Table 1. Demographic characteristics of patients treated with radical prostatectomy for prostate cancer.
| Pre-propensity score-matched | Post-propensity score-matched | ||||||
|---|---|---|---|---|---|---|---|
| RARP (N=55704) | ORP (N=21350) | p value | RARP (N=20573) | ORP (N=20573) | p value | ||
| Age, year, median (IQR) | 62 (57-67) | 62 (57-67) | 0.0086 | 62 (57-67) | 62 (57-67) | 0.9041 | |
| Year of surgery, n (%) | |||||||
| 2009 | 9608 (17.25) | 5450 (25.53) | <0.0001 | 5089 (24.74) | 5154 (25.05) | 0.2171 | |
| 2010 | 8819 (15.83) | 4410 (20.66) | 4064 (19.75) | 4190 (20.37) | |||
| 2011 | 11338 (20.35) | 4858 (22.75) | 4713 (22.91) | 4683 (22.76) | |||
| 2012 | 8978 (16.12) | 2556 (11.97) | 2510 (12.20) | 2503 (12.17) | |||
| 2013 | 8661 (15.55) | 2192 (10.27) | 2193 (10.66) | 2171 (10.55) | |||
| 2014 | 8300 (14.90) | 1884 (8.82) | 2004 (9.74) | 1872 (9.10) | |||
| Race, n (%) | |||||||
| white | 38261 (68.69) | 14142 (66.24) | <0.0001 | 13699 (66.59) | 13650 (66.35) | 0.6484 | |
| black | 5894 (10.58) | 2665 (12.48) | 2560 (12.44) | 2543 (12.36) | |||
| Hispanic | 3099 (5.56) | 1207 (5.65) | 1098 (5.34) | 1176 (5.72) | |||
| Asian or Pacific Islander | 914 (1.64) | 273 (1.28) | 251 (1.22) | 273 (1.33) | |||
| Native American | 281 (0.50) | 72 (0.34) | 67 (0.33) | 68 (0.33) | |||
| other | 1915 (3.44) | 533 (2.50) | 540 (2.62) | 519 (2.52) | |||
| missing | 5340 (9.59) | 2458 (11.51) | 2358 (11.46) | 2344 (11.39) | |||
| ECI, n (%) | |||||||
| 0 | 19226 (34.51) | 6920 (32.41) | <0.0001 | 6704 (32.59) | 6711 (32.62) | 0.9440 | |
| 1 | 20383 (36.59) | 7584 (35.52) | 7357 (35.76) | 7345 (35.70) | |||
| 2 | 10795 (19.38) | 4391 (20.57) | 4216 (20.49) | 4233 (20.58) | |||
| >3 | 5300 (9.51) | 2455 (11.50) | 2296 (11.16) | 2284 (11.10) | |||
| Insurance status, n (%) | |||||||
| Medicare | 18452 (33.13) | 6923 (32.43) | <0.0001 | 6567 (31.92) | 6643 (32.29) | 0.8146 | |
| Medicaid | 1110 (1.99) | 695 (3.26) | 655 (3.18) | 634 (3.08) | |||
| Private insurance | 34084 (61.19) | 12549 (58.78) | 12219 (59.39) | 12179 (59.20) | |||
| Other | 2058 (3.69) | 1183 (5.54) | 1132 (5.50) | 1117 (5.43) | |||
| Hospital location, n (%) | |||||||
| Rural | 1175 (2.11) | 1881 (8.81) | <0.0001 | 1168 (5.68) | 1179 (5.73) | 0.8151 | |
| Urban | 54529 (97.89) | 19469 (91.19) | 19405 (94.32) | 19394 (94.27) | |||
| Hospital academic status, n (%) | |||||||
| Nonteaching | 15224 (27.33) | 8594 (40.25) | <0.0001 | 7872 (38.26) | 7835 (38.08) | 0.7073 | |
| Teaching | 40480 (72.67) | 12756 (59.75) | 12701 (61.74) | 12738 (61.92) | |||
| Hospital region, n (%) | |||||||
| Northeast | 10554 (18.95) | 4020 (18.83) | <0.0001 | 3930 (19.10) | 3885 (18.88) | 0.7744 | |
| Midwest | 13407 (24.07) | 5337 (25.00) | 5090 (24.74) | 5109 (24.83) | |||
| South | 19380 (34.79) | 7893 (36.97) | 7619 (37.03) | 7572 (36.81) | |||
| West | 12363 (22.19) | 4100 (19.20) | 3934 (19.12) | 4007 (19.48) | |||
| Control/ownership of hospital, n (%) | |||||||
| Government, nonfederal | 5289 (9.49) | 2154 (10.09) | <0.0001 | 2074 (10.08) | 2023 (9.83) | 0.6162 | |
| Private, non-profit | 45613 (81.88) | 16855 (78.95) | 16254 (79.01) | 16331 (79.38) | |||
| Private, invest-own | 4802 (8.62) | 2341 (10.96) | 2245 (10.91) | 2219 (10.79) | |||
| Bed size of hospital, n (%) | |||||||
| Small | 7682 (13.79) | 2266 (10.61) | <0.0001 | 2219 (10.79) | 2232 (10.85) | 0.1593 | |
| Medium | 12244 (21.98) | 4622 (21.65) | 4354 (21.16) | 4522 (21.98) | |||
| Large | 35778 (64.23) | 14462 (67.74) | 14000 (68.05) | 13819 (67.17) | t | ||
RARP=Robot-assisted Radical Prostatectomy; ORP=Open Radical Prostatectomy; IQR=Interquartile Range; ECI=Elixhauser Comorbidity Index.