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Table 4 Multivariate analysis of the factors associated with recurrence-free survival from pulmonary metastasectomy

From: The prognostic importance of the number of metastases in pulmonary metastasectomy of colorectal cancer

Variables

Hazard ratio

95 % confidence interval

p value

Disease-free interval, months

   

 ≤36 vs. >36

1.51

1.14 ~ 2.04

0.004

Surgical approach

   

 Open surgery vs. VATS

1.22

0.95 ~ 1.57

0.115

Multiplicity

   

 4+ vs. single

2.17

1.29 ~ 3.52

0.004

 4+ vs. 2–3

1.43

0.90 ~ 2.22

0.123

 2–3 vs. single

1.51

1.10 ~ 2.05

0.012

Bilaterality

   

 Yes vs. no

1.00

0.67 ~ 1.49

0.990

  1. Variables with p values <0.10 were included in the multivariate analysis. Disease-free interval is a continuous variable that was represented in groups for the Kaplan–Meier analysis. The Cox regression model was applied to identify risk factors for mortality and recurrence estimating the corresponding hazard ratios