Table 1.

Biological features of the two groups.

	Non-Intubated Group (n = 55)	Intubated Group (n = 13)	p-Value
Age (range), years	64 (47–74)	66 (51–73)	0.1
Sex (m:f)	30:25	7:6	0.9
Primitive Histology
carcinoma:sarcoma	45:10	13:0	0.09
Previous Adjuvant Chemotherapy
yes:no	37:18	9:4	0.8
Disease-Free Interval
<1 year	28	6	0.7
>3 years	16	3	0.6
Resected metastases (mean)	1.55	1.77	0.8