Table 1.

Statistical analysis of factors predicting survival after hepatic and pulmonary metastasectomy

Factors predicting survival	P-value
Age	0.711
Gender	0.600
Duke's stage of primary colorectal cancer	0.438
Number of liver metastases	0.120
Number of lung metastases	0.530
Interval between primary and liver surgery	0.740
Synchronous vs. metachronous liver/lung metastases	0.020a

^aStatistically significant.