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Table 2 Percentages of participants reporting high alcohol consumption, everyday smoking, and use of any illicit drug at least once, divided by school year and sex, with χ 2 and p -values for sex differences

From: Social capital in relation to alcohol consumption, smoking, and illicit drug use among adolescents: a cross-sectional study in Sweden

 

7th grade

  

9th grade

  

2nd grade (secondary school)

 

Boys % ( n)

Girls % ( n)

χ2( p)

Boys % ( n)

Girls % ( n)

χ2( p)

Boys % ( n)

Girls % ( n)

χ2( p)

High alcohol consumption

3.7 (48)

8.1 (109)

22.62***

24.0 (298)

25.9 (333)

1.30 ns

51.5 (620)

47.5 (553)

3.76 ns

Everyday smoking

2.1 (28)

3.1 (43)

2.54 ns

8.0 (100)

9.6 (124)

2.07 ns

9.1 (110)

15.4 (181)

22.33***

Used any illicit drug at least once

4.5 (58)

4.7 (63)

0.021 ns

12.3 (153)

8.7 (112)

8.61**

22.7 (271)

17.4 (201)

10.25***

  1. * p < = 0.05, ** p < = 0.01, *** p < = 0.001.