and development questions Address targeted translation issues Eg: Develop quantitative, automated method for measurement of breast density Individuals sought as members of panels related to breast cancer on a diversity of topics (IOM, ACR) Contributed evidence to federal reports and policy IOM, GAO, WHO
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Factors for Success Team Science approach, utilized variety of disciplines within each site A secure, centralized resource, shared by many Incorporation of collecting patient data for research purposes into clinical care practice Anticipate and understand the complexities of building a longitudinal dataset Creating new ways to provide feedback on performance
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Challenges Remain… Delivery, performance and quality of care is dynamic – need ongoing data reflecting current clinical practice Requires prospective, longitudinal data Evaluate longer term outcomes beyond process measures Large, multiregional data to answer questions in specific groups Growth in investigator-initiated research utilizing the BCSC research resource indicates an enormous potential for addressing questions in delivery beyond the current scope Comparative effectiveness of digital and screen-film Innovative template for the future
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