Overall

Interview

Electronic questionnaire

N

%

N

%

N

%

Age, in years

<20

76

18.9

12

14.6

64

19.9

20 - 29

130

32.3

32

39.0

98

30.5

30 - 39

75

18.6

18

22.0

57

17.8

40 - 49

78

19.4

12

14.6

66

20.6

>49

44

10.9

8

9.8

36

11.2

Education level

Primary

42

10.4

5

6.1

37

11.5

Secondary

118

29.3

32

39.0

86

26.8

Tertiary

182

45.2

2

2.4

50

15.6

Vocational

52

12.9

43

52.4

139

43.3

Other

9

2.2

0

0

9

2.8

Gender

Male

108

26.8

37

45.1

71

22.1

Female

295

73.2

45

54.9

250

77.9

Smoking Status

Smoker

98

24.5

10

24.4

88

22.0

Non-smoker

212

53.0

52

63.4

160

50.3

Former smoker

90

22.5

20

12.2

70

27.7