Airport (n = 87)^**

City (n = 91)

Chi-square Statistic

Turbine (n = 29)

Greenbelt (n = 41)

Chi-Square Statistic

Gender

c²(1) = 0.010

c²(1) = 0.088

Male

28

29

11

17

Female

58

62

18

24

Age (years)

c²(6) = 4.896

c²(6) = 16.376^*

18 - 20

3

2

1

1

21 - 30

7

8

0

2

31 - 40

16

18

4

7

41 - 50

16

19

9

8

51 - 60

14

20

3

15

61 - 70

16

16

6

7

70 and above

14

8

6

0

Education

c²(2) = 10.602^*

c²(2) = 3.307

Secondary

29

18

10

16

Polytechnic

20

16

5

12

University

32

57

13

13

Illness

c²(1) = 0.277

c²(1) = 0.226

Yes

36

35

7

12

No

49

56

22

29

NS⁺

c²(2) = 0.981

c²(1) = 2.629

Not

40

38

11

16

Moderate

33

41

17

19

Very

14

12

1

6