Table 2.

Hazard ratios (HRs) and confidence intervals (CI) of the variables that have significant impact on progression free survival (PFS) in Cox regression analysis

		95% Cl
Variables	HR	Lower	Upper	P-value
Body weight	0.951	0.915	0.990	0.01
Longest length of initial pulmonary nodules	1.041	1.008	1.075	0.01