Age of men at the first consumption of cannabis (years)

Quantity

Relative frequencies (%)

Accumulated frequencies (%)

Unknown

19

44.2

44.2

13

2

4.7

48.8

14

2

4.7

53.5

15

3

7

60.5

16

2

4.7

65.1

17

2

4.7

69.8

18

7

16.3

86

19

5

11.6

97.7

20

1

2.3

100

Total

43

100