Table I.

General information regarding the three groups.

Variable	Metastasis (n=30)	Non-metastasis (n=33)	Control (n=44)
Age range, years	34–66	33–67	33–68
Mean age, years	50.2±5.6	50.7±5.2	50.5±5.8
Sex
Male	16	16	21
Female	14	17	23
Habits
Smoking	14 (46.7%)	14 (42.4%)	20 (45.5%)
Drinking	16 (53.3%)	17 (51.5%)	22 (50.0%)