Table 2 Univariate logistics and multivariate Cox regression analysis for risk factors of lymph node metastasis
Variables | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
OR (95% CI) | p value | OR (95% CI) | p value | |
Age, years | ||||
< 19 | Reference | Reference | ||
≥ 19 | 0.198 (0.153–0.256) | < 0.001 | 0.927 (0.681–1.263) | 0.633 |
Race | ||||
White | Reference | Reference | ||
Black | 1.793 (1.272–2.529) | 0.001 | 1.293 (0.933–1.791) | 0.123 |
Other | 1.37 (0.885–2.122) | 0.158 | 1.044 (0.687–1.585) | 0.841 |
Sex | ||||
Female | Reference | Reference | ||
Male | 1.289 (1.002–1.659) | 0.048 | 1.291 (1.012–1.646) | 0.040 |
Site | ||||
Head, Face, Neck | Reference | Reference | ||
Upper limb, shoulder | 0.625 (0.453–0.861) | 0.004 | 0.549 (0.345–0.876) | 0.012 |
Lower limb, hip | 0.411 (0.308–0.548) | < 0.001 | 0.394 (0.249–0.626) | < 0.001 |
Grade | ||||
I + II | Reference | Reference | ||
III + IV | 8.708 (4.032–18.806) | < 0.001 | 3.93 (1.805–8.554) | 0.001 |
Unknown | 14.788 (6.901–31.691) | < 0.001 | 5.033 (2.325–10.895) | < 0.001 |
Laterality | ||||
Left | Reference | Reference | ||
Right | 1.235 (0.933–1.634) | 0.14 | 1.196 (0.912–1.57) | 0.196 |
Unknown | 2.018 (1.455–2.798) | < 0.001 | 0.792 (0.494–1.27) | 0.334 |
Histology | ||||
Leiomyosarcoma | Reference | Reference | ||
Rhabdomyosarcoma | 25.435 (15.906–40.673) | < 0.001 | 9.598 (5.719–16.11) | < 0.001 |
Angiosarcoma | 6.621 (3.845–11.401) | < 0.001 | 5.459 (3.163–9.419) | < 0.001 |
Ewing sarcoma | 7.921 (4.365–14.377) | < 0.001 | 4.026 (2.205–7.351) | < 0.001 |
Epithelioid sarcoma | 10.671 (5.917–19.247) | < 0.001 | 7.965 (4.435–14.307) | < 0.001 |
Clear cell sarcoma | 15.14 (8.241–27.817) | < 0.001 | 11.587 (6.397–20.989) | < 0.001 |
Size, cm | ||||
< 4 | Reference | Reference | ||
4–10 | 2.351 (1.732–3.191) | < 0.001 | 2.08 (1.521–2.845) | < 0.001 |
≥ 10 | 3.032 (2.155–4.267) | < 0.001 | 4.676 (3.25–6.728) | < 0.001 |