Table 2.

Patient characteristics and potential prognostic factors for overall survival.

Prognostic factor	Nº of patients	5-year survival rate (%)	χ2	p-value
Gender				0.970
Male	132	82.6	0.001
Female	12	83.3
Age (years)				0.022
< 60	106	86.8	5.245
≥ 60	38	71.1
Treatment				0.987
Open surgery	53	83.0	0.026
Laser microsurgery	46	82.6
Radiotherapy	45	82.2
T-stage				0.005
Tis	6	100	10.717
T1	77	90.9
T2	61	70.5
Pathological grading				<0.001
Well and moderately differentiated	112	89.2	16.806
Poorly differentiated	32	59.4
Tumor in anterior commissure				<0.001
No	115	91.3	35.193
Yes	29	48.3