From: Parents’ and peers’ normative influence on adolescents’ smoking: results from a Swiss-Italian sample of middle schools students
N (5657)
%
Gender
Male
2820
49.9
Female
2768
49.0
Nationality
Swiss
4177
73.9
Italian
506
9.0
Others
708
12.5
Grade
First (11 years)
1381
24.4
Second (12 years)
1370
24.3
Third (13 years)
1392
24.6
Fourth (14 years)
1501
26.6