Table 2.

Multivariate analysis of overall survival with Cox proportional hazards regression analysis.

Variables	HR (95% CI)	p value
Age	0.940 (0.869–1.016)	0.119
Gender, male	3.920 (0.290–52.896)	0.304
IHC
+1	Reference
+2	2.615 (0.156–43.928)	0.504
+3	1.311 (0.052–33.028)	0.869
Chemotherapy + Racotumomab treatment	0.298 (0.038–2.316)	0.247
Total Racotumomab	0.750 (0.601–0.936)	0.011

IHC: immunohistochemistry; HR: hazard ratio; CI: confidence interval. Bold p value indicates statistically significant association.