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To be or not to be compliant? Hospitals' initial strategic responses to the federal price transparency rule. Health Serv Res 2023. [PMID: 37930618 DOI: 10.1111/1475-6773.14252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023] Open
Abstract
OBJECTIVE To understand US hospitals' initial strategic responses to the federal price transparency rule that took effect January 2021. DATA SOURCES AND STUDY SETTING Primary interview data collected from 12 not-for-profit hospital organizations in six US metropolitan markets. All but one organization were multihospital systems; the 12 organizations represent a total of 81 hospitals. STUDY DESIGN Exploratory, cross-sectional, qualitative interview study of a convenience sample of hospital organizations across six geographically and compliance diverse markets. DATA COLLECTION/EXTRACTION METHODS In-depth, semi-structured, qualitative interviews with 16 key informants across sampled organizations between November 2021 and March 2022. Interviews solicited data about internal organizational factors and external market factors affecting strategic responses. Transcribed interviews were de-identified, coded, and analyzed using the constant comparative method. PRINCIPAL FINDINGS Hospitals' strategic responses were influenced internally by the degree of the regulation's alignment with organizational values and goals, and task complexity vis-a-vis available resources. We found extensive variation in organizational capabilities to comply, and all but one organization relied on consultants and vendors to some degree. Key external factors driving strategic responses were hospitals' variable perceptions about how available price information would affect their competitive position, bottom line, and reputation. Organizations with more confidence in their interpretation of the environment, including how peers or purchasers would behave, and greater clarity in their own organization's position and goals, had more definitive initial strategic responses. In the first year, organizations' strategic responses skewed toward compliance, especially for the rule's consumer shopping requirements. CONCLUSIONS A deeper understanding of the realities of operationalizing price transparency policy for hospitals is needed to improve its impact.
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The Extent Hospital Organizational Factors Influence Inpatient Care Delivery: A Case Study Looking at Knee and Hip Replacement Surgery. Health Serv Insights 2022; 15:11786329221109303. [PMID: 35813564 PMCID: PMC9260580 DOI: 10.1177/11786329221109303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 05/24/2022] [Indexed: 11/25/2022] Open
Abstract
There is a body of Implementation and Dissemination research describing the
importance of “context”—the characteristics describing the setting where a
process or innovation occurs—when evaluating delivery, outcomes and cost of
health services. These contextual factors, which can occur at the system,
organization, or provider level, may either facilitate or erect barriers to the
utilization of evidence-based practices and the outcomes achieved. This paper
examines the influence of organizational structure and operating environment
characteristics of where inpatient health care is delivered, controlling for
patient and provider characteristics, on health services delivery and outcomes
achieved. We used inpatient cost-of-care to represent the bundle of services
provided to patients receiving primary knee and hip replacement procedures. Data
includes patient level data from discharge records for 62 140 knee replacements
and 42 392 hip replacements from the 2015 AHRQ Healthcare Cost and Utilization
Project State Inpatient Discharge database and hospital characteristics from the
2015 American Hospital Association survey. Multi-level linear estimation models
controlling for patient and payer characteristics were employed to assess the
impact of specific organizational and operating environment factors. We found
that although patient and payer characteristics significantly impacted the
inpatient cost of care, there is significant variation between hospitals and
among physicians within a hospital beyond what can be explained by patient,
payer and local price effect characteristics. Organizational and physician
characteristics that had the most significant impact on cost of care included
the volume of services provided, urban location, and for-profit ownership. These
factors can inform future policy and program design and evaluation.
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[Contribution of central motion conduction time to the assessment of corticospinal tract lesions and its clinical significance]. ZHONGHUA YI XUE ZA ZHI 2022; 102:1918-1923. [PMID: 35768391 DOI: 10.3760/cma.j.cn112137-20220405-00702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the association of central motion conduction time (CMCT) with corticospinal tract lesions and its clinical application. Methods: Patients who completed transcranial magnetic stimulation-motor evoked potentials were included from Department of Neurology, Xuanwu Hospital between June 2020 and June 2021. The differences of CMCT values between corticospinal tract sign-positive group and tendon reflex-positive group and the relevant negative groups were compared. The consistency between increased CMCT values and the positive signs of corticospinal tract damage, as well as the significance of CMCT in different neurological diseases were further evaluated. Results: A total of 271 patients were included in the study, aged 12-86 (49±16) years, with 137 males (50.55%) and 134 females (49.45%). The CMCT values[M(Q1,Q3)]from Hoffmann's sign-positive group [9.52 (8.54, 10.99) ms vs 9.03 (8.30, 9.53) ms], Babinski's sign-positive group [19.54 (16.97, 24.43) ms vs 16.85(15.63, 18.55) ms] and tendon reflex-positive group [15.38 (9.27, 19.28) ms vs 10.49(8.79, 16.60) ms] were larger than those of relevant negative groups (all P<0.01). In the Babinski sign-positive group, 78.01%(181/232) of the patients had increased CMCT, while in the Hoffmann's sign-positive group, only 26.03%(19/73) of the patients had increased CMCT, indicating that the contribution of CMCT from the lower extremities to the assessment of corticospinal tract lesions was better than that of the upper extremities. With the increase of CMCT values in lower limbs, Babinski sign positive rate increased, the difference was statistically significant(P<0.001). In nervous system diseases, the consistency between CMCT and pathological signs was 75.65% (205/271). Conclusions: The contribution of CMCT from the lower extremities to the assessment of corticospinal tract lesions is superior to that of upper limbs. The higher increase of CMCT values are more reliable for corticospinal tract damage. CMCT has a good concordance with corticospinal tract lesions in some neurological diseases, which can be used to assist clinical diagnosis.
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Association of Care Coordination Experience and Health Services Use with Main Provider Type for Children with Inflammatory Bowel Disease. J Pediatr 2021; 234:142-148.e1. [PMID: 33798510 PMCID: PMC8238824 DOI: 10.1016/j.jpeds.2021.03.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/29/2021] [Accepted: 03/10/2021] [Indexed: 10/21/2022]
Abstract
OBJECTIVES To describe care coordination experience for families of children with inflammatory bowel disease (IBD) and compare use of health services between families who identified a primary care physician (PCP) vs a gastroenterologist as a child's main provider. STUDY DESIGN This is a cross-sectional survey of care coordination experiences and health services use for children 6-19 years old receiving care in the IBD program at a children's hospital during 2018. English-speaking parents completed the Family Experiences with Coordination of Care Survey about their child's main provider and reported past-year health services. Bivariate testing and multivariate logistic regression explored differences in care coordination experience and health services by main provider, adjusted for demographic and clinical variables. RESULTS A total of 113 of 270 (42%) invited patients participated. Among 101 patients with complete data, 41% identified a PCP main provider. Performance on 5 of 16 Family Experiences with Coordination of Care indicators was higher for patients reporting a gastroenterologist vs a PCP main provider. However, having a PCP vs gastroenterologist main provider was associated with greater use of any past-year primary care services (adjusted proportion 94% vs 75%; P = .01) and of mental health services when needed (95% vs 60%; P < .01). Need for IBD-related hospitalization and emergency department visits did not differ between groups. CONCLUSIONS Children with IBD may experience trade-offs in care coordination quality and important, non-disease-focused health services based on whom parents perceive as the main provider. Efforts to enhance cross-team coordination among families and primary and specialty care teams are needed to improve overall care quality.
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Why Do Some Caregivers of Children with Disabilities Participate in Care Management While Others Do Not? Lessons from a Population in a Pediatric Accountable Care Organization. J Health Care Poor Underserved 2021; 31:859-870. [PMID: 33410812 DOI: 10.1353/hpu.2020.0065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Accountable care organizations (ACOs) offer care coordination services in an attempt to lower costs while improving the quality of care; however, not all families participate. We conducted focus groups and individual interviews with caregivers of children who recently joined a pediatric ACO and evaluated why some caregivers of children with disabilities engage in care coordination while others do not. Four common themes emerged as factors influencing the degree of caregiver engagement in care coordination services. These themes include: (1) availability, (2) alignment of services with family need, (3) ease or difficulty of engagement, and (4) timing of services. These findings suggest that considering caregiver perspectives across stages of program development and implementation could encourage more caregivers to engage in care coordination programs.
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For Rural Hospitals That Merged, Inpatient Charges Decreased and Outpatient Charges Increased: A Pre‐/Post‐Comparison of Rural Hospitals That Merged and Rural Hospitals That Did Not Merge Between 2005 and 2015. J Rural Health 2020; 37:308-317. [DOI: 10.1111/jrh.12461] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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The effect of an accountable care organization on dental care for children with disabilities. J Public Health Dent 2020; 80:244-249. [PMID: 32519336 DOI: 10.1111/jphd.12375] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 02/19/2020] [Accepted: 05/01/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Accountable care organizations (ACOs) are a new model of health-care delivery that aim to improve care through increased provider collaboration and financial rewards for meeting cost and quality targets for a defined patient population. In this study, we examined a state policy change that effectively moved some children with disabilities into a Medicaid-serving pediatric ACO on dental service use. We hypothesize that ACOs' emphasis on prevention, care coordination, and reduction in emergency department use will extend to dental services. STUDY DESIGN/METHODS We used Ohio Medicaid administrative claims data for year 2011-2016 to examine changes in patterns of dental service use by Medicaid-eligible children with disabilities before and after enrolling in an ACO compared with similar children enrolled in non-ACO managed care plans. RESULTS Dental utilization is relatively low among Medicaid-eligible children with disabilities. We find that preventive dental visits increased 3.1% points (P < 0.05) from a baseline in the control group of 33.9 percent among ACO-enrolled children, especially among adolescent children, compared to similar children that were not in the ACO, representing an 11 percent increase in the rate of preventive dental visits relative to the comparison group. However, overall dental utilization did not increase for children with disabilities who were part of the ACO compared to similar children who were not in the ACO. CONCLUSIONS Access to dental care is a continuing challenge for children covered by Medicaid. ACOs that serve Medicaid children are well positioned to include dental services and could play an important role in improving access to dental care and increasing dental utilization.
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Rural Hospital Mergers Increased Between 2005 and 2016-What Did Those Hospitals Look Like? INQUIRY : A JOURNAL OF MEDICAL CARE ORGANIZATION, PROVISION AND FINANCING 2020; 57:46958020935666. [PMID: 32684072 PMCID: PMC7370548 DOI: 10.1177/0046958020935666] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Revised: 05/08/2020] [Accepted: 05/28/2020] [Indexed: 11/15/2022]
Abstract
The objective of this study is to determine whether key hospital-level financial and market characteristics are associated with whether rural hospitals merge. Hospital merger status was derived from proprietary Irving Levin Associates data for 2005 through 2016 and hospital-level characteristics from HCRIS, CMS Impact File Hospital Inpatient Prospective Payment System, Hospital MSA file, AHRF, and U.S. Census data for 2004 through 2016. A discrete-time hazard analysis using generalized estimating equations was used to determine whether factors were associated with merging between 2005 and 2016. Factors included measures of profitability, operational efficiency, capital structure, utilization, and market competitiveness. Between 2005 and 2016, 11% (n = 326) of rural hospitals were involved in at least one merger. Rural hospital mergers have increased in recent years, with more than two-thirds (n = 261) occurring after 2011. The types of rural hospitals that merged during the sample period differed from nonmerged rural hospitals. Rural hospitals with higher odds of merging were less profitable, for-profit, larger, and were less likely to be able to cover current debt. Additional factors associated with higher odds of merging were reporting older plant age, not providing obstetrics, being closer to the nearest large hospital, and not being in the West region. By quantifying the hazard of characteristics associated with whether rural hospitals merged between 2005 and 2016, these findings suggest it is possible to determine leading indicators of rural mergers. This work may serve as a foundation for future research to determine the impact of mergers on rural hospitals.
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How does being part of a pediatric accountable care organization impact health service use for children with disabilities? Health Serv Res 2019; 54:1007-1015. [PMID: 31388994 DOI: 10.1111/1475-6773.13199] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE To examine the impact of a Medicaid-serving pediatric accountable care organization (ACO) on health service use by children who qualify for Medicaid by virtue of a disability under the "aged, blind, and disabled" (ABD) eligibility criteria. DATA SOURCES/STUDY SETTING We evaluated a 2013 Ohio policy change that effectively moved ABD Medicaid children into an ACO model of care using Ohio Medicaid administrative claims data for years 2011-2016. STUDY DESIGN We used a difference-in-difference design to examine changes in patterns of health care service use by ABD-enrolled children before and after enrolling in an ACO compared with ABD-enrolled children enrolled in non-ACO managed care plans. DATA COLLECTION/EXTRACTION METHODS We identified 17 356 children who resided in 34 of 88 counties as the ACO "intervention" group and 47 026 ABD-enrolled children who resided outside of the ACO region as non-ACO controls. PRINCIPAL FINDINGS Being part of the ACO increased adolescent preventative service and decreased use of ADHD medications as compared to similar children in non-ACO capitated managed care plans. Relative home health service use decreased for children in the ACO. CONCLUSIONS Our overall results indicate that being part of an ACO may improve quality in certain areas, such as adolescent well-child visits, though there may be room for improvement in other areas considered important by patients and their families such as home health service.
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Satisfaction With Care Coordination for Families of Children With Disabilities. J Pediatr Health Care 2019; 33:255-262. [PMID: 30449647 DOI: 10.1016/j.pedhc.2018.08.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/03/2018] [Accepted: 08/19/2018] [Indexed: 11/24/2022]
Abstract
INTRODUCTION Children with disabilities have significant health care needs, and receipt of care coordinator services may reduce caregiver burdens. The present study assessed caregivers' experience and satisfaction with care coordination. METHOD Caregivers of Medicaid-enrolled children with disabilities (n = 2,061) completed a survey (online or by telephone) collecting information on the caregivers' experiences and satisfaction with care coordination using the Family Experiences with Coordination of Care questionnaire. RESULTS Eighty percent of caregivers with a care coordinator reported receiving help making specialist appointments, and 71% reported help obtaining community services. Caregivers who reported that the care coordinator helped with specialist appointments or was knowledgeable, supportive, and advocating for children had increased odds of satisfaction (odds ratio = 3.46, 95% confidence interval = [1.01, 11.77] and odds ratio = 1.07, 95% confidence interval = [1.03, 1.11], respectively). DISCUSSION Findings show opportunities for improving care coordination in Medicaid-enrolled children with disabilities and that some specific elements of care coordination may enhance caregiver satisfaction with care.
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Implications of eligibility category churn for pediatric payment in Medicaid. THE AMERICAN JOURNAL OF MANAGED CARE 2019; 25:114-118. [PMID: 30875179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
OBJECTIVES To describe the extent and implications of "churn" between different Medicaid eligibility classifications in a pediatric population: (1) aged, blind, and disabled (ABD) Medicaid eligibility, determined by disability status and family income; and (2) Healthy Start Medicaid eligibility, determined by family income alone. STUDY DESIGN As a result of a 2013 policy change, children with ABD eligibility transitioned from fee-for-service to capitated care. We used Ohio Medicaid claims data from July 2013 through June 2015 to explore the relationships among instability in eligibility category, demographics, and utilization. METHODS To examine the potential financial effect of categorical churn, an effective capitation rate was created to capture the proportion of the maximum potential capitation rate that was realized. RESULTS More than 20% of children exited ABD-based eligibility at least once. Switching was associated with younger age and rural residence and was not associated with healthcare use. CONCLUSIONS Switching between eligibility categories is common and affects average capitation but not health service use.
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Gender Differences in Hospital CEO Compensation: A National Investigation of Not-for-Profit Hospitals. Med Care Res Rev 2018; 76:830-846. [PMID: 29363388 DOI: 10.1177/1077558718754573] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Gender pay equity is a desirable social value and an important strategy to fill every organizational stratum with gender-diverse talent to fulfill an organization's goals and mission. This study used national, large-sample data to examine gender difference in CEO compensation among not-for-profit hospitals. Results showed the average unadjusted annual compensation for female CEOs in 2009 was $425,085 compared with $581,121 for male CEOs. With few exceptions, the difference existed across all types of not-for-profit hospitals. After controlling for hospital- and area-level characteristics, female CEOs of not-for-profit hospitals earned 22.6% less than male CEOs of not-for-profit hospitals. This translates into an earnings differential of $132,652 associated with gender. Explanations and implications of the results are discussed.
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Impact of Accountable Care Organizations on Utilization, Care, and Outcomes: A Systematic Review. Med Care Res Rev 2017; 76:255-290. [PMID: 29231131 DOI: 10.1177/1077558717745916] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Since 2010, more than 900 accountable care organizations (ACOs) have formed payment contracts with public and private insurers in the United States; however, there has not been a systematic evaluation of the evidence studying impacts of ACOs on care and outcomes across payer types. This review evaluates the quality of evidence regarding the association of public and private ACOs with health service use, processes, and outcomes of care. The 42 articles identified studied ACO contracts with Medicare ( N = 24 articles), Medicaid ( N = 5), commercial ( N = 11), and all payers ( N = 2). The most consistent associations between ACO implementation and outcomes across payer types were reduced inpatient use, reduced emergency department visits, and improved measures of preventive care and chronic disease management. The seven studies evaluating patient experience or clinical outcomes of care showed no evidence that ACOs worsen outcomes of care; however, the impact on patient care and outcomes should continue to be monitored.
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Private sector accountable care organization development: a qualitative study. THE AMERICAN JOURNAL OF MANAGED CARE 2017; 23:151-158. [PMID: 28385025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
OBJECTIVES To explore accountable care organizations (ACOs) as they develop in the private sector, including their motivation for development, perspectives from consumers regarding these emerging ACOs, and the critical success factors associated with ACO development. STUDY DESIGN Comprehensive organizational case studies of 4 full-risk private sector ACOs that included in-person interviews with providers and administrators and focus groups with local consumers. METHODS Sixty-eight key informant interviews conducted during site visits, supplemented by document collection and telephone interviews, and 5 focus groups were held with 52 consumers associated with the study ACOs. RESULTS We found 3 main motivators for private sector ACO development: 1) opportunity to improve quality and efficiency, 2) potential to improve population health, and 3) belief that payment reform is inevitable. With respect to consumer perspectives, consumers were unaware they received care from an ACO. From the perspectives of ACO stakeholders, these ACOs noted that they prefer to focus on patients' relationships with providers and typically do not emphasize the ACO name or entity. Critical success factors for private sector ACO development included provider engagement, strategic buy-in, prior experience managing risk, IT infrastructure, and leadership, all meant to shift the culture to a focus on value instead of volume. CONCLUSIONS These organizations perceived that pursuing an accountable care strategy allowed them to respond to policy changes anticipated to impact the way healthcare is delivered and reimbursed. Increased understanding of factors that have been important for more mature private sector ACOs may help other healthcare organizations as they strive to enhance value and advance in their ACO journeys.
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Analysis of hospital community benefit expenditures' alignment with community health needs: evidence from a national investigation of tax-exempt hospitals. Am J Public Health 2015; 105:914-21. [PMID: 25790412 DOI: 10.2105/ajph.2014.302436] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
OBJECTIVES We investigated whether federally tax-exempt hospitals consider community health needs when deciding how much and what types of community benefits to provide. METHODS Using 2009 data from hospital tax filings to the Internal Revenue Service and the 2010 County Health Rankings, we employed both univariate and multivariate analyses to examine the relationship between community health needs and the types and levels of hospitals' community benefit expenditures. The study sample included 1522 private, tax-exempt hospitals throughout the United States. RESULTS We found some patterns between community health needs and hospitals' expenditures on community benefits. Hospitals located in communities with greater health needs spent more as a percentage of their operating budgets on benefits directly related to patient care. By contrast, spending on community health improvement initiatives was unrelated to community health needs. CONCLUSIONS Important opportunities exist for tax-exempt hospitals to improve the alignment between their community benefit activities and the health needs of the community they serve. The Affordable Care Act requirement that hospitals conduct periodic community health needs assessments may be a first step in this direction.
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Synthetic lethal screening reveals FGFR as one of the combinatorial targets to overcome resistance to Met-targeted therapy. Oncogene 2014; 34:1083-93. [PMID: 24662823 DOI: 10.1038/onc.2014.51] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Revised: 12/30/2013] [Accepted: 01/14/2014] [Indexed: 12/28/2022]
Abstract
Met is a receptor tyrosine kinase that promotes cancer progression. In addition, Met has been implicated in resistance of tumors to various targeted therapies such as epidermal growth factor receptor inhibitors in lung cancers, and has been prioritized as a key molecular target for cancer therapy. However, the underlying mechanism of resistance to Met-targeting drugs is poorly understood. Here, we describe screening of 1310 genes to search for key regulators related to drug resistance to an anti-Met therapeutic antibody (SAIT301) by using a small interfering RNA-based synthetic lethal screening method. We found that knockdown of 69 genes in Met-amplified MKN45 cells sensitized the antitumor activity of SAIT301. Pathway analysis of these 69 genes implicated fibroblast growth factor receptor (FGFR) as a key regulator for antiproliferative effects of Met-targeting drugs. Inhibition of FGFR3 increased target cell apoptosis through the suppression of Bcl-xL expression, followed by reduced cancer cell growth in the presence of Met-targeting drugs. Treatment of cells with the FGFR inhibitors substantially restored the efficacy of SAIT301 in SAIT301-resistant cells and enhanced the efficacy in SAIT301-sensitive cells. In addition to FGFR3, integrin β3 is another potential target for combination treatment with SAIT301. Suppression of integrin β3 decreased AKT phosphorylation in SAIT301-resistant cells and restored SAIT301 responsiveness in HCC1954 cells, which are resistant to SAIT301. Gene expression analysis using CCLE database shows that cancer cells with high levels of FGFR and integrin β3 are resistant to crizotinib treatment, suggesting that FGFR and integrin β3 could be used as predictive markers for Met-targeted therapy and provide a potential therapeutic option to overcome acquired and innate resistance for the Met-targeting drugs.
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Implementing high-performance work practices in healthcare organizations: qualitative and conceptual evidence. J Healthc Manag 2013; 58:446-464. [PMID: 24400459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Studies across industries suggest that the systematic use of high-performance work practices (HPWPs) may be an effective but underused strategy to improve quality of care in healthcare organizations. Optimal use of HPWPs depends on how they are implemented, yet we know little about their implementation in healthcare. We conducted 67 key informant interviews in five healthcare organizations, each considered to have exemplary work practices in place and to deliver high-quality care, as part of an extensive study of HPWP use in healthcare. We analyzed interview transcripts inductively and deductively to examine why and how organizations implement HPWPs. We used an evidence-based model of complex innovation adoption to guide our exploration of factors that facilitate HPWP implementation. We found considerable variability in interviewees' reasons for implementing HPWPs, including macro-organizational (strategic level) and micro-organizational (individual level) reasons. This variability highlighted the complex context for HPWP implementation in many organizations. We also found that our application of an innovation implementation model helped clarify and categorize facilitators of HPWP implementation, thus providing insight on how these factors can contribute to implementation effectiveness. Focusing efforts on clarifying definitions, building commitment, and ensuring consistency in the application of work practices may be particularly important elements of successful implementation.
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Implementing High-Performance Work Practices in Healthcare Organizations: Qualitative and Conceptual Evidence. J Healthc Manag 2013. [DOI: 10.1097/00115514-201311000-00011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Hospital ownership and community benefit: looking beyond uncompensated care. J Healthc Manag 2013; 58:126-142. [PMID: 23650697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Not-for-profit (NFP) hospitals have come under increased public scrutiny for management practices that are inconsistent with their charitable focus. Of particular concern is the amount of community benefit provided by NFP hospitals compared to for-profit (FP) hospitals given the substantial tax benefits afforded to NFP hospitals. This study examines hospital ownership and community benefit provision beyond the traditional uncompensated care comparison by using broader measures of community benefit that capture charitable services, community assessment and partnership, and community-oriented health services. The study sample includes 3,317 nongovernment, general, acute care, community hospitals that were in operation in 2006. Data for this study came from the 2006 American Hospital Association Hospital Survey and the 2006 Area Resource File. We used multivariate regression analyses to examine the relationship between hospital ownership and five indicators of community benefit, controlling for hospital characteristics, market demand, hospital competition, and state regulations for community benefit. We found that NFP hospitals report more community benefit activities than do FP hospitals that extend beyond uncompensated care. Our findings underscore the importance of defining and including activities beyond uncompensated care when evaluating community benefit provided by NFP hospitals.
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Hospital capital budgeting in an era of transformation. JOURNAL OF HEALTH CARE FINANCE 2013; 39:14-22. [PMID: 23614263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The Patient Protection and Affordable Care Act (PPACA), signed into law in 2010, is transforming the health care marketplace. This transformation requires health system leaders and health finance scholars to re-examine hospital capital budgeting practices in the context of new delivery models. Within the context of accountable care organizations (ACOs), this article discusses the components of the hospital capital budgeting process, identifies current practices that may require new methods or approaches, and suggests areas where existing or future research can inform capital budgeting going forward. We conclude that while much evidence is available to begin to inform hospital capital budgeting in an ACO, hospital leaders and health finance scholars will need to look to early adopters of the ACO model of care for new knowledge about the most efficient and effective methods of capital allocation.
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Challenges and facilitators of community clinical oncology program participation: a qualitative study. J Healthc Manag 2013; 58:29-46. [PMID: 23424817 PMCID: PMC3763953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Successful participation in the National Cancer Institute's Community Clinical Oncology Program (CCOP) can expand access to clinical trials and promote cancer treatment innovations for patients and communities without access to major cancer centers. Yet CCOP participation involves administrative, financial, and organizational challenges that can affect hospital and provider participants. This study was designed to improve our understanding of challenges associated with CCOP participation from the perspectives of involved providers and to learn about opportunities to overcome these challenges. We conducted five case studies of hospitals and providers engaged with the CCOP. Across organizations, we interviewed 41 key administrative, physician, and nurse informants. We asked about CCOP participation, focusing on issues related to implementation, operations, and organizational support. Challenges associated with CCOP participation included lack of appreciation for the value of participation and poor understanding about CCOP operations, cost, and required workflow changes, among others. Informants also suggested opportunities to facilitate participation: (1) increase awareness of the CCOP, (2) enhance commitment to the CCOP, and (3) promote and support champions of the CCOP. Improving our understanding of the challenges and facilitators of CCOP participation may assist hospitals and providers in increasing and sustaining participation in the CCOP, thus helping to preserve access to innovative cancer treatment options for patients in need.
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The role of non-operating income in community benefit provision by not-for-profit hospitals. JOURNAL OF HEALTH CARE FINANCE 2013; 39:59-70. [PMID: 23614268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Not-for-profit hospitals are under increased public scrutiny for providing what some view as insufficient levels of community benefit compared to their tax-exempt benefits. One potential driver of community benefit is financial surplus, which arises from both patient care (operating) activities and non-patient care (non-operating) activities. This study addresses the effect of hospitals' non-operating income on not-for-profit hospitals' provision of community benefit. The study sample includes 217 unique not-for-profit, non-governmental, general, acute care hospitals in California between 1997 and 2010 that filed annual reports with the California Office of Statewide Health Planning and Development (OSHPD). We model the effect of hospitals' operating and non-operating incomes on hospitals' community benefit, controlling for observable hospital characteristics such as scale and system membership, local competition, time trends, and hospital fixed effects. Our results indicate that non-operating income has no effect on levels of community benefit provided by not-for-profit hospitals. This finding suggests that not-for-profit hospitals budget for uncompensated care at levels that are prioritized over other potential investments if non-operating income falls, but remain fixed if non-operating income rises.
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Cbl-independent degradation of Met: ways to avoid agonism of bivalent Met-targeting antibody. Oncogene 2012. [DOI: 10.1038/onc.2012.551] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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Why providers participate in clinical trials: considering the National Cancer Institute's Community Clinical Oncology Program. Contemp Clin Trials 2012; 33:1143-9. [PMID: 22925970 PMCID: PMC3705555 DOI: 10.1016/j.cct.2012.08.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2012] [Revised: 06/22/2012] [Accepted: 08/14/2012] [Indexed: 11/16/2022]
Abstract
BACKGROUND The translation of research evidence into practice is facilitated by clinical trials such as those sponsored by the National Cancer Institute's Community Clinical Oncology Program (CCOP) that help disseminate cancer care innovations to community-based physicians and provider organizations. However, CCOP participation involves unsubsidized costs and organizational challenges that raise concerns about sustained provider participation in clinical trials. OBJECTIVES This study was designed to improve our understanding of why providers participate in the CCOP in order to inform the decision-making process of administrators, clinicians, organizations, and policy-makers considering CCOP participation. RESEARCH METHODS We conducted a multi-site qualitative study of five provider organizations engaged with the CCOP. We interviewed 41 administrative and clinician key informants, asking about what motivated CCOP participation, and what benefits they associated with involvement. We deductively and inductively analyzed verbatim interview transcripts, and explored themes that emerged. RESULTS Interviewees expressed both "altruistic" and "self-interested" motives for CCOP participation. Altruistic reasons included a desire to increase access to clinical trials and feeling an obligation to patients. Self-interested reasons included the desire to enhance reputation, and a need to integrate disparate cancer care activities. Perceived benefits largely matched expressed motives for CCOP participation, and included internal and external benefits to the organization, and quality of care benefits for both patients and participating physicians. CONCLUSION The motives and benefits providers attributed to CCOP participation are consistent with translational research goals, offering evidence that participation can contribute value to providers by expanding access to innovative medical care for patients in need.
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A method for analyzing the business case for provider participation in the National Cancer Institute's Community Clinical Oncology Program and similar federally funded, provider-based research networks. Cancer 2012; 118:4253-61. [PMID: 22213241 DOI: 10.1002/cncr.27375] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Revised: 11/14/2011] [Accepted: 11/21/2011] [Indexed: 11/09/2022]
Abstract
BACKGROUND The Community Clinical Oncology Program (CCOP) plays an essential role in the efforts of the National Cancer Institute (NCI) to increase enrollment in clinical trials. Currently, there is little practical guidance in the literature to assist provider organizations in analyzing the return on investment (ROI), or business case, for establishing and operating a provider-based research network (PBRN) such as the CCOP. In this article, the authors present a conceptual model of the business case for PBRN participation, a spreadsheet-based tool and advice for evaluating the business case for provider participation in a CCOP organization. METHODS A comparative, case-study approach was used to identify key components of the business case for hospitals attempting to support a CCOP research infrastructure. Semistructured interviews were conducted with providers and administrators. Key themes were identified and used to develop the financial analysis tool. RESULTS Key components of the business case included CCOP start-up costs, direct revenue from the NCI CCOP grant, direct expenses required to maintain the CCOP research infrastructure, and incidental benefits, most notably downstream revenues from CCOP patients. The authors recognized the value of incidental benefits as an important contributor to the business case for CCOP participation; however, currently, this component is not calculated. CONCLUSIONS The current results indicated that providing a method for documenting the business case for CCOP or other PBRN involvement will contribute to the long-term sustainability and expansion of these programs by improving providers' understanding of the financial implications of participation.
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The role of cognitive and learning theories in supporting successful EHR system implementation training: a qualitative study. Med Care Res Rev 2012; 69:294-315. [PMID: 22451617 DOI: 10.1177/1077558711436348] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Given persistent barriers to effective electronic health record (EHR) system implementation and use, the authors investigated implementation training practices in six organizations reputed to have ambulatory care EHR system implementation "best practices." Using the lenses of social cognitive and adult learning theories, they explored themes related to EHR implementation training using qualitative data collected through 43 key informant interviews and 6 physician focus groups conducted between February 2009 and December 2010. The authors found consistent evidence that training practices across the six organizations known for exemplary implementations were congruent with the tenets of these theoretical frameworks and highlight seven best practices for training. The authors' analyses suggest that effective training programs must move beyond technical approaches and incorporate social and cultural factors to make a difference in implementation success. Taking these findings into account may increase the likelihood of successful EHR implementation, thereby helping organizations meet "meaningful use" requirements for EHR systems.
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Trust and distrust among Appalachian women regarding cervical cancer screening: a qualitative study. PATIENT EDUCATION AND COUNSELING 2012; 86:120-6. [PMID: 21458195 PMCID: PMC3178720 DOI: 10.1016/j.pec.2011.02.023] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2011] [Revised: 02/04/2011] [Accepted: 02/23/2011] [Indexed: 05/19/2023]
Abstract
OBJECTIVE To explore Appalachian women's perceptions of trust and distrust of healthcare providers and the medical care system as they relate to views about cervical cancer and screening. METHODS Thirty-six Ohio Appalachia female residents participated in community focus groups conducted by trained facilitators. Discussion topics included factors related to cervical cancer, and the issues of trust and distrust in medical care. The tape-recorded focus groups were transcribed and analyzed to identify salient themes. RESULTS Five themes emerged related to trust in healthcare. Patient-centered communication and encouragement from a healthcare provider led women to trust their physicians and the medical care system. In contrast, lack of patient-centered communication by providers and perceptions of poor quality of care led to distrust. Physician gender concordance also contributed to trust as women reported trust of female physicians and distrust of male physicians; trust in male physicians was reported to be increased by the presence of a female nurse. CONCLUSIONS Important factors associated with trust and distrust of providers and the medical care system may impact health-seeking behaviors among underserved women. PRACTICE IMPLICATIONS Opportunities to improve patient-centered communication around the issues of prevention and cervical cancer screening (such as providing patient-focused information about access to appropriate screening tests) could be used to improve patient care and build patients' trust.
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Exploring the business case for ambulatory electronic health record system adoption. J Healthc Manag 2011; 56:169-182. [PMID: 21714372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Widespread implementation and use of electronic health record (EHR) systems has been recognized by healthcare leaders as a cornerstone strategy for systematically reducing medical errors and improving clinical quality. However, EHR adoption requires a significant capital investment for healthcare providers, and cost is often cited as a barrier. Despite the capital requirements, a true business case for EHR system adoption and implementation has not been made. This is of concern, as the lack of a business case can influence decision making about EHR investments. The purpose of this study was to examine the role of business case analysis in healthcare organizations' decisions to invest in ambulatory EHR systems, and to identify what factors organizations considered when justifying an ambulatory EHR. Using a qualitative case study approach, we explored how five organizations that are considered to have best practices in ambulatory EHR system implementation had evaluated the business case for EHR adoption. We found that although the rigor of formal business case analysis was highly variable, informants across these organizations consistently reported perceiving that a positive business case for EHR system adoption existed, especially when they considered both financial and non-financial benefits. While many consider EHR system adoption inevitable in healthcare, this viewpoint should not deter managers from conducting a business case analysis. Results of such an analysis can inform healthcare organizations' understanding about resource allocation needs, help clarify expectations about financial and clinical performance metrics to be monitored through EHR systems, and form the basis for ongoing organizational support to ensure successful system implementation.
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The role of financial market performance in hospital capital investment. JOURNAL OF HEALTH CARE FINANCE 2011; 37:38-50. [PMID: 21528832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Many not-for-profit hospitals hold large portfolios of financial investments, making them vulnerable to fluctuations in market performance. This article examines the association of bond and equity market performance with investment in property, plant, and equipment by 194 not-for-profit general hospitals in California over the period 1997 to 2006. The study combines retrospective panel data from the California Office of Statewide Health Planning and Development with year-end returns on the S&P 500 and ten-year US Treasury bonds. Using fixed-effects regression, we find a significant positive association between S&P 500 performance and hospitals' capital investment; investment is not correlated with ten-year Treasury bond performance.
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Abstract
BACKGROUND Despite evidence of the importance of cervical cancer screening, screening rates in the United States remain below national prevention goals. Women in the Appalachia Ohio region have higher cervical cancer incidence and mortality rates along with lower cancer screening rates. This study explored the expectations of Appalachian Ohio women with regard to Papanicolaou (Pap) test cost and perceptions of cost as a barrier to screening. METHODS Face-to-face interviews were conducted with 571 women who were part of a multilevel, observational community-based research program in Appalachia Ohio. Eligible women were identified through 14 participating health clinics and asked questions regarding Pap test cost and perceptions of cost as a barrier to screening. Estimates of medical costs were compared with actual costs reported by clinics. RESULTS When asked about how much a Pap test would cost, 80% of the women reported they did not know. Among women who reportedly believed they knew the cost, 40% overestimated test cost. Women who noted cost as a barrier were twice as likely to not receive a test within screening guidelines as those who did not perceive a cost barrier. Furthermore, uninsured women were more than 8.5 times as likely to note cost as a barrier than women with private insurance. CONCLUSIONS Although underserved women in need of cancer screening commonly report cost as a barrier, the findings of the current study suggest that women may have a very limited and often inaccurate understanding concerning Pap test cost. Providing women with this information may help reduce the impact of this barrier to screening.
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Abstract
The delivery of health care is a capital-intensive industry, and thus, hospital investment strategy continues to be an important area of interest for both health policy and research. Much attention has been given to hospitals' capital investment policies with relatively little attention to investments in financial assets, which serve an important role in not-for-profit (NFP) hospitals. This study describes and analyzes trends in aggregate asset structure between NFP and investor-owned (IO) hospitals during the post-capital-based prospective payment system implementation period, providing the first documentation of long-term trends in hospital investment. The authors find hospitals' aggregate asset structure differs significantly based on ownership, size, and profitability. For both NFP and IO hospitals, financial securities have remained consistent over time, while fixed asset representation has declined in IO hospitals.
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Financial preconditions for successful community initiatives for the uninsured. J Healthc Manag 2007; 52:411-424. [PMID: 18087981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
Community-based initiatives are increasingly being implemented as a strategy to address the health needs of the community, with a growing body of evidence on successes of various initiatives. This study addresses financial status indicators (preconditions) that might predict where community-based initiatives might have a better chance for success. We evaluated five community-based initiatives funded by the Communities in Charge (CIC) program sponsored by the Robert Wood Johnson Foundation. These initiatives focus on increasing access by easing financial barriers to care for the uninsured. At each site, we collected information on financial status indicators and interviewed key personnel from health services delivery and financing organizations. With full acknowledgment of the caveats associated with generalizations based on a small number of observations, we suggest four financial preconditions associated with successful initiation of CIC programs: (1) uncompensated care levels that negatively affect profitability, (2) reasonable financial stability of providers, (3) stable health insurance market, and (4) the potential to create new sources of funding. In general, sites that demonstrate successful program initiation are financially stressed enough by uncompensated care to gain the attention of local healthcare providers. However, they are not so strained and so concerned about revenue sources that they cannot afford to participate in the initiative. In addition to political and managerial indicators, we suggest that planning for community-based initiatives should include financial indicators of current health services delivery and financing organizations and consideration of whether they meet preconditions for success.
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Abstract
Faced with growing numbers of uninsured people, many communities are developing local programs to provide coverage or improve access. Some might predict that only those with health problems would participate; however, little is known about who enrolls. This paper examines participation and retention in three different community programs aimed at low-income uninsured adults. In two of the three programs, the typical participant had no health problems. Improved access to preventive and routine physician care, and increased security about getting access to care should the need arise, appeared to be the primary benefits of both initial and continued enrollment.
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Quantum computing of quantum chaos and imperfection effects. PHYSICAL REVIEW LETTERS 2001; 86:2162-2165. [PMID: 11289880 DOI: 10.1103/physrevlett.86.2162] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2000] [Indexed: 05/23/2023]
Abstract
We study numerically the imperfection effects in the quantum computing of the kicked rotator model in the regime of quantum chaos. It is shown that there are two types of physical characteristics: for one of them the quantum computation errors grow exponentially with the number of qubits in the computer, while for the other the growth is polynomial. A certain similarity between classical and quantum computing errors is also discussed.
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Scaling near the quantum chaos border in interacting fermi systems. PHYSICAL REVIEW. E, STATISTICAL PHYSICS, PLASMAS, FLUIDS, AND RELATED INTERDISCIPLINARY TOPICS 2000; 62:R7575-R7578. [PMID: 11138104 DOI: 10.1103/physreve.62.r7575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2000] [Revised: 09/25/2000] [Indexed: 05/23/2023]
Abstract
The emergence of quantum chaos for interacting Fermi systems is investigated by numerical calculation of the level spacing distribution P(s) as a function of interaction strength U and the excitation energy epsilon above the Fermi level. As U increases, P(s) undergoes a transition from Poissonian (nonchaotic) to Wigner-Dyson (chaotic) statistics and the transition is described by a single scaling parameter given by Z=(Uepsilon(alpha)-u(0))epsilon(1/(2nu)), where u(0) is a constant. While the exponent alpha, which determines the global change of the chaos border, is indecisive within a broad range of 0.9 approximately 2.0, the finiteness of nu, which comes from the increase of the Fock space size with epsilon, suggests that the transition becomes sharp as epsilon increases.
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Localization of a disordered phonon system: Anderson localization of optical phonons in AlxGa1-xAs. PHYSICAL REVIEW. B, CONDENSED MATTER 1996; 54:R2288-R2291. [PMID: 9986159 DOI: 10.1103/physrevb.54.r2288] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Far-infrared sphere resonance in a polar semiconductor: A magneto-optical study of InSb particles. PHYSICAL REVIEW. B, CONDENSED MATTER 1993; 48:2320-2327. [PMID: 10008624 DOI: 10.1103/physrevb.48.2320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Far-infrared studies of two-dimensional random metal-insulator composites. PHYSICAL REVIEW. B, CONDENSED MATTER 1992; 46:4212-4221. [PMID: 10004152 DOI: 10.1103/physrevb.46.4212] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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Analysis of antigenic polypeptides of Dane particles and antibody response ability of HBV infected subjects to PreS1 polypeptides. JOURNAL OF TONGJI MEDICAL UNIVERSITY = TONG JI YI KE DA XUE XUE BAO 1992; 12:48-53. [PMID: 1377756 DOI: 10.1007/bf02887759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
We demonstrated the constitutive polypeptides (PP) of Dane particles employing Western Blot and investigated the antibody response ability of HBV infected subjects to PreS1 PP in comparison with other serum markers from HBV infected individuals. The results indicated that 1) the major reason for discrepant results may be related to the detergents used in the sample solutions and the degree of denaturation the samples had undergone; 2) there are 12 bands in the PAGE-graph of Dane particles. By Western Blot it was confirmed that 5 PP (P24, P27, P36, P39, P42) are derived from S-open reading frame (S-ORF), P21 is associated with C-ORF, P24-25 possesses some epitopes of Pol protein, and P45 and P76 express similar epitopes to human IgG and IgM; and 3) the prevalence of anti-PreS1 PP was 17.24% in the group of healthy persons following latent HBV infection, much higher than that of HBV infected patients (1.21%). The above findings imply that antibody response ability of the host to PreS1 PP is attributing to the outcome of HBV infection. It may play an important role in the elimination of the virus.
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Hepatitis D virus infection in liver tissues of patients with hepatitis B in China. Chin Med J (Engl) 1992; 105:204-8. [PMID: 1395839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
2,346 liver samples from 17 cities of China for intrahepatic hepatitis D antigen (HDAg) were studied by direct enzyme-labelled technique. HDAg was detected in 167 out of 1,764 samples of HBsAg positive individuals making a detection rate of 9.47%. Hepatitis D virus (HDV) infection existed in all the examined districts with no significant difference in the HDAg detection rate. It was found that the intrahepatic HDAg detection rate was related to the pathologic type of the liver disease. The HDAg detection rate in chronic liver diseases and severe hepatitis was higher than in other liver diseases. It suggests that HDV infection is associated with the progression and chronicity of the liver disease. Studies on the relationship between HDV infection and HBV replication showed that HBV replication might be suppressed by HDV infection. Both HDV and HBV, however, could replicate in the same hepatocyte simultaneously.
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Self-consistency conditions for the effective-medium approximation in composite materials. PHYSICAL REVIEW. B, CONDENSED MATTER 1991; 44:5459-5464. [PMID: 9998377 DOI: 10.1103/physrevb.44.5459] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
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A study on hepatitis D virus infection in liver tissues of patients with hepatitis B in China. JOURNAL OF TONGJI MEDICAL UNIVERSITY = TONG JI YI KE DA XUE XUE BAO 1990; 10:65-8. [PMID: 2213954 DOI: 10.1007/bf02887862] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
2346 liver samples from 17 areas in China were investigated for intrahepatic hepatitis D antigen (HDAg) by direct enzyme-labelled technique. HDAg was detected in 167 out of 1764 samples of HBsAg positive individuals with the detection rate of 9.47%. Hepatitis D virus (HDV) infection existed in all the examined areas without any significant difference regarding HDAg detection rate. A relationship of intrahepatic HDAg to the pathologic type of the liver disease was observed. The HDAg detection rate in chronic liver diseases and severe hepatitis was higher than in other liver diseases. It suggested that HDV infection was associated with the progression and chronicity of the liver disease. Studies on the relationship between HDV infection and HBV replication showed that HBV replication might be suppressed by HDV infection. Both HDV and HBV, however, could replicate in the same hepatocyte simultaneously.
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Preliminary research on the relationship between expression of HBV antigens and liver cell necrosis in the liver tissue of patients with chronic liver diseases. JOURNAL OF TONGJI MEDICAL UNIVERSITY = TONG JI YI KE DA XUE XUE BAO 1988; 8:24-8. [PMID: 3199481 DOI: 10.1007/bf02887773] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Immunohistochemical studies on hepatitis B markers in the liver tissue of patients with hepatocellular carcinoma. JOURNAL OF TONGJI MEDICAL UNIVERSITY = TONG JI YI KE DA XUE XUE BAO 1987; 7:117-22. [PMID: 2821287 DOI: 10.1007/bf02888173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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The relationship between T cell subsets and T suppressor cell function in hepatitis B. JOURNAL OF TONGJI MEDICAL UNIVERSITY = TONG JI YI KE DA XUE XUE BAO 1987; 7:111-6. [PMID: 2958640 DOI: 10.1007/bf02888172] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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