Table 5.

Multivariate analysis of factors associated with progression free survival

Variable	Progression-free survival (HR (95% C.I.), P – value)
Stage
Stage IV vs. stage I	5.20 (0.44–61.89), P = 0.19
Stage III vs. stage I	2.18 (0.22–21.45), P = 0.50
Stage II vs. stage I	1.34 (0.08–22.94), P = 0.84
Debulking
Suboptimal vs. optimal	1.79 (0.57–5.62). P = 0.32
Pre-treatment extracellular nuclear DNA (ng/mL)
High vs. Low	3.11 (1.03–9.45). P = 0.045