From: A pilot study with early adolescents: dealing with diet, tobacco and air pollution using practical experiences and biological markers
No.
Percent
Sex
Male
12
24
Female
38
76
Cigarettes per day
≤ 6
32
64
≥ 7
18
30
Why do you keep smoking?
I like it
23
46
Unable to stop
7
14
Better concentration
2
4
I feel more self-confident
3
6
My friends smoke
Other