Published in Health Aff (Millwood) on January 01, 1988
Fitness memberships and favorable selection in Medicare Advantage plans. N Engl J Med (2012) 2.38
Chronic disease, functional health status, and demographics: a multi-dimensional approach to risk adjustment. Health Serv Res (1996) 1.81
No exit? The effect of health status on dissatisfaction and disenrollment from health plans. Health Serv Res (1999) 1.64
Impact of report cards on employees: a natural experiment. Health Care Financ Rev (1998) 1.53
Enrollee health status under Medicare risk contracts: an analysis of mortality rates. Health Serv Res (1991) 1.20
Mental health care utilization in prepaid and fee-for-service plans among depressed patients in the Medical Outcomes Study. Health Serv Res (1995) 1.03
Selection in a preferred provider organization enrollment. Health Serv Res (1993) 0.90
MEDICARE PAYMENTS AND SYSTEM-LEVEL HEALTH-CARE USE: The Spillover Effects of Medicare Managed Care. Am J Health Econ (2015) 0.86
HMO versus non-HMO private managed care plans: an investigation on pre-switch consumption. Health Care Manag Sci (2007) 0.76
Managed-care plans. Their future under national health insurance. West J Med (1991) 0.75
Ignoring small predictable profits and losses: a new approach for measuring incentives for cream skimming. Health Care Manag Sci (2000) 0.75
One-step preparation of competent Escherichia coli: transformation and storage of bacterial cells in the same solution. Proc Natl Acad Sci U S A (1989) 11.49
Should operations be regionalized? The empirical relation between surgical volume and mortality. N Engl J Med (1979) 11.10
How do health-maintenance organizations achieve their "savings"? N Engl J Med (1978) 8.55
A glial progenitor cell that develops in vitro into an astrocyte or an oligodendrocyte depending on culture medium. Nature (1983) 6.52
Health services research as a scientific process: the metamorphosis of an empirical research project from grant proposal to final report. Health Serv Res (1986) 6.32
Does managed care lead to better or worse quality of care? Health Aff (Millwood) (1997) 6.17
Genetic heterogeneity of hepatitis C virus: quasispecies and genotypes. Semin Liver Dis (1995) 5.53
Nucleotide sequence and mutation rate of the H strain of hepatitis C virus. Proc Natl Acad Sci U S A (1991) 5.51
Managed care plan performance since 1980. A literature analysis. JAMA (1994) 5.27
The relation between surgical volume and mortality: an exploration of causal factors and alternative models. Med Care (1980) 5.05
Lack of protective immunity against reinfection with hepatitis C virus. Science (1992) 4.94
A rapid and convenient method for the preparation and storage of competent bacterial cells. Nucleic Acids Res (1988) 4.86
A long-term study of hepatitis C virus replication in non-A, non-B hepatitis. N Engl J Med (1991) 4.79
The volume-outcome relationship: practice-makes-perfect or selective-referral patterns? Health Serv Res (1987) 4.29
MULTIPLE POLYPOSIS OF THE COLON: A FAMILIAL DISEASE. Ann Surg (1937) 4.16
Sequence analysis of the 5' noncoding region of hepatitis C virus. Proc Natl Acad Sci U S A (1992) 3.72
Detection of serum hepatitis B virus DNA in patients with chronic hepatitis using the polymerase chain reaction assay. Proc Natl Acad Sci U S A (1989) 3.67
Prevention of hepatitis C virus infection in chimpanzees after antibody-mediated in vitro neutralization. Proc Natl Acad Sci U S A (1994) 3.56
At least 12 genotypes of hepatitis C virus predicted by sequence analysis of the putative E1 gene of isolates collected worldwide. Proc Natl Acad Sci U S A (1993) 3.37
Appropriate measures of hospital market areas. Health Serv Res (1987) 3.29
Rapid and sensitive method for the detection of serum hepatitis B virus DNA using the polymerase chain reaction technique. J Clin Microbiol (1989) 3.19
Regionalization of cardiac surgery in the United States and Canada. Geographic access, choice, and outcomes. JAMA (1995) 3.12
Correlation of travel time on roads versus straight line distance. Med Care Res Rev (1995) 2.98
Managed care in transition. N Engl J Med (2001) 2.85
The woodchuck hepatitis virus X gene is important for establishment of virus infection in woodchucks. J Virol (1993) 2.84
Effects of surgeon volume and hospital volume on quality of care in hospitals. Med Care (1987) 2.84
Sequence analysis of the core gene of 14 hepatitis C virus genotypes. Proc Natl Acad Sci U S A (1994) 2.83
A comparison of administrative versus clinical data: coronary artery bypass surgery as an example. Ischemic Heart Disease Patient Outcomes Research Team. J Clin Epidemiol (1994) 2.79
Managed care: past evidence and potential trends. Front Health Serv Manage (1993) 2.77
Evaluating individual hospital quality through outcome statistics. JAMA (1986) 2.70
Selecting categories of patients for regionalization. Implications of the relationship between volume and outcome. Med Care (1986) 2.64
MECKEL'S DIVERTICULUM IN ACUTE ABDOMINAL EMERGENCIES. Ann Surg (1933) 2.63
The impact of hospital market structure on patient volume, average length of stay, and the cost of care. J Health Econ (1985) 2.62
Branched-chain amino acid metabolism. Annu Rev Nutr (1984) 2.58
Competition and the cost of hospital care, 1972 to 1982. JAMA (1987) 2.53
IDIOPATHIC ULCERATIVE COLITIS: A REVIEW OF 149 CASES WITH PARTICULAR REFERENCE TO THE VALUE OF, AND INDICATIONS FOR SURGICAL TREATMENT. Ann Surg (1935) 2.48
The role of specialized clinical services in competition among hospitals. Inquiry (1986) 2.47
Cross-bridges mediate anterograde and retrograde vesicle transport along microtubules in squid axoplasm. J Cell Biol (1985) 2.32
Importance of primer selection for the detection of hepatitis C virus RNA with the polymerase chain reaction assay. Proc Natl Acad Sci U S A (1992) 2.30
Association of volume with outcome of coronary artery bypass graft surgery. Scheduled vs nonscheduled operations. JAMA (1987) 2.27
Common evolutionary origin of hepatitis B virus and retroviruses. Proc Natl Acad Sci U S A (1986) 2.20
Use of coronary artery bypass surgery in the United States and Canada. Influence of age and income. JAMA (1993) 2.17
Ossifying fibroma: diagnostic clarification. Otolaryngol Head Neck Surg (1983) 2.10
Competition, regulation, and hospital costs, 1982 to 1986. JAMA (1988) 2.10
Pharmacoeconomic analyses: making them transparent, making them credible. JAMA (2000) 2.08
Deletion analysis of dengue virus type 4 nonstructural protein NS2B: identification of a domain required for NS2B-NS3 protease activity. J Virol (1993) 2.06
Costs and coverage. Pressures toward health care reform. West J Med (1992) 2.04
Health maintenance organizations and the rationing of medical care. Milbank Mem Fund Q Health Soc (1982) 2.01
Density Centrifugation Method for Recovering Rhizobium spp. from Soil for Fluorescent-Antibody Studies. Appl Environ Microbiol (1980) 2.00
Making sense out of utilization data. Med Care (1975) 1.98
Misclassification and selection bias when identifying Alzheimer's disease solely from Medicare claims records. J Am Geriatr Soc (1999) 1.95
Hepatitis B virus DNA forms in nuclear and cytoplasmic fractions of infected human liver. Virology (1984) 1.91
Assessing the evidence on HMO performance. Milbank Mem Fund Q Health Soc (1980) 1.88
Two glial cell lineages diverge prenatally in rat optic nerve. Dev Biol (1984) 1.85
Hepatitis B viral DNA-RNA hybrid molecules in particles from infected liver are converted to viral DNA molecules during an endogenous DNA polymerase reaction. Virology (1984) 1.72
Diffuse glomerulonephritis associated with infected ventriculoatrial shunt. N Engl J Med (1968) 1.67
Diverging trends in hospitalization: fact or artifact? Med Care (1981) 1.62
A quantitative immunohistochemical study of macroglial cell development in the rat optic nerve: in vivo evidence for two distinct astrocyte lineages. Dev Biol (1985) 1.59
Glossopharyngeal (vagoglossopharyngeal) neuralgia: a study of 217 cases. Arch Neurol (1981) 1.59
The sensitivity of conditional choice models for hospital care to estimation technique. J Health Econ (1989) 1.57
Charges for obstetric liability insurance and discontinuation of obstetric practice in New York. J Fam Pract (1997) 1.57
Detection of intrahepatic replication of hepatitis C virus RNA by in situ hybridization and comparison with histopathology. Proc Natl Acad Sci U S A (1992) 1.56
A double-blind, prospective, randomized study of glutamine-enriched compared with standard peptide-based feeding in critically ill patients. Am J Clin Nutr (1996) 1.54
The precore gene of the woodchuck hepatitis virus genome is not essential for viral replication in the natural host. J Virol (1992) 1.52
Preferred microtubules for vesicle transport in lobster axons. Science (1987) 1.45
Natural history of left ventricular function during 1 year after acute myocardial infarction: comparison with clinical, electrocardiographic and biochemical determinations. Am J Cardiol (1980) 1.42
Complete nucleotide sequence of a molecular clone of woodchuck hepatitis virus that is infectious in the natural host. Proc Natl Acad Sci U S A (1989) 1.41
Morphology, behavior, and interaction of cultured epithelial cells after the antibody-induced disruption of keratin filament organization. J Cell Biol (1983) 1.41
ACUTE CHOLECYSTITIS. Ann Surg (1930) 1.39
The complete nucleotide sequence of a pre-core mutant of hepatitis B virus implicated in fulminant hepatitis and its biological characterization in chimpanzees. Virology (1993) 1.39
Fibrous and protoplasmic astrocytes are biochemically and developmentally distinct. J Neurosci (1984) 1.38
Choice of hospital for delivery: a comparison of high-risk and low-risk women. Health Serv Res (1993) 1.36
Second primary malignancies in the head and neck cancer patient. Ann Otol Rhinol Laryngol (1995) 1.34
Botulinum toxin injection of the vocal fold for spasmodic dysphonia. A preliminary report. Arch Otolaryngol Head Neck Surg (1987) 1.33
Mechanically adaptive intracortical implants improve the proximity of neuronal cell bodies. J Neural Eng (2011) 1.33
Long PCR and its application to hepatitis viruses: amplification of hepatitis A, hepatitis B, and hepatitis C virus genomes. J Clin Microbiol (1996) 1.32
Competition and regulation. Med Care (1985) 1.32
Psychiatric diagnoses of medical service users: evidence from the Epidemiologic Catchment Area Program. Am J Public Health (1987) 1.30
Duplicate health insurance coverage: determinants of variation across states. Health Care Financ Rev (1982) 1.29
Factors affecting the use of physician services in a rural community. Am J Public Health (1976) 1.29
Hospital volume and patient outcomes. The case of hip fracture patients. Med Care (1988) 1.28
The impact of financial incentives on quality of health care. Milbank Q (1998) 1.27
Hepatitis B virus particles of plasma and liver contain viral DNA-RNA hybrid molecules. Virology (1984) 1.27
Neurosurgical procedures in Olmsted County, Minnesota, 1970-1974. Neurosurgical needs of a community. J Neurosurg (1977) 1.27
Effects of age and viral determinants on chronicity as an outcome of experimental woodchuck hepatitis virus infection. Hepatology (2000) 1.27
Fatal infantile cytochrome c oxidase deficiency: decrease of immunologically detectable enzyme in muscle. Neurology (1985) 1.25
Lymphoma of the spinal extradural space. Cancer (1976) 1.23
Maturation of astrocytes in vitro alters the extent and molecular basis of neurite outgrowth. Dev Biol (1990) 1.22
Lessons from the cat: feline immunodeficiency virus as a tool to develop intervention strategies against human immunodeficiency virus type 1. AIDS Res Hum Retroviruses (1998) 1.19
Evaluation of an ultrasonic device (Doppler) for the diagnosis of venous air embolism. Anesthesiology (1972) 1.18
Hepatitis B viral DNA in infected human liver and in hepatocellular carcinoma. J Infect Dis (1985) 1.18
Proteolytic self-cleavage of hepatitis B virus core protein may generate serum e antigen. Science (1987) 1.17
The in vitro differentiation of a bipotential glial progenitor cell. EMBO J (1984) 1.16
High prevalence of hepatitis C virus (HCV) RNA in dialysis patients: failure of commercially available antibody tests to identify a significant number of patients with HCV infection. Copenhagen Dialysis HCV Study Group. J Infect Dis (1993) 1.16
The costs and outcomes of restricting public access to poison control centers. Results from a natural experiment. Med Care (1998) 1.16
Inhibition of duck hepatitis B virus replication by 2',3'-dideoxycytidine. A potent inhibitor of reverse transcriptase. Gastroenterology (1989) 1.16
Integrated hepatitis B virus DNA sequences specifying the major viral core polypeptide are methylated in PLC/PRF/5 cells. Proc Natl Acad Sci U S A (1983) 1.16
X-region-specific transcript in mammalian hepatitis B virus-infected liver. J Virol (1988) 1.16
Sequence comparison of woodchuck hepatitis virus replicative forms shows conservation of the genome. Virology (1988) 1.16