Table 1.

Frequency distribution of primary and non-primary tumors with respect to all studied variables

	History		Total	Chi-squared (p-value)
	Primary	Non-primary
Gender (male/female)	118/26	42/6	160/32	0.371
No. of tumors (single/multiple)	63/81	24/24	87/105	0.451
Size of tumor (> 3 cm/< 3 cm)	113/31	32/16	145/47	0.099
Stage (Ta/T1)	32/112	15/33	47/145	0.208
Concomitant Tis (no/yes)	97/47	32/16	129/63	0.929