A Health System Framework for Addressing Structural Racism: Mass General Brigham's United Against Racism Initiative.

The legacy of racism and structural inequality has taken a heavy toll on the health care system and the health outcomes of patients and members of community catchment areas. To achieve optimal health outcomes for all, health systems will need to enact structural change that is meaningful, measurable, and rooted in evidence. We describe an antiracism campaign organized into three pillars of focus (Leadership/Employees/Culture, Patient Care Equity, and Community Health and Policy Advocacy) and implemented across Mass General Brigham, a large integrated health system in the northeast of the United States. Our study ranges from the foundational to the aspirational and examples of data-driven areas of focus, programs (e.g., staff education, social risk mitigation, and new models of clinical service), and metrics developed for the health care workforce, patients, and surrounding communities are presented.

Disagreement between pharmacy claims and direct interview to identify patients with non-adherence to chronic cardiometabolic medications.

BACKGROUND: Accurate methods of identifying patients with suboptimal adherence to cardiometabolic medications are needed, and each approach has benefits and tradeoffs. METHODS: We used data from a large trial of patients with poorly controlled cardiometabolic disease and evidence of medication non-adherence measured using pharmacy claims data whose adherence was subsequently assessed during a telephone consultation with a clinical pharmacist. We then evaluated if the pharmacist assessment agreed with the non-adherence measured using claims. When pharmacist and claims assessments disagreed, we identified reasons why claims were insufficient and used multivariable modified Poisson regression to identify patient characteristics associated with disagreement. RESULTS: Of 1,069 patients identified as non-adherent using claims (proportion of days covered [PDC] <80%), 646 (60.4%) were confirmed as non-adherent on pharmacist interview. For the 423 patients (39.6%) where the interview disagreed with the claims, the most common reasons were paying cash or using an alternate insurance (36.6%), medication discontinuation or regimen change (32.8%), and recently becoming adherent (26.7%). Compared to patients whose claims and interview both showed non-adherence, patients whose interview disagreed with claims were less likely to miss outpatient office visits (RR:0.91, 95%CI:0.85-0.97) and more likely to have a baseline PDC above the median (RR:1.35, 95%CI:1.10-1.64). CONCLUSIONS: Among patients identified as non-adherent by claims, 39.6% were observed to be adherent when assessed during pharmacist consultation. This discrepancy was largely driven by paying out-of-pocket, using alternative insurance, or medication discontinuation or change. These findings have important implications for using pharmacy claims to identify and intervene upon medication non-adherence.

Patient characteristics associated with the successful transition to virtual care: Lessons learned from the first million patients.

INTRODUCTION: The increased use of telehealth to maintain ambulatory care during the COVID-19 pandemic had potential to exacerbate or diminish disparities in access to care. OBJECTIVE: The purpose of this study was to describe patient characteristics associated with successful transition from in-person to virtual care, and video vs audio-only participation. METHODS: This was a retrospective analysis of electronic health record data from all patients with ambulatory visits from 1 October 2019-30 September 2020 in a large integrated health system in the Northeast USA. The outcome of interest was receipt of virtual care, and video vs audio-only participation. We matched home addresses with census-tract level area social vulnerability index (SVI) and Internet access. Among ambulatory care patients, we used logistic regression to identify characteristics associated with virtual participation. Among virtual participants, we identified characteristics associated with video vs audio-only visits. RESULTS: Among 1,241,313 patients, 528,542 (42.6%) were virtual participants. Relative to in-person only, virtual participants were older, more often English-proficient and with activated patient portal. Characteristics associated with virtual participation included patients with: only behavioural health visits, COVID patients, highest quartile of visit frequency, and multiple visit types. Characteristics associated with video participation (relative to audio-only) included being younger and patients with: only behavioural health visits, highest quartile of visit frequency, non-Hispanic black race, limited English proficiency and inactivated portal account. DISCUSSION: In our regional healthcare system, the transition to virtual care during COVID was vital for continued access to care, but substantial inequity remained. Without audio-only visits, access to care would have been even more limited for our most vulnerable patients.

Trends in buprenorphine treatment disparities during the COVID pandemic in Massachusetts.

Background: Racial, sex, and age disparities in buprenorphine treatment have previously been demonstrated. We evaluated trends in buprenorphine treatment disparities before and after the onset of the COVID pandemic in Massachusetts. Methods: This cross-sectional study used data from an integrated health system comparing 12-months before and after the March 2020 Massachusetts COVID state of emergency declaration, excluding March as a washout period. Among patients with a clinical encounter during the study periods with a diagnosis of opioid use disorder or opioid poisoning, we extracted outpatient buprenorphine prescription rates by age, sex, race and ethnicity, and language. Generating univariable and multivariable Poisson regression models, we calculated the probability of receiving buprenorphine. Results: Among 4,530 patients seen in the period before the COVID emergency declaration, 57.9% received buprenorphine. Among 3,653 patients seen in the second time period, 55.1% received buprenorphine. Younger patients (<24) had a lower likelihood of receiving buprenorphine in both time periods (adjusted prevalence ratio (aPR), 0.56; 95% CI, 0.42-0.75 before vs. aPR, 0.76; 95% CI, 0.60-0.96 after). Male patients had a greater likelihood of receiving buprenorphine compared to female patients in both time periods (aPR: 1.05; 95% CI, 1.00-1.11 vs. aPR: 1.09; 95% CI, 1.02-1.16). Racial disparities emerged in the time period following the COVID pandemic, with non-Hispanic Black patients having a lower likelihood of receiving buprenorphine compared to non-Hispanic white patients in the second time period (aPR, 0.85; 95% CI, 0.72-0.99). Conclusions: Following the onset of the COVID pandemic in Massachusetts, ongoing racial, age, and gender disparities were evident in buprenorphine treatment with younger, Black, and female patients less likely to be treated with buprenorphine across an integrated health system.

The Unmet Need for Orthopaedic Services Among American Indian and Alaska Native Communities in the United States.

ABSTRACT: Historic and present-day marginalization has resulted in a high burden of disease and worse health outcomes for American Indian and Alaska Native (AI/AN) communities in the United States. Musculoskeletal disease is the leading cause of disability for the general population in the U.S. today. However, few have examined musculoskeletal disease burden and access to orthopaedic surgical care in the AI/AN communities. A high prevalence of hip dysplasia, arthritis, back pain, and diabetes, and a high incidence of trauma and road traffic-related mortality, suggest a disproportionately high burden of musculoskeletal pathology among the AI/AN communities and a substantial need for orthopaedic surgical services. Unfortunately, AI/AN patients face many barriers to receiving specialty care, including long travel distances and limited transportation to health facilities, inadequate staff and resources at Indian Health Service (IHS)-funded facilities, insufficient funding for referral to specialists outside of the IHS network, and sociocultural barriers that complicate health-system navigation and erode trust between patients and providers. For those who manage to access orthopaedic surgery, AI/AN patients face worse outcomes and more complications than White patients. There is an urgent need for orthopaedic surgeons to participate in improving the availability of quality orthopaedic services for AI/AN patients through training and support of local providers, volunteerism, advocating for a greater investment in the IHS Purchased/Referred Care program, expanding telemedicine capabilities, and supporting community-based participatory research activities.

The Kidney Failure Risk Equation Score and CKD Care Delivery Measures: A Cross-sectional Study.

RATIONALE & OBJECTIVE: The 4-variable kidney failure risk equation (KFRE) allows for the prediction of chronic kidney disease (CKD) progression using age, sex, estimated glomerular filtration rate, and urine albumin/creatinine ratio. Electronic health records enable KFRE auto-calculation, and registries allow population-level application. We assessed whether 2-year KFRE score categories are associated with CKD care metrics. STUDY DESIGN: Cross-sectional cohort. SETTING & PARTICIPANTS: This study included individuals with CKD in March 2020 who were receiving care within the Partners HealthCare system in Massachusetts. OUTCOMES: The presence of sufficient data to calculate the KFRE and, among those with a KFRE score, performance on CKD clinical care metrics, including (1) prescription of angiotensin-converting enzyme inhibitor or angiotensin receptor blocker; (2) blood pressure at goal (<140/90 mm Hg) based on clinic measurements; (3) composite metric of hepatitis B virus immunity; (4) composite metric of referral, evaluation, or waitlist status for kidney transplantation; (5) advance directive documentation; (6) yearly influenza vaccination; and (7) pneumonia vaccination. ANALYTICAL APPROACH: Multivariable logistic regression analysis was used to analyze the association of KFRE score category with CKD care metrics. RESULTS: Of 61,546 patients, 18,272 (30%) had auto-calculated 2-year KFRE scores; the remaining patients lacked KFRE scores because of absent albuminuria assessment. Individuals with a KFRE score were more likely to have a primary care provider or nephrologist. Among patients with 2-year KFRE scores, high-risk patients had increased odds of completing advance directives (OR, 1.52; 95% CI, 1.07-2.17), while low-risk patients had decreased odds of influenza vaccination (OR, 0.85; 95% CI, 0.75-0.97). Patients with moderate- and high-risk KFRE scores had lower odds of having blood pressure at goal (OR, 0.77; 95% CI, 0.61-0.96 and OR, 0.63; 95% CI, 0.44-0.88, respectively). LIMITATIONS: Albuminuria data may have been assessed outside of the Partners system. CONCLUSIONS: A higher-risk KFRE score is associated with the delivery of some but not all CKD care measures. An opportunity exists to improve albuminuria measurement.

The Indian Health Service and American Indian/Alaska Native Health Outcomes.

The Indian Health Service (IHS) has made huge strides in narrowing health disparities between American Indian and Alaska Native (AI/AN) populations and other racial and ethnic groups. Yet, health disparities experienced by AI/AN people persist, with deep historical roots combined with present-day challenges. Here we review the history of the IHS from colonization to the present-day system, highlight persistent disparities in AI/AN health and health care, and discuss six key present-day challenges: inadequate funding, limited human resources, challenges associated with transitioning services from federal to Tribal control through contracting and compacting, evolving federal and state programs, the need for culturally sensitive services, and the promise and challenges of health technology.

A Quality Improvement Intervention Leveraging a Safety Net Model for Surveillance Colonoscopy Completion.

Systems to address follow-up testing of clinically positive surveillance colonoscopy results are lacking. The impact of an ambulatory safety net (ASN) intervention on rates of colonoscopy completion was assessed. The ASN team identified patients using an electronic registry, conducted patient outreach, coordinated care, and tracked colonoscopy completion. In all, 701 patients were captured in the ASN program: 58.1% (407/701) had possible barriers to follow-up colonoscopy completion, with rates of 80.1% (236/294) if no barrier, and 40.9% (287/701) overall. Colonoscopy completion likelihood increased with prior polypectomy (odds ratio [OR], 1.6; 95% confidence interval [CI], 1.1-2.3), and decreased with White race (OR, 0.5; 95% CI, 0.3-0.9), increased inpatient visits (OR, 0.6; 95% CI, 0.4-0.9), more outreach attempts (OR, 0.6; 95% CI, 0.5-0.7), and fair/poor/inadequate preparation (OR, 0.4; 95% CI, 0.2-0.7) in logistic regression models. An ASN model for quality improvement promotes colonoscopy completion rates and identifies patient barriers.

Improving Allergy Documentation: A Retrospective Electronic Health Record System-Wide Patient Safety Initiative.

OBJECTIVES: Documentation of allergies in a coded, non-free-text format in the electronic health record (EHR) triggers clinical decision support to prevent adverse events. Health system-wide patient safety initiatives to improve EHR allergy documentation by specifically decreasing free-text allergy entries have not been reported. The goal of this initiative was to systematically reduce free-text allergen entries in the EHR allergy module. METHODS: We assessed free-text allergy entries in a commercial EHR used at a multihospital integrated health care system in the greater Boston area. Using both manual and automated methods, a multidisciplinary consensus group prioritized high-risk and frequently used free-text allergens for conversion to coded entries, added new allergen entries, and deleted duplicate allergen entries. Environmental allergies were moved to the patient problem list. RESULTS: We identified 242,330 free-text entries, which included a variety of environmental allergies (42%), food allergies (18%), contrast media allergies (13%), "no known allergy" (12%), drug allergies (2%), and "no contrast allergy" (2%). Most free-text entries were entered by medical assistants in ambulatory settings (34%) and registered nurses in perioperative settings (20%). We remediated a total of 52,206 free-text entries with automated methods and 79,578 free-text entries with manual methods. CONCLUSIONS: Through this multidisciplinary intervention, we identified and remediated 131,784 free-text entries in our EHR to improve clinical decision support and patient safety. Additional strategies are required to completely eliminate free-text allergy entry, and establish systematic, consistent, and safe guidelines for documenting allergies.

Primary care physician's (PCP) perceived value of patient-reported outcomes (PROs) in clinical practice: a mixed methods study.

BACKGROUND: Patient-reported outcomes (PROs) can promote patient engagement, shared-decision making and improve the overall experience of care. However, PRO integration in the primary care clinical setting is limited. Exploring the perspectives of primary care physicians (PCPs) on PROs is key to understanding how they are being used in the clinical setting. We sought to elucidate this clinical perspective at one of the largest US health systems that has integrated a wide range of PROs into routine primary care. METHODS: Mixed methods study with both anonymous online surveys and in-person qualitative semistructured interviews conducted with PCPs to understand their clinical perspectives on the applications of the existing PROs. PCPs from the 19 affiliated clinics were prompted to complete the survey. Interviewed PCPs were selected via a combination of random and purposive selection from the PCP directory. RESULTS: Of 172 PCPs, 117 (68%) completed the online survey and 28 completed semistructured interviews. Most PCPs (77%) reviewed PRO responses with their patients. PCPs endorsed that PROs improve clinic efficiency and clinical management. However, PCPs have heterogeneous perspectives on the relevance of PROs in clinical practice, likely due to variations in clinic practice. For specific PRO instruments, PCPs reported anxiety and depression screening PROs to be most helpful. PCPs felt that PROs assisted with completing screening questions that are required by regulatory bodies. Barriers to using PROs include poor user-interface for both clinicians and patients and inadequate training. CONCLUSIONS: Most PCPs regularly use PRO data though there are mixed opinions about their clinical relevance. An adaptable, user-friendly PRO system has the potential to have meaningful clinical applications in primary care.

Association Between Cost-Saving Prescription Policy Changes and Adherence to Chronic Disease Medications: an Observational Study.

BACKGROUND: Pharmacy benefit design is one tool for improving access and adherence to medications for the management of chronic disease. OBJECTIVE: We assessed the effects of pharmacy benefit design programs, including a change in pharmacy benefit manager (PBM), institution of a prescription out-of-pocket maximum, and a mandated switch to 90 days' medication supply, on adherence to chronic disease medications over time. DESIGN: We used a difference-in-differences design to assess changes in adherence to chronic disease medications after the transition to new prescription policies. SUBJECTS: We utilized claims data from adults aged 18-64, on ≥ 1 medication for chronic disease, whose insurer instituted the prescription policies (intervention group) and a propensity score-matched comparison group from the same region. MAIN MEASURES: The outcome of interest was adherence to chronic disease medications measured by proportion of days covered (PDC) using pharmacy claims. KEY RESULTS: There were 13,798 individuals in each group after propensity score matching. Compared to the matched control group, adherence in the intervention group decreased in the first quarter of 2015 and then increased back to pre-intervention trends. Specifically, the change in adherence compared to the last quarter of 2014 in the intervention group versus controls was - 3.6 percentage points (pp) in 2015 Q1 (p < 0.001), 0.65 pp in Q2 (p = 0.024), 1.1 pp in Q3 (p < 0.001), and 1.4 pp in Q4 (p < 0.001). CONCLUSIONS: In this cohort of commercially insured adults on medications for chronic disease, a change in PBM accompanied by a prescription out-of-pocket maximum and change to 90 days' supply was associated with short-term disruptions in adherence followed by return to pre-intervention trends. A small improvement in adherence over the year of follow-up may not be clinically significant. These findings have important implications for employers, insurers, or health systems wishing to utilize pharmacy benefit design to improve management of chronic disease.

Comparison of measures of medication adherence from pharmacy dispensing and insurer claims data.

OBJECTIVE: Medication nonadherence is linked to worsened clinical outcomes and increased costs. Existing system-level adherence interventions rely on insurer claims for patient identification and outcome measurement, yet suffer from incomplete capture and lags in data acquisition. Data from pharmacies regarding prescription filling, captured in retail dispensing, may be more efficient. DATA SOURCES: Pharmacy fill and insurer claims data. STUDY DESIGN: We compared adherence measured using pharmacy fill data to adherence using insurer claims data, expressed as proportion of days covered (PDC) over 12 months. Agreement was evaluated using correlation/validation metrics. We also explored the relationship between adherence in both sources and disease control using prediction modeling. DATA EXTRACTION METHODS: Large pragmatic trial of cardiometabolic disease in an integrated delivery network. PRINCIPAL FINDINGS: Among 1113 patients, adherence was higher in pharmacy fill (mean = 50.0%) versus claims data (mean = 47.4%), although they had moderately high correlation (R = 0.57, 95% CI: 0.53-0.61) with most patients (86.9%) being similarly classified as adherent or nonadherent. Sensitivity and specificity of pharmacy fill versus claims data were high (0.89, 95% CI: 0.86-0.91 and 0.80, 95% CI: 0.75-0.85). Pharmacy fill-based PDC predicted better disease control slightly more than claims-based PDC, although the difference was nonsignificant. CONCLUSIONS: Pharmacy fill data may be an alternative to insurer claims for adherence measurement.

Increasing Equity While Improving the Quality of Care: JACC Focus Seminar 9/9.

This review summarizes racial and ethnic disparities in the quality of cardiovascular care-a challenge given the fragmented nature of the health care delivery system and measurement. Health equity for all racial and ethnic groups will not be achieved without a substantially different approach to quality measurement and improvement. The authors adapt a tool frequently used in quality improvement work-the driver diagram-to chart likely areas for diagnosing root causes of disparities and developing and testing interventions. This approach prioritizes equity in quality improvement. The authors demonstrate how this approach can be used to create interventions that reduce systemic racism within the institutions and professions that deliver health care; attends more aggressively to social factors related to race and ethnicity that affect health outcomes; and examines how hospitals, health systems, and insurers can generate effective partnerships with the communities they serve to achieve equitable cardiovascular outcomes.

Assessing the quality of shared decision making for elective orthopedic surgery across a large healthcare system: cross-sectional survey study.

BACKGROUND: Clinical guidelines recommend engaging patients in shared decision making for common orthopedic procedures; however, limited work has assessed what is occurring in practice. This study assessed the quality of shared decision making for elective hip and knee replacement and spine surgery at four network-affiliated hospitals. METHODS: A cross-sectional sample of 875 adult patients undergoing total hip or knee joint replacement (TJR) for osteoarthritis or spine surgery for lumbar herniated disc or lumbar spinal stenosis was selected. Patients were mailed a survey including measures of Shared Decision Making (SDMP scale) and Informed, Patient-Centered (IPC) decisions. We examined decision-making across sites, surgeons, and conditions, and whether the decision-making measures were associated with better health outcomes. Analyses were adjusted for clustering of patients within surgeons. RESULTS: Six hundred forty-six surveys (74% response rate) were returned with sufficient responses for analysis. Patients who had TJR reported lower SDMP scores than patients who had spine surgery (2.2 vs. 2.8; p < 0.001). Patients who had TJR were more likely to make IPC decisions (OA = 70%, Spine = 41%; p < 0.001). SDMP and IPC scores varied widely across surgeons, but the site was not predictive of SDMP scores or IPC decisions (all p > 0.09). Higher SDMP scores and IPC decisions were associated with larger improvements in global health outcomes for patients who had TJR, but not patients who had spine surgery. CONCLUSIONS: Measures of shared decision making and decision quality varied among patients undergoing common elective orthopedic procedures. Routine measurement of shared decision making provides insight into areas of strength across these different orthopedic conditions as well as areas in need of improvement.

Racial and ethnic disparities in emergency department restraint use: A multicenter retrospective analysis.

BACKGROUND: Research regarding disparities in physical restraint use in the emergency department (ED) is limited. We evaluated the role of race, ethnicity, and preferred language on the application of physical restraint among ED patients held under a Massachusetts section 12(a) order for mandatory psychiatric evaluation. METHODS: We identified all ED patient encounters with a section 12(a) order across a large integrated 11-hospital health system from January 2018 through December 2019. Information on age, race, ethnicity, preferred language, insurance, mental illness, substance use, history of homelessness, and in-network primary care provider was obtained from the electronic health record. We evaluated for differences in physical restraint use between subgroups via a mixed-effect logistic regression with random-intercept model. RESULTS: We identified 32,054 encounters involving a section 12(a) order. Physical restraints were used in 2,458 (7.7%) encounters. Factors associated with physical restraint included male sex (adjusted odds ratio [aOR] = 1.44, 95% confidence interval [CI] = 1.28 to 1.63), Black/African American race (aOR = 1.22, 95% CI = 1.01 to 1.48), Hispanic ethnicity (aOR = 1.45, 95% CI = 1.22 to 1.73), Medicaid insurance (aOR = 1.21, 95% CI = 1.05 to 1.39), and a diagnosis of bipolar disorder or psychotic disorder (aOR = 1.51, 95% CI = 1.31 to 1.74). Across all age groups, patients who were 25 to 34 years of age were at highest risk of restraint (aOR = 2.01, 95% CI = 1.69 to 2.39). Patients with a primary care provider within our network (aOR = 0.81, 95% CI = 0.72 to 0.92) were at lower risk of restraint. No associations were found between restraint use and language, history of alcohol or substance use, or homelessness. CONCLUSION: Black/African American and Hispanic patients under an involuntary mandatory emergency psychiatric evaluation hold order experience higher rates of physical restraint in the ED. Factors contributing to racial disparities in the use of physical restraint, including the potential role of structural racism and other forms of bias, merits further investigation.

Contributors to Gender Differences in Burnout and Professional Fulfillment: A Survey of Physician Faculty.

BACKGROUND: This study was conducted to describe gender differences in physician burnout and professional fulfillment and to explore their potential contributors. METHODS: This was a single-center, cross-sectional survey study of physician faculty at Brigham and Women's Hospital, an academic medical center in Boston. The population included all physician faculty who practiced clinical medicine in 2017 (n = 2,388). The study was conducted using the Stanford Physician Wellness Survey. Burnout and professional fulfillment were the main outcome measures assessed. Other variables assessed included ratings of culture of wellness, personal resilience, and efficiency of practice factors associated with physician experience. RESULTS: The study population consisted of 1,066 faculty, of whom 46.4% were female and 59.8% were younger than 50. Female physicians reported significantly higher rates of burnout (42.4% vs. 34.4%, p = 0.01) and lower rates of professional fulfillment (35.1% vs. 50.4%, p < 0.01) than male physicians. Female physicians reported lower ratings for self-compassion and multiple culture of wellness factors. After adjusting for demographic factors and academic rank, the study team identified multiple culture of wellness factors (perceived appreciation, schedule control, work environment diversity and inclusion) and self-compassion as attenuating the significant relationship between gender and burnout. Only perceived appreciation attenuated the significant relationship between gender and professional fulfillment. CONCLUSION: This study demonstrated higher rates of burnout and lower rates of professional fulfillment among female vs. male physician faculty. Culture of wellness factors and self-compassion may contribute to gender differences in burnout and professional fulfillment and potentially represent modifiable targets for efforts seeking to eliminate gender disparities in physicians' workplace experiences.

Digital disparities: lessons learned from a patient reported outcomes program during the COVID-19 pandemic.

The collection of patient reported outcomes (PROs) allows us to incorporate the patient's voice into their care in a quantifiable, validated manner. Large-scale collection of PROs is facilitated by the electronic health record and its portal, though, historically, patients have eschewed the portal and completed patient-reported outcome measures in the clinic via tablet. Furthermore, access and use of the portal is associated with known racial inequities. Our institution oversees the largest clinical PRO program in the world, and has a long history of racially equitable PRO completion rates via tablet. However, when the COVID-19 pandemic forced us to remove tablets from clinics and rely exclusively on portal use for PRO completion, profound racial disparities resulted immediately. Our experience quantifiably demonstrates the magnitude of inequity that the portal, in its current configuration, generates and serves as a cautionary tale to other health care systems and electronic health records.

Downstream Cascades of Care Following High-Sensitivity Troponin Test Implementation.

BACKGROUND: Patients with chest pain are often evaluated for acute myocardial infarction through troponin testing, which may prompt downstream services (cascades) of uncertain value. OBJECTIVES: This study sought to determine the association of high-sensitivity cardiac troponin (hs-cTn) assay implementation with cascade events. METHODS: Using electronic health record and billing data, this study examined patient-visits to 5 emergency departments from April 1, 2017, to April 1, 2019. Difference-in-differences analysis compared patient-visits for chest pain (n = 7,564) to patient-visits for other symptoms (n = 100,415) (irrespective of troponin testing) before and after hs-cTn assay implementation. Outcomes included presence of any cascade event potentially associated with an initial hs-cTn test (primary), individual cascade events, length of stay, and spending on cardiac services. RESULTS: Following hs-cTn implementation, patients with chest pain had a 2.8% (95% confidence interval [CI]: 0.72% to 4.9%) net increase in experiencing any cascade event. They were more likely to have multiple troponin tests (10.5%; 95% CI: 9.0% to 12.0%) and electrocardiograms (7.1 per 100 patient-visits; 95% CI: 1.8 to 12.4). However, they received net fewer computed tomography scans (-1.5 per 100 patient-visits; 95% CI: -1.8 to -1.1), stress tests (-5.9 per 100 patient-visits; 95% CI: -6.5 to -5.3), and percutaneous coronary intervention (PCI) (-0.65 per 100 patient-visits; 95% CI: -1.01 to -0.30) and were less likely to receive cardiac medications, undergo cardiology evaluation (-3.5%; 95% CI: -4.5% to 2.6%), or be hospitalized (-5.8%; 95% CI: -7.7% to -3.8%). Patients with chest pain had lower net mean length of stay (-0.24 days; 95% CI: -0.32 to -0.16) but no net change in spending. CONCLUSIONS: Hs-cTn assay implementation was associated with more net upfront tests yet fewer net stress tests, PCI, cardiology evaluations, and hospital admissions in patients with chest pain relative to patients with other symptoms.