Computational and Mathematical Methods in Medicine / 2014 / Article / Tab 2

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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