Table 2.
Characteristics stratified by hospital volume quartiles
| Characteristics | Low | Medium Low | Medium High | High | P-value | ||||
|---|---|---|---|---|---|---|---|---|---|
| N | % | N | % | N | % | N | % | ||
| Number of patients | 1,058 | (30.5) | 519 | (15.0) | 1,012 | (29.2) | 880 | (25.4) | |
| Number of hospitals | |||||||||
| Age of diagnosis | 0.47 | ||||||||
| <40 | 323 | (30.5) | 174 | (33.5) | 342 | (33.8) | 303 | (34.4) | |
| 40–49 | 349 | (33.0) | 153 | (29.5) | 311 | (30.7) | 296 | (33.6) | |
| 50–59 | 214 | (20.2) | 106 | (20.4) | 209 | (20.7) | 164 | (18.6) | |
| 60–69 | 199 | (11.2) | 66 | (12.7) | 111 | (11.0) | 76 | (8.6) | |
| 70–79 | 41 | (3.9) | 15 | (2.9) | 29 | (2.9) | 33 | (3.8) | |
| >/=80 | 12 | (1.1) | * | * | 10 | (1.0) | * | * | |
| Race | 0.01 | ||||||||
| White | 723 | (68.3) | 351 | (67.6) | 642 | (63.4) | 602 | (68.4) | |
| Black | 112 | (10.6) | 59 | (11.4) | 113 | (11.2) | 100 | (11.4) | |
| Hispanic | 149 | (14.1) | 70 | (13.5) | 176 | (17.4) | 123 | (14.0) | |
| Other | 54 | (5.1) | 36 | (6.9) | 75 | (7.4) | 50 | (5.7) | |
| Unknown | 20 | (1.9) | * | * | * | * | * | * | |
| Year of diagnosis | 0.001 | ||||||||
| 2011 | 353 | (33.4) | 182 | (35.1) | 332 | (32.8) | 293 | (33.3) | |
| 2012 | 366 | (34.6) | 186 | (35.8) | 295 | (29.2) | 320 | (36.4) | |
| 2013 | 339 | (32.0) | 151 | (29.1) | 385 | (38.0) | 267 | (30.3) | |
| Insurance | 0.03 | ||||||||
| Uninsured | 59 | (5.6) | 36 | (6.9) | 86 | (8.5) | 86 | (9.8) | |
| Private | 611 | (57.8) | 303 | (58.4) | 566 | (55.9) | 509 | (57.8) | |
| Medicaid | 225 | (21.3) | 111 | (21.4) | 199 | (19.7) | 155 | (17.6) | |
| Medicare | 124 | (11.7) | 55 | (10.6) | 126 | (12.5) | 90 | (10.2) | |
| Other government/unknown | 39 | (3.7) | 14 | (2.7) | 35 | (3.5) | 40 | (4.5) | |
| Median household income | 0.02 | ||||||||
| <$38,000 | 176 | (16.6) | 88 | (17.0) | 220 | (21.7) | 177 | (20.1) | |
| $38,000-$47,999 | 258 | (24.4) | 114 | (22.0) | 268 | (26.5) | 213 | (24.2) | |
| $48,000-$62,999 | 308 | (29.1) | 150 | (28.9) | 245 | (24.2) | 243 | (27.6) | |
| $63,000+ | 315 | (29.8) | 164 | (31.6) | 278 | (27.5) | 244 | (27.7) | |
| Unknown | * | * | * | * | * | * | * | * | |
| Patient’s Residence Area | <0.001 | ||||||||
| Metropolitan | 899 | (85.0) | 432 | (83.2) | 836 | (82.6) | 694 | (78.9) | |
| Urban | 121 | (11.4) | 61 | (11.8) | 135 | (13.3) | 141 | (16.0) | |
| Rural | 17 | (1.6) | 16 | (3.1) | 14 | (1.4) | * | * | |
| Unknown | 21 | (2.0) | 10 | (1.9) | 27 | (2.7) | 37 | (4.2) | |
| Comorbidity score | 0.65 | ||||||||
| 0 | 910 | (86.0) | 445 | (85.7) | 891 | (88.0) | 766 | (87.0) | |
| 1 | 120 | (11.3) | 62 | (11.9) | 105 | (10.4) | 93 | (10.6) | |
| >/= 2 | 28 | (2.6) | 12 | (2.3) | 16 | (1.6) | 21 | (2.4) | |
| Facility type | <0.001 | ||||||||
| Community cancer | 78 | (7.4) | 17 | (3.3) | 14 | (1.4) | * | * | |
| Comprehensive community Ca | 488 | (46.1) | 192 | (37.0) | 341 | (33.7) | 193 | (21.9) | |
| Academic/Research | 356 | (33.6) | 211 | (40.7) | 513 | (50.7) | 626 | (71.1) | |
| Integrated network cancer | 136 | (12.9) | 99 | (19.1) | 144 | (14.2) | 61 | (6.9) | |
| Facility location | <0.001 | ||||||||
| Northeast | 200 | (18.9) | 114 | (22.0) | 161 | (15.9) | 108 | (12.3) | |
| Midwest | 289 | (27.3) | 102 | (19.7) | 196 | (19.4) | 221 | (25.1) | |
| South | 356 | (33.6) | 183 | (35.3) | 440 | (43.5) | 396 | (45.0) | |
| West | 213 | (20.1) | 120 | (23.1) | 215 | (21.2) | 155 | (17.6) | |
| Stage | <0.001 | ||||||||
| 1A2 | 190 | (18.0) | 78 | (15.0) | 102 | (10.1) | 106 | (12.0) | |
| 1B1 | 868 | (82.0) | 441 | (85.0) | 910 | (89.9) | 774 | (88.0) | |
| Histology | 0.66 | ||||||||
| Squamous cell | 634 | (59.9) | 312 | (60.1) | 595 | (58.8) | 502 | (57.0) | |
| Adenocarcinoma | 376 | (35.5) | 176 | (33.9) | 360 | (35.6) | 325 | (36.9) | |
| Adenosquamous | 48 | (4.5) | 31 | (6.0) | 57 | (5.6) | 53 | (6.0) | |
| Grade | 0.002 | ||||||||
| Well | 203 | (19.2) | 103 | (19.8) | 153 | (15.1) | 129 | (14.7) | |
| Moderate | 482 | (45.6) | 228 | (43.9) | 437 | (43.2) | 436 | (49.5) | |
| Poorly | 279 | (26.4) | 142 | (27.4) | 324 | (32.0) | 221 | (25.1) | |
| Unknown | 94 | (8.9) | 46 | (8.9) | 98 | (9.7) | 94 | (10.7) | |
| Hysterectomy type | <0.001 | ||||||||
| Simple | 427 | (40.4) | 178 | (34.3) | 347 | (34.3) | 274 | (31.1) | |
| Radical | 631 | (59.6) | 341 | (65.7) | 665 | (65.7) | 606 | (68.9) | |
| Route of surgery | 0.35 | ||||||||
| Open | 429 | (40.5) | 217 | (41.8) | 432 | (42.7) | 392 | (44.5) | |
| Minimally invasive | 629 | (59.5) | 302 | (58.2) | 580 | (57.3) | 488 | (55.5) | |
| Lymphadenectomy | <0.001 | ||||||||
| No | 134 | (12.7) | 39 | (7.5) | 62 | (6.1) | 34 | (3.9) | |
| Yes | 924 | (87.3) | 480 | (92.5) | 950 | (93.9) | 846 | (96.1) | |
*
Fewer than 10 patients