SEARCH

SEARCH BY CITATION

References

  • 1
    Wennberg JE. Unwarranted variations in healthcare delivery: implications for academic medical centres. BMJ 2002; 325: 9614.
  • 2
    Rothlisberger C, Meier B. Coronary interventions in Europe 1992. The working group on coronary circulation of the European Society of Cardiology. Eur Heart J 1995; 16: 9229.
  • 3
    Gatsonis CA, Epstein AM, Newhouse JP, Normand SL, McNeil BJ. Variations in the utilization of coronary angiography for elderly patients with an acute myocardial infarction. An analysis using hierarchical logistic regression. Med Care 1995; 33: 62542.
  • 4
    Gray D, Hampton JR. Variations in the use of coronary angiography in three cities in the Trent Region. Br Heart J 1994; 71: 4748.
  • 5
    Niemann T, Lous J, Thorsgaard N, Nielsen TT. Regional variations in the use of diagnostic coronary angiography. Scand Cardiovasc J 2000; 34: 28692.
  • 6
    Niemann T, Nielsen TT, Thorsgaard N, Lous J. Differences in therapeutic consequences of exercise testing in a rural and an urban Danish county. BMJ 2001; 322: 13945.
  • 7
    Andersen TF, Madsen M, Jorgensen J, Mellemkjoer L, Olsen JH. The Danish National Hospital Register. A valuable source of data for modern health sciences. Dan Med Bull 1999; 46: 2638.
  • 8
    Juel K, Helweg-Larsen K. The Danish registers of causes of death. Dan Med Bull 1999; 46: 3547.
  • 9
    D'Hoore W, Sicotte C, Tilquin C. Risk adjustment in outcome assessment: the Charlson comorbidity index. Methods Inf Med 1993; 32: 3827.
  • 10
    D'Hoore W, Bouckaert A, Tilquin C. Practical considerations on the use of the Charlson comorbidity index with administrative data bases. J Clin Epidemiol 1996; 49: 142933.
  • 11
    De Groo V, Beckerman H, Lankhorst GJ, Bouter LM. How to measure comorbidity. a critical review of available methods. J Clin Epidemiol 2003; 56: 2219.
  • 12
    Cox DR. Regression models and life tables. J R Stat Soc 1972; B34: 187220.
  • 13
    Kalbfleisch JD, Prentice RL. The Statistical Analyses of Failure Time Data. New York: John Wiley & Sons, Inc., 1980.
  • 14
    Andersen PK, Borgan Ø, Gill R, Keiding N. Statistical Models Based on Counting Processes. New York: Springer, 1993.
  • 15
    Sackett DL, Haynes RB, Guyatt GH, Tugwell P. Clinical Epidemiology: A Basic Science for Clinical Medicine, 2nd edn. Boston/Toronto/London: Little, Brown and Company, 1991.
  • 16
    Every NR, Larson EB, Litwin PE et al. The association between on-site cardiac catheterization facilities and the use of coronary angiography after acute myocardial infarction. N Engl J Med 1993; 329: 54651.
  • 17
    McClellan M, McNeil BJ, Newhouse JP. Does more intensive treatment of acute myocardial infarction in the elderly reduce mortality? Analysis using instrumental variables [see comments]. JAMA 1994; 272: 85966.
  • 18
    Guadagnoli E, Hauptman PJ, Ayanian JZ, Pashos CL, McNeil BJ, Cleary PD. Variation in the use of cardiac procedures after acute myocardial infarction. N Engl J Med 1995; 333: 5738.
  • 19
    Tu JV, Pashos CL, Naylor CD et al. Use of cardiac procedures and outcomes in elderly patients with myocardial infarction in the United States and Canada. N Engl J Med 1997; 336: 15005.
  • 20
    Every NR, Parsons LS, Fihn SD et al. Long-term outcome in acute myocardial infarction patients admitted to hospitals with and without on-site cardiac catheterization facilities. MITI Investigators. Myocardial Infarction Triage and Intervention. Circulation 1997; 96: 17705.
  • 21
    Marrugat J, Sanz G, Masia R et al. Six-month outcome in patients with myocardial infarction initially admitted to tertiary and nontertiary hospitals. RESCATE Investigators. Recursos Empleados en el Sindrome Coronario Agudo y Tiempos de Espera. J Am Coll Cardiol 1997; 30: 118792.
  • 22
    Boden WE, O'Rourke RA, Crawford MH et al. Outcomes in patients with acute non-Q-wave myocardial infarction randomly assigned to an invasive as compared with a conservative management strategy. Veterans Affairs Non-Q-Wave Infarction Strategies in Hospital (VANQWISH) Trial Investigators[see comments] [published erratum appears in N Engl J Med 1998; 339: 1091]. N Engl J Med 1998; 338: 178592.
  • 23
    Krumholz HM, Chen J, Murillo JE, Cohen DJ, Radford MJ. Admission to hospitals with on-site cardiac catheterization facilities: impact on long-term costs and outcomes. Circulation 1998; 98: 20106.
  • 24
    Selby JV, Fireman BH, Lundstrom RJ et al. Variation among hospitals in coronary-angiography practices and outcomes after myocardial infarction in a large health maintenance organization [see comments]. N Engl J Med 1996; 335: 188896.
  • 25
    Coronary angioplasty versus coronary artery bypass surgery: the Randomized Intervention Treatment of Angina (RITA) trial. Lancet 1993; 341: 57380.
  • 26
    Pitt B, Waters D, Brown WV et al. Aggressive lipid-lowering therapy compared with angioplasty in stable coronary artery disease. Atorvastatin versus Revascularization Treatment Investigators. N Engl J Med 1999; 341: 706.
  • 27
    Black WC, Haggstrom DA, Welch HG. All-cause mortality in randomized trials of cancer screening. J Natl Cancer Inst 2002; 94: 16773.
  • 28
    Juel K, Sjol A. Decline in mortality from heart disease in Denmark: some methodological problems [see comments]. J Clin Epidemiol 1995; 48: 46772.
  • 29
    Mabeck CE, Wichmann B. Causes of death and death certificates. An evaluation of the diagnosis in 373 death certificates. Ugeskr Laeger 1980; 142: 25761.
  • 30
    Juel K. Registration of cause of death in Denmark. Ugeskr Laeger 1998; 160: 5019.
  • 31
    Madsen M, Balling H, Eriksen LS. The validity of the diagnosis of acute myocardial infarction in 2 registries: the Heart Registry compared to the National Patient Registry. Ugeskr Laeger 1990; 152: 30814.
  • 32
    Madsen M, Davidsen M, Rasmussen S, Abildstrom SZ, Osler M. The validity of the diagnosis of acute myocardial infarction in routine statistics. A comparison of mortality and hospital discharge data with the Danish MONICA registry. J Clin Epidemiol 2003; 56: 12430.