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Ann Thorac Surg 1977;24:404-408
© 1977 The Society of Thoracic Surgeons
Division of Cardiopulmonary Surgery, University of Oregon Health Sciences Center, Portland, OR.
Accepted for publication April 22, 1977.
* Address reprint requests to Dr. Grunkemeier, University of Oregon Health Sciences Center, 3181 S W Sam Jackson Park Rd, Portland, OR 97201
The use of time-related methods of statistical analysis is essential for valid evaluation of the long-term results of a surgical procedure. Accurate comparison of two procedures or two prosthetic devices is possible only when the length of follow-up is properly accounted for. The purpose of this report is to make the technical aspects of the actuarial, or life table, method easily accessible to the surgeon, with emphasis on the motivation for and the rationale behind it.
This topic is illustrated in terms of heart valve prostheses, a field that is rapidly developing. Both the authors and readers of articles must be aware that controversies surrounding the relative merits of various prosthetic designs or operative procedures can be settled only if proper time-related methods of analysis are utilized.
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Guidelines for Data Reporting and Nomenclature for The Annals of Thoracic Surgery Ann. Thorac. Surg., September 1, 1988; 46(3): 260 - 261. [PDF]
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A. D. Milano, U. Bortolotti, A. Mazzucco, F. Guerra, G. Stellin, E. Talenti, G. Thiene, and V. Gallucci Performance of the Hancock Porcine Bioprosthesis Following Aortic Valve Replacement: Considerations Based on a 15-Year Experience Ann. Thorac. Surg., August 1, 1988; 46(2): 216 - 222. [Abstract] [PDF]
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J. W. Hammon Jr., F. M. Lupinetti, M. D. Maples, W. H. Merrill, W. H. Frist, T. P. Graham Jr., and H. W. Bender Jr. Predictors of Operative Mortality in Critical Valvular Aortic Stenosis Presenting in Infancy Ann. Thorac. Surg., May 1, 1988; 45(5): 537 - 540. [Abstract] [PDF]
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 D. C. Kress, G. M. Kroncke, P. S. Chopra, D. J. Cohen, P. W. Rasmussen, R. D. Nichols, E. S. Beatty, and H. A. Berkoff Comparison of Survival in Cardiac Surgery at a Veterans Administration Hospital and Its Affiliated University Hospital Arch Surg, April 1, 1988; 123(4): 439 - 443. [Abstract] [PDF]
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A. Cobanoglu, C. L. Fessler, L. Guvendik, G. Grunkemeier, and A. Starr Aortic Valve Replacement with the Starr-Edwards Prosthesis: A Comparison of the First and Second Decades of Follow-up Ann. Thorac. Surg., March 1, 1988; 45(3): 248 - 252. [Abstract] [PDF]
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A. H. Foster, G. J. Greenberg, D. J. Underhill, C. L. McIntosh, and R. E. Clark Intrinsic Failure of Hancock Mitral Bioprostheses: 10- to 15-Year Experience Ann. Thorac. Surg., December 1, 1987; 44(6): 568 - 577. [Abstract] [PDF]
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M. N. Ilbawi, F. S. Idriss, S. Y. DeLeon, A. J. Muster, C. E. Duffy, S. S. Gidding, and M. H. Paul Valve Replacement in Children: Guidelines for Selection of Prosthesis and Timing of Surgical Intervention Ann. Thorac. Surg., October 1, 1987; 44(4): 398 - 403. [Abstract] [PDF]
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 K. M. Taylor The Clinical Aspects of Heart Valve Replacement: An Overview Engineering in Medicine, April 1, 1987; 16(2): 63 - 65. [Abstract] [PDF]
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P. J. Drury, M. M. Black, P. V. Lawford, and R. Kay The Long-Term Clinical Assessment of Heart Valve Substitutes Engineering in Medicine, April 1, 1987; 16(2): 87 - 94. [Abstract] [PDF]
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A. Cobanoglu, W. R. E. Jamieson, D. C. Miller, C. McKinley, G. L. Grunkemeier, H. S. Floten, R. T. Miyagishima, G. F. O. Tyers, N. E. Shumway, and A. Starr A Tri-Institutional Comparison of Tissue and Mechanical Valves using a Patient-Oriented Definition of "Treatment Failure" Ann. Thorac. Surg., March 1, 1987; 43(3): 245 - 253. [Abstract] [PDF]
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M. J. DaValle, L. P. Faber, C. F. Kittle, and R. J. Jensik Extrapleural Pneumonectomy for Diffuse, Malignant Mesothelioma Ann. Thorac. Surg., December 1, 1986; 42(6): 612 - 618. [Abstract] [PDF]
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M. N. Ilbawi, F. S. Idriss, S. Y. DeLeon, A. J. Muster, T. E. Berry, and M. H. Paul Long-Term Results of Porcine Valve Insertion for Pulmonary Regurgitation Following Repair of Tetralogy of Fallot Ann. Thorac. Surg., May 1, 1986; 41(5): 478 - 482. [Abstract] [PDF]
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J. C. Opie, L. Traverse, R. I. Hayden, C. Y. Ho, J. A. G. Culham, and P. G. Ashmore Experience with Polytetrafluoroethylene Grafts in Children with Cyanotic Congenital Heart Disease Ann. Thorac. Surg., February 1, 1986; 41(2): 164 - 168. [Abstract] [PDF]
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P. H. Kay and D. N. Ross Fifteen Years' Experience with the Aortic Homograft: The Conduit of Choice for Right Ventricular Outflow Tract Reconstruction Ann. Thorac. Surg., October 1, 1985; 40(4): 360 - 364. [Abstract] [PDF]
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D. L. Galbut, E. A. Traad, M. J. Dorman, P. L. DeWitt, P. B. Larsen, D. Weinstein, J. M. Ally, and T. O. Gentsch Twelve-Year Experience with Bilateral Internal Mammary Artery Grafts Ann. Thorac. Surg., September 1, 1985; 40(3): 264 - 270. [Abstract] [PDF]
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J. Brown, L. Stevens, L. Lynch, R. Caldwell, D. Girod, R. Hurwitz, L. Mahony, and H. King Surgery for Discrete Subvalvular Aortic Stenosis: Actuarial Survival, Hemodynamic Results, and Acquired Aortic Regurgitation Ann. Thorac. Surg., August 1, 1985; 40(2): 151 - 155. [Abstract] [PDF]
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J. A. Magovern, J. L. Pennock, D. B. Campbell, W. S. Pierce, and J. A. Waldhausen Risks of Mitral Valve Replacement and Mitral Valve Replacement with Coronary Artery Bypass Ann. Thorac. Surg., April 1, 1985; 39(4): 346 - 352. [Abstract] [PDF]
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C. Zussa, G. Ottino, M. di Summa, G. A. Poletti, G. F. Zattera, S. Pansini, and M. Morea Porcine Cardiac Bioprostheses: Evaluation of Long-term Results in 990 Patients Ann. Thorac. Surg., March 1, 1985; 39(3): 243 - 250. [Abstract] [PDF]
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M. P. Brais, J. P. Bedard, W. Goldstein, A. Koshal, and W. J. Keon Ionescu-Shiley Pericardial Xenografts: Follow-up of Up to 6 Years Ann. Thorac. Surg., February 1, 1985; 39(2): 105 - 111. [Abstract] [PDF]
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R. DeWall, L. C. Pelletier, A. Panebianco, G. Hicks, B. Schuster, R. Bonan, J.-P. Martineau, and L. Yip Five-Year Clinical Experience with the Omniscience Cardiac Valve Ann. Thorac. Surg., September 1, 1984; 38(3): 275 - 280. [Abstract] [PDF]
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M. J. Antunes, M. Med., and L. P. Santos Performance of Glutaraldehyde-Preserved Porcine Bioprosthesis as a Mitral Valve Substitute in a Young Population Group Ann. Thorac. Surg., May 1, 1984; 37(5): 387 - 392. [Abstract] [PDF]
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C. G. Montero, J. J. Rufilanchas, A. Juffe, R. Burgos, J. Ugarte, and D. Figuera Long-Term Results of Cardiac Valve Replacement with the Delrin-Disc Model of the Bjork-Shiley Valve Prosthesis Ann. Thorac. Surg., April 1, 1984; 37(4): 328 - 336. [Abstract] [PDF]
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A. Cobanoglu, I. Freimanis, G. Grunkemeier, L. Lambert, V. Anderson, D. Nunley, C. Garcia, and A. Starr Enhanced Late Survival Following Coronary Artery Bypass Graft Operation for Unstable versus Chronic Angina Ann. Thorac. Surg., January 1, 1984; 37(1): 52 - 59. [Abstract] [PDF]
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W. Daenen, A. Nevelsteen, P. van Cauwelaert, E. de Maesschalk, J. Willems, and G. Stalpaert Nine Years' Experience with the Bjork-Shiley Prosthetic Valve: Early and Late Results of 932 Valve Replacements Ann. Thorac. Surg., June 1, 1983; 35(6): 651 - 663. [Abstract] [PDF]
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T. Inahara and C. M. Scott Endarterectomy for Segmental Occlusive Disease of the Superficial Femoral Artery Arch Surg, December 1, 1981; 116(12): 1547 - 1553. [Abstract] [PDF]
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J. M. Dunn Porcine Valve Durability in Children Ann. Thorac. Surg., October 1, 1981; 32(4): 357 - 368. [Abstract] [PDF]
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J. F. Teply, G. L. Grunkemeier, H. D. Sutherland, L. E. Lambert, V. A. Johnson, and A. Starr The Ultimate Prognosis after Valve Replacement: An Assessment at Twenty Years Ann. Thorac. Surg., August 1, 1981; 32(2): 111 - 119. [Abstract] [PDF]
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R. M. Becker, L. Sandor, M. Tindel, and R. W. M. Frater Medium-Term Follow-up of the Ionescu-Shiley Heterograft Valve Ann. Thorac. Surg., August 1, 1981; 32(2): 120 - 126. [Abstract] [PDF]
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J. W. K. Louw, R. H. Kinsley, R. A. E. Dion, P. R. Colsen, and R. W. Girdwood Emergency Heart Valve Replacement: An Analysis of 170 Patients Ann. Thorac. Surg., May 1, 1980; 29(5): 415 - 422. [Abstract] [PDF]
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J. Deslauriers, M. Beaulieu, A. Benazera, and A. McClish Sleeve Pneumonectomy for Bronchogenic Carcinoma Ann. Thorac. Surg., November 1, 1979; 28(5): 465 - 474. [Abstract] [PDF]
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A. J. Larrieu, G. F. O. Tyers, E. H. Williams, M. J. O'Neill, and J. R. Derrick Intrapleural Instillation of Quinacrine for Treatment of Recurrent Spontaneous Pneumothorax Ann. Thorac. Surg., August 1, 1979; 28(2): 146 - 150. [Abstract] [PDF]
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