Supplemental digital content for Yeo H, Kaushal R, Kern L. The adoption of surgical innovations at academic versus nonacademic health centers. Acad Med.
Copyright © by the Association of American Medical Colleges. Unauthorized reproduction is prohibited. 1
Supplemental Digital Appendix 1
Procedure and Diagnosis Codes from the International Classification of Diseases, 9th Revision (ICD-9), Used in a Study of the Adoption of Surgical Innovations at Academic Health Centers, 2009-2011
Procedures and diagnoses Codes
Abdominal aortic aneurysm procedure codes Open repair aortic repair 38.34, 38.64, 38.44 Endovascular repair 38.71, 33.78
Abdominal aortic aneurysm diagnosis codes Ruptured aortic aneurysm 441.3
Colectomy codes Open colectomy 44.72-44.76
Laparoscopic colectomy 17.32-17.36 Colon cancer diagnosis codes 153.X
Lobectomy codes Open lobectomy 32.49
Video-assisted thoracoscopic (VATS) lobectomy 32.41
Lung cancer diagnosis codes 162.3, 162.4, 162.5, 162.8, 162.9 Prostatectomy codes Open prostatectomy 60.3-60.5
Minimally invasive surgical (MIS) prostatectomy 17.42
Prostate cancer diagnosis codes 185.X
Supplemental digital content for Yeo H, Kaushal R, Kern L. The adoption of surgical innovations at academic versus nonacademic health centers. Acad Med.
Copyright © by the Association of American Medical Colleges. Unauthorized reproduction is prohibited. 2
Supplemental Digital Appendix 2
New Procedures Performed at Council of Teaching Hospitals (COTH) versus Non- COTH Hospitals, by Procedure and Year, 2009-2011
Abdominal aortic aneurysm repair
COTH
2009 2010 2011
95% Lower CL 0.4286 0.5564 0.543
95% Upper CL 0.5627 0.6859 0.6734
Count 112 142 139
Percent 49.56 62.28 60.96
Non-COTH
95% Lower CL 0.3106 0.3612 0.407
95% Upper CL 0.3895 0.4412 0.4897
Count 204 240 259
Percent 34.93 40.07 44.81
Colectomy
COTH
2009 2010 2011
95% Lower CL 0.4615 0.4886 0.5143
95% Upper CL 0.4951 0.5226 0.5476
Count 1,652 1,714 1,860
Percent 47.83 50.56 53.1
Non-COTH
95% Lower CL 0.3555 0.389 0.4083
95% Upper CL 0.3714 0.4055 0.4251
Count 5,148 5,411 5,589
Percent 36.34 39.72 41.67
Lobectomy
COTH
2009 2010 2011
95% Lower CL 0.4088 0.4629 0.5156
95% Upper CL 0.4479 0.5032 0.5552
Count 1,074 1,167 1,329
Percent 42.82 48.3 53.55
Non-COTH
95% Lower CL 0.272 0.3296 0.3685
95% Upper CL 0.2979 0.3572 0.3971
Count 1,349 1,583 1,731
Percent 28.48 34.33 38.27
Prostatectomy
COTH
2009 2010 2011
95% Lower CL 0.6485 0.6654 0.7283
95% Upper CL 0.6688 0.6854 0.7466
Count 5,612 5,725 6,649
Percent 65.87 67.54 73.75
Non-COTH
95% Lower CL 0.5569 0.6254 0.7048
95% Upper CL 0.5759 0.6442 0.7219
Count 5,967 6,461 7,738
Supplemental digital content for Yeo H, Kaushal R, Kern L. The adoption of surgical innovations at academic versus nonacademic health centers. Acad Med.
Copyright © by the Association of American Medical Colleges. Unauthorized reproduction is prohibited. 3
Percent 56.65 63.49 71.34
All procedures , all years COTH
95% Lower CL 0.6069
95% Upper CL 0.616
Count 27,175
Percent 61.14
Non-COTH
95% Lower CL 0.4682
95% Upper CL 0.4748
Count 41,680
Percent 47.15
Abbreviation: CL indicates confidence limit.
