Table 2 Unadjusted characteristics of patients who underwent surgical treatment of retroperitoneal sarcomas at local, low-volume centers (ST/LV) and patients traveling long distance to high-volume centers (LT/HV)
LT/HV (N = 1250) | ST/LV (N = 1309) | p value | |
|---|---|---|---|
Patient age (years, median, IQR) | 59 (50–69) | 64 (52–75) | < 0.0001 |
Gender | 0.011 | ||
Female | 681 (54.5%) | 647 (49.4%) | |
Male | 569 (45.5%) | 662 (50.6%) | |
Race | 0.009 | ||
Black | 92 (7.4%) | 141 (10.8%) | |
Other | 64 (5.1%) | 58 (4.4%) | |
White | 1094 (87.5%) | 1110 (84.8%) | |
Income | 0.071 | ||
Below median | 375 (30%) | 358 (27.4%) | |
Above median | 832 (66.6%) | 931 (71.1%) | |
Insurance status | 0.393 | ||
None | 28 (2.2%) | 41 (3.1%) | |
Private/government | 1057 (84.6%) | 1243 (95%) | |
Annual hospital volume (cases, median, IQR) | 10 (7–14) | 1 (1–2) | < 0.0001 |
Travel distance (miles, median, IQR) | 56 (19–132) | 4 (2–11) | < 0.0001 |
Charlson-Deyo score | 0.017 | ||
0 | 940 (75.2%) | 535 (40.9%) | |
1 | 192 (15.4%) | 127 (9.7%) | |
≥ 2 | 39 (3.1%) | 38 (2.9%) | |
Tumor grade | 0.024 | ||
1 | 368 (29.4%) | 374 (28.6%) | |
2 | 146 (11.7%) | 172 (13.1%) | |
3 | 570 (45.6%) | 487 (37.2%) | |
Neoadjuvant therapy | 61 (4.9%) | 12 (0.9%) | < 0.0001 |
Extent of surgery | < 0.0001 | ||
Local | 193 (15.4%) | 564 (43.1%) | |
Radical | 639 (51.1%) | 372 (28.4%) | |
Simple | 418 (33.4%) | 373 (28.5%) | |
Appropriateness of resection | 0.003 | ||
R2 | 32 (2.6%) | 57 (4.4%) | |
R0/1 | 894 (71.5%) | 828 (63.3%) | |
Hospital length of stay (days, median, IQR) | 6 (4–9) | 5 (1–7) | < 0.0001 |
Radiotherapy | 362 (29%) | 327 (25) | 0.044 |
30-day mortality | 15 (1.2%) | 36 (2.8%) | 0.0026 |
30-day readmission | 56 (4.5%) | 39 (3.0%) | 0.38 |