Group I

(RTS)

(n = 171)

Group II

(LTS)

(n = 171)

P

No

%

No

%

Endoscopic findings

O.V. grades

Grade I

17

9.9

8

4.7

11.6

0.009*

Grade II

116

67.8

143

83.6

Grade III

33

19.3

17

9.9

Grade IV

5

2.9

3

1.8

O.V. risky signs

No

118

69.0

138

80.7

6.21

0.013*

Yes

53

31.0

33

19.3