low group ≤ 16

high group ≥ 16

χ²-value

p-value

n = 27

%

n = 49

%

Age (years)

30 - 39

5

19

22

45

6.747

0.150

40 - 49

4

15

6

12

50 - 59

7

26

10

20

60 - 69

9

33

7

14

70 or older

2

7

4

8

Occupation

Office workers

8

30

14

29

6.822

0.078

Medical workers

0

0

10

20

Homemakers

14

52

17

35

Others

5

19

8

16

Marital status

Yes

6

22

15

31

0.613

0.433

No

21

78

34

69

Presence of children

Yes

21

78

22

45

7.660

0.006

No

6

22

27

55