Table 2.
Characteristics of Patients Undergoing Liver Resection by Readmission Status.
| All patients |
Not readmitted |
readmitted |
||
|---|---|---|---|---|
| Characteristic | N = 8635 | N = 8132 | N = 503 | P-value |
| Age in years, median (IQR) | 64.0 (55.0, 73.0) | 64.0 (55.0, 73.0) | 62.0 (53.0, 72.0) | .020 |
| Sex, N (%) | ||||
| Male | 5929 (68.7) | 5569 (68.5) | 360 (71.6) | .15 |
| Female | 2706 (31.3) | 2563 (31.5) | 143 (28.4) | |
| Race, N(%) | ||||
| White | 5525 (64.0) | 5210 (64.1) | 315 (62.6) | .54 |
| African American | 1159 (13.4) | 1094 (13.5) | 65 (12.9) | |
| Asian/PI | 1099 (12.7) | 1037 (12.8) | 62 (12.3) | |
| Hispanic | 567 (6.6) | 527 (6.5) | 40 (8.0) | |
| Other/unknown | 285 (3.3) | 264 (3.2) | 21 (4.2) | |
| Insurance type, N(%) | ||||
| Private | 3469 (40.2) | 3256 (40.0) | 213 (42.3) | .093 |
| Medicaid | 746 (8.6) | 693 (8.5) | 53 (10.5) | |
| Medicare | 3807 (44.1) | 3600 (44.3) | 207 (41.2) | |
| Not insured | 368 (4.3) | 345 (4.2) | 23 (4.6) | |
| Other/unknown | 245 (2.8) | 238 (2.9) | 7 (1.4) | |
| Income ($USD), N(%) | ||||
| <$38 000 | 1710 (19.8) | 1610 (19.8) | 100 (19.9) | .92 |
| $38 000-$47 999 | 2044 (23.7) | 1931 (23.7) | 113 (22.5) | |
| $48 000-$62 999 | 2323 (26.9) | 2183 (26.8) | 140 (27.8) | |
| >$63k | 2558 (29.6) | 2408 (29.6) | 150 (29.8) | |
| No HS diploma, N(%) | ||||
| 21%+ | 1842 (21.3) | 1741 (21.4) | 101 (20.1) | .19 |
| 13-20.9% | 2330 (27.0) | 2175 (26.7) | 155 (30.8) | |
| 7-12.9% | 2606 (30.2) | 2455 (30.2) | 151 (30.0) | |
| <7% | 1857 (21.5) | 1761 (21.7) | 96 (19.1) | |
| Patient urban/rural location, N(%) | ||||
| Metro areas | 7440 (86.2) | 6999 (86.1) | 441 (87.7) | .57 |
| Metro-adjacent | 755 (8.7) | 717 (8.8) | 38 (7.6) | |
| Not Metro-adjacent | 314 (3.6) | 299 (3.7) | 15 (3.0) | |
| Rural | 126 (1.5) | 117 (1.4) | 9 (1.8) | |
| Miles to hospital, median (IQR) | 14.8 (5.8, 47.3) | 15.0 (5.8, 47.5) | 13.2 (6.2, 41.2) | .19 |
| Tumor size, N(%) | ||||
| <2 cm | 657 (7.6) | 605 (7.4) | 52 (10.3) | .11 |
| 2-5 cm | 2979 (34.5) | 2812 (34.6) | 167 (33.2) | |
| >5 cm | 4655 (53.9) | 4388 (54.0) | 267 (53.1) | |
| Unknown | 344 (4.0) | 327 (4.0) | 17 (3.4) | |
| Postoperative length of stay (days), median (IQR) | 6.0 (4.0, 9.0) | 7.0 (5.0, 11.0) | <.001 | |
| AJCC cancer stage, N(%) | ||||
| Stage I | 3553 (41.1) | 3378 (41.5) | 175 (34.8) | .025 |
| Stage II | 2058 (23.8) | 1922 (23.6) | 136 (27.0) | |
| Stage III | 1819 (21.1) | 1695 (20.8) | 124 (24.7) | |
| Stage IV | 302 (3.5) | 283 (3.5) | 19 (3.8) | |
| Unknown | 903 (10.5) | 854 (10.5) | 49 (9.7) | |
| Charlson-Deyo score, N(%) | ||||
| 0 | 4668 (54.1) | 4434 (54.5) | 234 (46.5) | .002 |
| 1 | 2522 (29.2) | 2352 (28.9) | 170 (33.8) | |
| 2 | 1445 (16.7) | 1346 (16.6) | 99 (19.7) | |
| Hospital type, N(%) | ||||
| Community | 2854 (33.1) | 2710 (32.3) | 144 (28.6) | .087 |
| Academic | 5781 (66.9) | 5422 (67.7) | 359 (71.4) | |
| Facility location, N(%) | ||||
| New England | 408 (4.7) | 384 (4.7) | 24 (4.8) | <.001 |
| Middle Atlantic | 1509 (17.5) | 1380 (17.0) | 129 (25.6) | |
| South Atlantic | 1671 (19.4) | 1569 (19.3) | 102 (20.3) | |
| East North Central | 1391 (16.1) | 1330 (16.4) | 61 (12.1) | |
| East South Central | 588 (6.8) | 555 (6.8) | 33 (6.6) | |
| West North Central | 647 (7.5) | 614 (7.6) | 33 (6.6) | |
| West South Central | 861 (10.0) | 808 (9.9) | 53 (10.5) | |
| Mountain | 330 (3.8) | 303 (3.7) | 27 (5.4) | |
| Pacific | 1230 (14.2) | 1189 (14.6) | 41 (8.2) | |
| Nodes resected, N(%) | 1585 (18.4) | 6657 (81.9) | 393 (78.1) | .036 |
| Care transitions, N(%) | ||||
| Yes | 5204 (60.3) | 4885 (60.1) | 319 (63.4) | .14 |
| No | 3431 (39.7) | 3247 (39.9) | 184 (36.6) | |
| Surgery type | ||||
| Wedge/segmental | 4630 (53.6) | 4379 (53.8) | 251 (49.9) | .36 |
| Lobectomy | 2470 (28.6) | 2318 (28.5) | 152 (30.2) | |
| Extended lobectomy | 613 (7.1) | 572 (7.0) | 41 (8.2) | |
| Unknown | 922 (10.7) | 863 (10.6) | 59 (11.7) |
Abbreviations: AJCC, American Joint Committee on Cancer.