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Table 1 Sample

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