Physician social networks and variation in prostate cancer treatment in three cities

Health Services Research

Volumn 47, Issue 1 PART 2, 2012, Pages 380-403

  Pollack, Craig Evan ^a,b   Weissman, Gary ^c   Bekelman, Justin ^d   Liao, Kaijun ^d   Armstrong, Katrina ^d  

^a JOHNS HOPKINS UNIVERSITY SCHOOL OF MEDICINE   (United States)

^b JOHNS HOPKINS BLOOMBERG SCHOOL OF PUBLIC HEALTH   (United States)

^c HOSPITAL OF THE UNIVERSITY OF PENNSYLVANIA   (United States)

^d UNIVERSITY OF PENNSYLVANIA   (United States)

Author keywords

network analysis; Physician networks; physician referral; prostate cancer

Indexed keywords

AGED; ARTICLE; CANCER LOCALIZATION; CONTROLLED STUDY; ETHNICITY; HUMAN; INCOME; MAJOR CLINICAL STUDY; MALE; MARRIAGE; MEDICARE; PATIENT CARE; PROSTATE CANCER; PROSTATECTOMY; SOCIAL NETWORK; SOCIAL STATUS; UROLOGIST;

AGED; AGED, 80 AND OVER; HUMANS; INSURANCE CLAIM REVIEW; MALE; MEDICARE; PHYSICIAN'S PRACTICE PATTERNS; PROSTATECTOMY; PROSTATIC NEOPLASMS; RETROSPECTIVE STUDIES; SEER PROGRAM; SOCIAL NETWORKING; SOCIOECONOMIC FACTORS; UNITED STATES; UROLOGY;

EID: 84855846283     PISSN: 00179124     EISSN: 14756773     Source Type: Journal    
DOI: 10.1111/j.1475-6773.2011.01331.x     Document Type: Article

References (66)

1. Bach, P. B., H. H. Pham, D. Schrag, R. C. Tate, and, J. L. Hargraves,. 2004. " Primary Care Physicians Who Treat Blacks and Whites." New England Journal of Medicine 351 (6): 575-84. (Pubitemid 39028925)
2. Barabasi, A.-L., and, R. Albert,. 1999. " Emergence of Scaling in Random Networks." Science 286 (5439): 509-12.
3. Barnato, A. E., F. L. Lucas, D. Staiger, D. E. Wennberg, and, A. Chandra,. 2005. " Hospital-Level Racial Disparities in Acute Myocardial Infarction Treatment and Outcomes." Medical Care 43 (4): 308-19. (Pubitemid 40515620)
4. Barnett, M. L., B. E. Landon, A. J. O'Malley, N. L. Keating, and, N. A. Christakis,. 2011. " Predicting Informal Physician Relationships with Administrative Data." Health Services Research 46 (5): 1592-609.
5. Bekelman, J. E., M. J. Zelefsky, T. L. Jang, E. M. Basch, and, D. Schrag,. 2007. " Variation in Adherence to External Beam Radiotherapy Quality Measures among Elderly men with Localized Prostate Cancer." International Journal of Radiation Oncology, Biology, Physics 69 (5): 1456-66. (Pubitemid 350116406)
6. Bodenheimer, T., and, H. H. Pham,. 2010. " Primary Care: Current Problems and Proposed Solutions." Health Affairs 29 (5): 799-805.
7. The Center for Evaluative Clinical Sciences. 1996. The Dartmouth Atlas of Health Care. Lebanon, NH: Dartmouth Medical School.
8. The Center for Evaluative Clinical Sciences. 1998. The Dartmouth Atlas of Health Care 1998. Lebanon, NH: Dartmouth Medical School.
9. Christakis, N. A., and, J. H. Fowler,. 2007. " The Spread of Obesity in a Large Social Network Over 32 Years." New England Journal of Medicine 357 (4): 370-9. (Pubitemid 47124137)
10. Christakis, N. A., and, J. H. Fowler,. 2008. " The Collective Dynamics of Smoking in a Large Social Network." New England Journal of Medicine 358 (21): 2249-58. (Pubitemid 351724454)
11. Coleman, J., E. Katz, and, H. Menzel,. 1957. " The Diffusion of an Innovation among Physicians." Sociometry 20 (4): 253-70.
12. Coleman, J. S., E. Katz, and, H. Menzel,. 1966. Medical Innovation: A Diffusion Study. New York: Bobbs Merrill.
13. Cooperberg, M. R., J. M. Broering, and, P. R. Carroll,. 2010. " Time Trends and Local Variation in Primary Treatment of Localized Prostate Cancer." Journal of Clinical Oncology 28 (7): 1117-23.
14. Csardi, G., and, T. Nepusz,. 2006. The Igraph Software Package for Complex Network Research. Paper presented at the International Conference on Complex Systems, Boston, MA.
15. Dartmouth Atlas Project, Center for the Evaluative Clinical Sciences. 2007. " Preference-Sensitive Care. A Dartmouth Atlas Project Topic Brief " [accessed on April 20, 2009]. Available at.
16. Elixhauser, A., C. Steiner, D. Harris, and, R. Coffey,. 1998. " Comorbidity Measures for Use with Administrative Data." Medical Care 36 (1): 8-27. (Pubitemid 128456396)
17. Epstein, A. M., 2010. " Geographic Variation in Medicare Spending." New England Journal of Medicine 363 (1): 85-6.
18. Fisher, E. S., M. B. McClellan, J. Bertko, S. M. Lieberman, J. J. Lee, J. L. Lewis, and, J. S. Skinner,. 2009. " Fostering Accountable Health Care: Moving Forward in Medicare." Health Affairs 28 (2): w219-31.
19. Fisher, E., D. Staiger, J. Bynum, and, D. Gottlieb,. 2007. " Creating Accountable Care Organizations: The Extended Hospital Medical Staff." Health Affairs 26: w44-57.
20. Forrest, C. B., P. A. Nutting, S. von Schrader, C. Rohde, and, B. Starfield,. 2006. " Primary Care Physician Specialty Referral Decision Making: Patient, Physician, and Health Care System Determinants." Medical Decision Making 26: 76-85. (Pubitemid 43134130)
21. Fortunato, S., 2010. " Community Detection in Graphs." Physics Reports 486: 75-174.
22. Fowler, J. H., and, N. A. Christakis,. 2008. " Dynamic Spread of Happiness in a Large Social Network: Longitudinal Analysis over 20 Years in the Framingham Heart Study." British Medical Journal 337: a2338.
23. Gawande, A., 2009. The Cost Conundrum. The New Yorker.[accessed September 19, 2011]. Available at: http://www.newyorker.com/reporting/2009/06/01/ 090601fa-fact-gawande.
24. Gilligan, T., 2005. " Social Disparities and Prostate Cancer: Mapping the Gaps in Our Knowledge." Cancer Cause Control 16: 45-53. (Pubitemid 40568850)
25. Girvan, M., and, M. E. J. Newman,. 2002. " Community Structure in Social and Biological Networks." Proceedings of the National Academy of Sciences 99 (12): 7821-6. (Pubitemid 34650963)
26. Groeneveld, P. W., S. B. Laufer, and, A. M. Garber,. 2005. " Technology Diffusion, Hospital Variation, and Racial Disparities among Elderly Medicare Beneficiaries 1989-2000." Medical Care 43 (4): 320-9. (Pubitemid 40515621)
27. Iwashyna, T. J., J. D. Christie, J. Moody, J. M. Kahn, and, D. A. Asch,. 2009. " The Structure of Critical Care Transfer Networks." Medical Care 47: 787-93.
28. Jang, T. L., O. Yossepowitch, F. J. Bianco, and, P. T. Scardino,. 2007. " Low Risk Prostate Cancer in Men under Age 65: The Case for Definitive Treatment 10.1016/j.Urolonc.2007.05.025." Urologic Oncology-Seminars Original Investigations 25 (6): 510-4. (Pubitemid 350151909)
29. Jemal, A., R. Siegel, J. Xu, and, E. Ward,. 2010." Cancer Statistics, 2010." CA: A Cancer Journal for Clinicians 60: 277-300.
30. Jha, A. K., E. J. Orav, Z. Li, and, A. M. Epstein,. 2007. " Concentration and Quality of Hospitals That Care for Elderly Black Patients." Archives of Internal Medicine 167: 1177-82. (Pubitemid 46919821)
31. Keating, N. L., J. Z. Ayanian, P. D. Cleary, and, P. V. Marsden,. 2007. " Factors Affecting Influential Discussions among Physicians: A Social Network Analysis of a Primary Care Practice." Journal of General Internal Medicine 22: 794-8. (Pubitemid 46763984)
32. Kinchen, K. S., L. A. Cooper, D. Levine, N. Y. Wang, and, N. R. Powe,. 2004. " Referral of Patients to Specialists: Factors Affecting Choice of Specialist by Primary Care Physicians." Annals of Family Medicine 2 (3): 245-52. (Pubitemid 39318005)
33. Kossinets, G., 2006. " Effects of Missing Data in Social Networks." Socail Networks 28: 247-68. (Pubitemid 44255045)
34. Krongrad, A., H. Lai, and, S. Lai,. 1997. " Survival after Radical Prostatectomy." Journal of the American Medical Association 278 (1): 44-6. (Pubitemid 27274515)
35. Krupski, T. L., L. Kwan, A. A. Afifi, and, M. S. Litwin,. 2005. " Geographic and Socioeconomic Cariation in the Treatment of Prostate Cancer." Journal of Clinical Oncology 23 (31): 1-8.
36. Kuo, D., D. R. Gifford, and, M. D. Stein,. 1998. " Curbside Consultation Practices and Attitudes among Primary Care Physicians and Medical Subspecialists." Journal of the American Medical Association 280 (10): 905-9. (Pubitemid 28423918)
37. Lai, S., H. Lai, S. Lamm, C. Obek, A. Krongrad, and, B. Roos,. 2001. " Radiation Therapy in Non-Surgically-Treated Nonmetastatic Prostate Cancer: Geographic and Demographic Variation." Urology 57: 510-7. (Pubitemid 32192983)
38. Laumann, E. O., P. V. Marsden, and, D. Prensky,. 1983. " The Boundary Specification Problem in Network Analysis." In Applied Network Analysis, edited by, R. S. Burt, and, M. J. Minor, pp 18-34. London: Sage Publications.
39. Lee, T. H., L. P. Casalino, E. S. Fisher, and, G. R. Wilensky,. 2010. " Creating Accountable Care Organizations." New England Journal of Medicine 363 (15): e23.
40. Liang, K. Y., and, S. L. Zeger,. 1986. " Longitudinal Data Analysis Using Generalised Linear Models." Biometrika 73: 13-22.
41. Lomas, J., M. Enkin, G. M. Anderson, W. J. Hannah, E. Vayda, and, J. Singer,. 1991. " Opinion Leaders vs Audit and Feedback to Implement Practice Guidelines: Delivery after Previous Cesarean Section." Journal of the American Medical Association 265 (17): 2202-7.
42. Lu-Yao, G. L., D. McLerran, J. Wasson, and, J. E. Wennberg,. 1993. " An Assessment of Radical Prostatectomy. Time Trends, Geographic Variation, and Outcomes. The Prostate Patient Outcomes Research Team." Journal of the American Medical Association 269 (20): 2633-6.
43. McDonald, K., V. Sundaram, D. Bravata, R. Lewis, N. Lin, S. A. Kraft, M. McKinnon, H. Paguntalan, and, D. K. Owens,. 2007. Closing the Quality Gap: A Critical Analysis of Quality Improvement Strategies. Volume 7-Care Coordination. Rockville, MD: AHRQ.
44. McNeil, B. J., 2001. " Shattuck Lecture - Hidden Barriers to Improvement in the Quality of Care." New England Journal of Medicine 345 (22): 1612-20. (Pubitemid 33126842)
45. NCCN. 2007. Clinical Practice Guidelines in Oncology Prostate Cancer. Fort Washington, PA: NCCN.
46. Newman, M. E. J., 2006. " Modularity and Community Structure in Networks." Proceedings of the National Academy of Sciences 103 (23): 8577-82. (Pubitemid 43878062)
47. Newman, M. E. J., A.-L. Barabasi, and, D. J. Watts, eds. 2006. The Structure and Dynamics of Networks. Princeton, NJ: Princeton University Press.
48. Pardo, Y., F. Guedea, F. Aguilõ, P. Fernández, V. Macías, A. Mariño, A. Hervás, I. Herruzo, P. Ortiz, J. Ponce de Leõn, J. Craven-Bratle, J. F. Suárez, A. Boladeras, A. Pont, A. Ayala, G. Sancho, E. Martinez, J. Alonso, and, M. Ferrer,. 2010. " Quality-of-Life Impact of Primary Treatments for Localized Prostate Cancer in Patients without Hormonal Treatment." Journal of Clinical Oncology 28 (31): 4687-96.
49. Pham, H. H., D. Schrag, A. S. O'Malley, B. Wu, and, P. B. Bach,. 2007. " Care Patterns in Medicare and Their Implications for Pay for Performance." New England Journal of Medicine 356 (11): 1130-9. (Pubitemid 46425597)
50. Pollack, C. E., and, K. Armstrong,. 2011. " Accountable Care Organizations and Health Care Disparities." Journal of the American Medical Association 305: 1706-7.
51. Pollack, C. E., J. E. Bekelman, K. J. Liao, and, K. Armstrong,. 2011. " Hospital Racial Composition and the Treatment of Localized Prostate Cancer." Cancer doi: 10.1002/cncr.26232. [Epub ahead of print].
52. Potosky, A. L., W. W. Davis, R. M. Hoffman, et al. 2004. " Five-Year Outcomes after Prostatectomy or Radiotherapy for Prostate Cancer: The Prostate Cancer Outcomes Study." Journal of the National Cancer Institute 96 (18): 1358-67. (Pubitemid 39406169)
53. Potosky, A. L., G. F. Riley, J. D. Lubitz, R. M. Mentnech, and, L. G. Kessler,. 1993. " Potential for Cancer Related Health Services Research Using a Linked Medicare-Tumor Registry Database." Medical Care 31 (8): 732-48.
54. Rogers, E. M., 1995. Diffusion of Innovation. New York: The Free Press.
55. Schroeder, F. H., M. Roach, and, P. Scardino,. 2008. " Clinical Decisions: Management of Prostate Cancer." New England Journal of Medicine 359 (24): 2605-9.
56. Silber, J., P. Rosenbaum, M. Trudeau, O. Even-Shoshan, W. Chen, X. Zhang, and, R. E. Mosher,. 2001. " Multivariate Matching and Bias Reduction in the Surgical Outcomes Study." Medical Care 39 (10): 1048-64. (Pubitemid 33691380)
57. Smith, D. B., 1998. " The Racial Segregation of Hospital Care Revisted: Medicare Discharge Patterns and Their Implications." American Journal of Public Health 88: 461-3. (Pubitemid 28154955)
58. Snyder, C. F., K. D. Frick, A. L. Blackford, R. J. Herbert, B. A. Neville, M. A. Carducci, and, C. C. Earle,. 2010. " How Does Initial Treatment Choice Affect Short-Term and Long-Term Costs for Clinically Localized Prostate Cancer? " Cancer 116: 5391-9.
59. Soumerai, S. B., T. J. McLaughlin, J. H. Gurwitz, E. Guadagnoli, P. J. Hauptman, C. Borbas, N. Morris, B. McLaughlin, X. Gao, D. J. Willison, R. Asinger, and, F. Gobel,. 1998. " Effect of Local Medical Opinion Leaders on Quality of Care for Acute Myocardial Infarction: A Randomized Controlled Trial." Journal of the American Medical Association 279 (17): 1358-3.
60. Stanford, J. L., Z. Feng, A. S. Hamilton, F. D. Gilliland, R. A. Stephenson, J. W. Eley, P. C. Albertsen, L. C. Harlan, and, A. L. Potosky,. 2000. " Urinary and Sexual Function after Radical Prostatectomy for Clinically Localized Prostate Cancer: The Prostate Cancer Outcomes Study." Journal of the American Medical Association 283 (3): 354-60. (Pubitemid 30051753)
61. Thompson, I., J. B. Thrasher, G. Aus, A. L. Burnett, E. D. Canby-Hagino, M. S. Cookson, A. V. D'Amico, R. R. Dmochowski, D. T. Eton, J. D. Forman, S. L. Goldenberg, J. Hernandez, C. S. Higano, S. R. Kraus, J. W. Moul, and, C. M. Tangen,. 2007. " Guideline for the Management of Clinically Localized Prostate Cancer: 2007 Update." Journal of Urology 177 (6): 2106-31. (Pubitemid 46726449)
62. Valente, T. W., 1996. " Social Network Thresholds in the Diffusion of Innovations." Social Networks 18: 69-89. (Pubitemid 126171789)
63. Walsh, P. C., T. L. DeWeese, and, M. A. Eisenberger,. 2007. " Localized Prostate Cancer." New England Journal of Medicine 357 (26): 2696-705.
64. Wasserman, S., and, K. Faust,. 1999. Social Network Analysis: Methods and Applications. New York: Cambridge University Press.
65. Wilson, L. S., R. Tesoro, E. P. Elkin, N. Sadetsky, J. M. Broering, D. M. Latini, J. DuChane, R. R. Mody, and, P. R. Carroll,. 2007. " Cumulative Cost Pattern Comparison of Prostate Cancer Treatments." Cancer 109: 518-27. (Pubitemid 46190959)
66. Wong, Y. N., N. Mitra, G. Hudes, R. Localio, J. S. Schwartz, F. Wan, C. Montagnet, and, K. Armstrong,. 2006. " Survival Associated with Treatment vs Observation of Localized Prostate Cancer in Elderly Men." Journal of the American Medical Association 296 (22): 2683-93. (Pubitemid 44917546)