Group I N* = 24

Mean Follow Up

Group II

N* = 22

Mean Follow Up

Min

max

Mean ± SD

Min

max

Mean ± SD

F-up at 6 ms

35

70

53.3 ± SD 9.3

22

65

95 ± SD 7.4

F-up at 12 ms

55

90

71.4 ± SD 10.1

22

75

100 ± SD 7.2

F-up at 24 ms

60

100

82.9 ± SD 10.5

22

75

100 ± SD 8.2