Knowledge

(N = 179)

Lack of knowledge

(N = 71)

p value

N

%

n

%

Student

Laborers

Artisan

Civil servant

Merchant

Retiree

Jobless

35

29

28

19

24

1

43

19.55

16.20

15.64

10.65

13.41

0.56

24.02

16

11

11

3

8

1

21

22.54

15.49

15.49

4.23

11.27

1.41

29.58

0.6441^a