Table 1.
Demographic and clinical characteristics by lymph node assessment in women with endometrial cancer.
| Sentinel lymph node biopsy | Lymph node dissection | No nodal assessment | P-value | ||||
|---|---|---|---|---|---|---|---|
| N | % | N | % | N | % | ||
| All | 1,366 | (4.8) | 17,669 | (62.3) | 9,327 | (32.9) | |
| Age (years) | <0.001 | ||||||
| <40 | 42 | (5.0) | 432 | (51.8) | 360 | (43.2) | |
| 40–49 | 85 | (3.6) | 1,286 | (54.1) | 1,008 | (42.4) | |
| 50–59 | 352 | (4.6) | 4,617 | (60.7) | 2,634 | (34.6) | |
| 60–69 | 491 | (4.9) | 6,552 | (64.8) | 3,073 | (30.4) | |
| ≥70 | 396 | (5.3) | 4,782 | (64.4) | 2,252 | (30.3) | |
| Year | <0.001 | ||||||
| 2011 | 100 | (1.6) | 4,251 | (66.0) | 2,091 | (32.5) | |
| 2012 | 160 | (2.3) | 4,484 | (63.1) | 2,464 | (34.7) | |
| 2013 | 446 | (6.2) | 4,412 | (61.3) | 2,345 | (32.6) | |
| 2014 | 525 | (8.3) | 3,750 | (59.3) | 2,054 | (32.5) | |
| 2015 | 135 | (10.6) | 772 | (60.3) | 373 | (29.1) | |
| Marital status | <0.001 | ||||||
| Married | 572 | (4.4) | 8,093 | (62.6) | 4,268 | (33.0) | |
| Single | 446 | (3.9) | 7,213 | (62.5) | 3,887 | (33.7) | |
| Other/unknown | 348 | (9.0) | 2,363 | (60.9) | 1,172 | (30.2) | |
| Race | <0.001 | ||||||
| White | 969 | (4.8) | 12,308 | (61.1) | 6,865 | (34.1) | |
| Black | 71 | (2.5) | 1,893 | (66.0) | 906 | (31.6) | |
| Other/unknown | 326 | (6.1) | 3,468 | (64.8) | 1,556 | (29.1) | |
| Insurance status | <0.001 | ||||||
| Commercial | 669 | (5.2) | 7,846 | (61.4) | 4,260 | (33.4) | |
| Medicare | 578 | (4.8) | 7,690 | (63.7) | 3,801 | (31.5) | |
| Medicaid | 72 | (4.3) | 974 | (58.6) | 616 | (37.1) | |
| Uninsured | 22 | (2.1) | 665 | (61.9) | 388 | (36.1) | |
| Unknown | 25 | (3.2) | 494 | (63.3) | 262 | (33.6) | |
| Hospital location | <0.001 | ||||||
| Urban | 1,360 | (5.0) | 16,892 | (62.3) | 8,847 | (32.7) | |
| Rural | 6 | (0.5) | 777 | (61.5) | 480 | (38.0) | |
| Hospital teaching status | <0.001 | ||||||
| Teaching | 958 | (5.7) | 10,678 | (63.5) | 5,175 | (30.8) | |
| Non-teaching | 408 | (3.5) | 6,991 | (60.5) | 4,152 | (35.9) | |
| Hospital bed size | <0.001 | ||||||
| <400 | 614 | (5.4) | 6,723 | (58.8) | 4,106 | (35.9) | |
| 400–600 | 292 | (3.8) | 4,861 | (62.9) | 2,573 | (33.3) | |
| >600 | 460 | (5.0) | 6,085 | (66.2) | 2,648 | (28.8) | |
| Hospital region | <0.001 | ||||||
| Northeastern | 102 | (1.9) | 3,384 | (62.9) | 1,893 | (35.2) | |
| Midwest | 241 | (5.4) | 2,685 | (59.7) | 1,573 | (35.0) | |
| South | 601 | (4.4) | 8,861 | (64.5) | 4,285 | (31.2) | |
| West | 422 | (8.9) | 2,739 | (57.8) | 1,576 | (33.3) | |
| Comorbidity (Elixhauser index) | <0.001 | ||||||
| 0 | 216 | (8.8) | 1,463 | (59.4) | 786 | (31.9) | |
| 1 | 261 | (4.9) | 3,436 | (64.2) | 1,653 | (30.9) | |
| ≥2 | 889 | (4.3) | 12,770 | (62.2) | 6,888 | (33.5) | |
| Route of Hysterectomy | <0.001 | ||||||
| Abdominal | 119 | (1.3) | 5,960 | (62.9) | 3,401 | (35.9) | |
| Laparoscopic | 132 | (3.4) | 2,014 | (51.4) | 1,769 | (45.2) | |
| Robotic | 1,115 | (7.5) | 9,695 | (64.8) | 4,157 | (27.8) | |
| Annualized hospital volume median (IQR) | 125 | (44–211) | 60 | (36–89) | 49 | (21–76) | <0.001 |
IQR: interquartile range, P values calculated using χ2 tests.