Bazzoli GJ, Madura KJ, Cooper GF, MacKenzie EJ, Maier RV. Progress in the development of trauma systems in the United States:
results of a national survey. JAMA.1995;273:395-401.
West JG, Williams MJ, Trunkey DD, Wolferth CC. Trauma systems: current status—future challenges. JAMA.1988;259:3597-3600.
Birkmeyer JD, Finlayson SR, Tosteson AN, Sharp SM, Warshaw AL, Fisher ES. Effect of hospital volume on in-hospital mortality with pancreaticoduodenectomy. Surgery.1999;125:250-256.
Solomon RA, Mayer SA, Tarmey JJ. Relationship between the volume of craniotomies for cerebral aneurysm
performed at New York state hospitals and in-hospital mortality. Stroke.1996;27:13-17.
Begg CB, Cramer LD, Hoskins WJ, Brennan MF. Impact of hospital volume on operative mortality for major cancer surgery. JAMA.1998;280:1747-1751.
Hannan EL, Popp AJ, Tranmer B, Fuestel P, Waldman J, Shah D. Relationship between provider volume and mortality for carotid endarterectomies
in New York State. Stroke.1998;29:2292-2297.
Hannan EL, Kilburn Jr H, Bernard H, O'Donnell JF, Lukacik G, Shields EP. Coronary artery bypass surgery: the relationship between in-hospital
mortality rate and surgical volume after controlling for clinical risk factors. Med Care.1991;29:1094-1107.
Luft HS, Bunker JP, Enthoven AC. Should operations be regionalized? the empirical relation between surgical
volume and mortality. N Engl J Med.1979;301:1364-1369.
American College of Surgeons Committee on Trauma. Resources for Optimal Care of the Injured Patient
1999. Chicago, Ill: American College of Surgeons; 1998.
University Healthsystem Consortium UHC Net. Available at: http://www.uhc.edu. Accessed December 17,
AAAM Abbreviated Injury Scale, 1990 Revision . Des Plaines, Ill: Association for the Advancement of Automotive Medicine;
Baker SP, O'Neill B, Haddon Jr W, Long WB. The injury severity score: a method for describing patients with multiple
injuries and evaluating emergency care. J Trauma.1974;14:187-196.
Brenneman FD, Boulanger BR, McLellan BA, Redelmeier DA. Measuring injury severity: time for a change? J Trauma.1998;44:580-582.
Osler T, Baker SP, Long W. A modification of the injury severity score that both improves accuracy
and simplifies scoring. J Trauma.1997;43:922-925.
Mickey RM, Greenland S. The impact of confounder selection criteria on effect estimation. Am J Epidemiol.1989;129:125-137.
Meredith W, Rutledge R, Fakhry SM, Emery S, Kromhout-Schiro S. The conundrum of the Glasgow Coma Scale in intubated patients: a linear
regression prediction of the Glasgow verbal score from the Glasgow eye and
motor scores. J Trauma.1998;44:839-844.
Royston P, Altman DG. Regression using fractional polynomials of continuous covariates: parsimonious
parametric modelling. Appl Stat.1994;43:429-467.
Greenland S. Dose-response and trend analysis in epidemiology: alternatives to categorical
West JG, Trunkey DD, Lim RC. Systems of trauma care: a study of two counties. Arch Surg.1979;114:455-460.
Smith RF, Frateschi L, Sloan EP.
et al. The impact of volume on outcome in seriously injured trauma patients:
two years' experience of the Chicago trauma system. J Trauma.1990;30:1066-1076.
Tepas III JJ, Patel JC, DiScala C, Wears RL, Veldenz HC. Relationship of trauma patient volume to outcome experience: can a
relationship be defined? J Trauma.1998;44:827-830.
Konvolinka CW, Copes WS, Sacco WJ. Institution and per-surgeon volume versus survival outcome in Pennsylvania's
trauma centers. Am J Surg.1995;170:333-340.
Cooper A, Hannan EL, Bessey PQ, Farrell LS, Cayten CG, Mottley L. An examination of the volume-mortality relationship for New York State
trauma centers. J Trauma.2000;48:16-23.
Buechler CM, Blostein PA, Koestner A, Hurt K, Schaars M, McKernan J. Variation among trauma centers' calculation of Glasgow Coma Scale score:
results of a national survey. J Trauma.1998;45:429-432.