Ages (Year):

Numbers (n)

Percentage (%)

<20 years old

20 to 29 years old

30 to 39 years old

40 to 49 years old

50 to 59 years old

60 to 69 years old

70 and more

7

45

45

28

20

11

6

4.3

27.8

27.8

17.3

12.3

6.8

3.7

Social economic level

Weak

Middle

High

Total

117

33

12

162

72.22

20.38

7.4

100