Table 3.

Multivariate Model of Cancer-Specific Death for Patients Age ≥ 16 with Low Grade Soft Tissue Sarcoma Resected with Curative Intent

Variable*	Hazard Ratio for Death from Soft Tissue Sarcoma (95% Confidence Interval)
Primary Site
Extremity	1.00 (referent)
Trunk	2.04 (0.94 – 4.44)
Other¶	2.80 (1.36 – 5.76)
Visceral†	4.90 (2.39 – 10.05)
Retroperitoneal	5.46 (3.44 – 8.65)
Primary Tumor Size
≤ 5 cm	1.00 (referent)
> 5 cm ≤ 10 cm	4.62 (2.26 – 9.43)
> 10 cm	5.56 (2.57 – 12.04)
Margin Status
R0	1.00 (referent)
R1	1.38 (0.96 – 2.00)
R2	2.60 (1.72 – 3.95)

^*Variables significant at the 0.10 level on univariate analysis were included in the multivariate model. Gender, depth, age, and histologic subtype were not statistically significant variables on multivariate analysis. Treatment-related variables were not included in the multivariate model since their association with the outcome of interest could not be assumed to be independent.

^¶Includes thoracic, head and neck, and skin.

^†Includes gastrointestinal, gynecologic, and genitourinary.