Demographic Characteristics

Frequency (n)

Percentage (%)

Age at onset

0 - 5 years

58

26.4

6 - 10 years

99

45

11 - 18 years

63

28.6

Mean age of onset ± SD (years)

8.01 ± 3.6

Gender

Male

120

54.5

Female

100

45.5

M:F

1.2:1

Residence

Dhaka

49

22.3

Outside Dhaka

171

77.7