Table 1.

Comparison of the general data between the two groups (x̅±s; n, %)

group	Number of cases	Sex		Years (years)	Disease duration (months)	Site of onset
		male	female			left	right
Endoscopic group	45	20 (44.44)	25 (55.56)	48.96±6.46	6.51±1.81	25 (55.56)	20 (44.44)
Microscopy group	42	20 (47.62)	22 (52.38)	49.56±6.22	6.44±1.67	24 (57.14)	18 (42.86)
t/χ2 value		0.088		0.441	0.187	0.022
P value		0.767		0.661	0.852	0.881