Research Article
Logic Regression for Provider Effects on Kidney Cancer Treatment Delivery
Table 2
Distribution of surgeon and practice environment characteristics by surgical procedures (1995–2005).
| | | Total | LPN | LRN | OPN | ORN | value | | | | (%) | (%) | (%) | (%) | | | 11,918 | 427 (3.6) | 2082 (17.5) | 1380 (11.6) | 8029 (67.3) |
| | Surgeon age (years) | | | | | | 0.0001 | | 40 | 2553 | 147 (5.8) | 774 (30.3) | 271 (10.6) | 1361 (53.3) | | | 40–49 | 4034 | 170 (4.2) | 728 (18.1) | 440 (10.9) | 2696 (66.8) | | | 50–59 | 3710 | 85 (2.3) | 427 (11.5) | 458 (12.4) | 2740 (73.9) | | | | 1621 | 25 (1.5) | 153 (9.4) | 211 (13.0) | 1232 (76.0) | | | Surgeon gender | | | | | | 0.0001 | | Male | 11684 | 419 (3.6) | 2036 (17.4) | 1364 (11.7) | 7865 (67.3) | | | Female | 234 | 8 (3.4) | 46 (19.7) | 16 (6.8) | 164 (70.1) | | | Annual nephrectomy volume | | | | | | 0.0001 | | Bottom 25% | 2279 | 34 (1.5) | 209 (9.2) | 230 (10.1) | 1806 (79.3) | | | 2nd 25% | 3474 | 77 (2.2) | 458 (13.2) | 370 (10.7) | 2569 (73.9) | | | 3rd 25% | 3141 | 107 (3.4) | 519 (16.5) | 320 (10.2) | 2195 (69.9) | | | Top 25% | 3024 | 209 (6.9) | 896 (29.6) | 460 (15.2) | 1459 (48.3) | | | Year of medical school graduation | | | | | | 0.0001 | | 1960 | 346 | 2 (0.6) | 9 (2.6) | 48 (13.9) | 287 (82.9) | | | 1961–1970 | 2488 | 25 (1.0) | 176 (7.1) | 301 (12.1) | 1986 (79.8) | | | 1971–1980 | 3568 | 89 (2.5) | 437 (12.3) | 403 (11.3) | 2639 (73.9) | | | 1981–1990 | 3705 | 166 (4.5) | 738 (19.9) | 431 (11.6) | 2370 (63.9) | | | 1991 | 1811 | 145 (8.0) | 722 (39.9) | 197 (10.9) | 747 (41.3) | | | Practice size | | | | | | 0.0001 | | Solo or two-person | 3200 | 36 (1.1) | 284 (8.9) | 279 (8.7) | 2601 (81.3) | | | Group practice | 6619 | 274 (4.1) | 1368 (20.7) | 709 (10.7) | 4268 (64.5) | | | HMO or hospital-based | 631 | 29 (4.6) | 100 (15.9) | 141 (22.4) | 361 (57.2) | | | Medical school | 484 | 34 (7.0) | 98 (20.3) | 125 (25.8) | 227 (46.9) | | | Other/unclassified | 984 | 54 (5.5) | 232 (23.6) | 126 (12.8) | 572 (58.1) | | | Academic affiliation | | | | | | 0.0001 | | None | 4195 | 88 (2.1) | 660 (15.7) | 385 (9.2) | 3062 (72.9) | | | Minor | 4408 | 127 (2.9) | 740 (16.8) | 420 (9.5) | 3121 (70.8) | | | Major | 3201 | 207 (6.5) | 668 (20.9) | 561 (17.5) | 1765 (55.1) | | | Rural/urban status | | | | | | 0.0001 | | Urban | 11093 | 412 (3.7) | 1992 (17.9) | 1318 (11.9) | 7371 (66.5) | | | Rural | 823 | 15 (1.8) | 89 (10.8) | 61 (7.4) | 658 (79.9) | | | Cancer Center Affiliation | | | | | | 0.0001 | | No | 10793 | 322 (2.9) | 1861 (17.2) | 1125 (10.4) | 7485 (69.4) | | | Yes | 1096 | 102 (9.3) | 219 (19.9) | 252 (22.9) | 523 (47.7) | |
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