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Table 1 Prevalence of risk behaviours by gender at age 14 and age 16

From: The correlates and course of multiple health risk behaviour in adolescence

  Age 14 Age 16
  Male Female Male Female
N = 7,939 N = 7,649 N = 6.286 N = 6,130
% (95 % CI) % (95 % CI) % (95 % CI) % (95 % CI)
Regular smoking 4.5 (3.8, 5.2) 7.3 (6.5, 8.1) 15.1 (14.0, 16.4) 19.4 (18.0, 20.9)
Regular alcohol use 8.2 (7.4, 9.1) 7.4 (6.6, 8.3) 21.4 (20.0, 22.8) 17.8 (16.5, 19.1)
Ever tried cannabis 10.4 (9.5, 11.4) 8.9 (8.1, 9.8) 29.6 (28.2, 31.2) 26.5 (25.1, 28.0)
Delinquency 34.2 (32.7, 35.7) 23.2 (21.9, 24.5) 27.3 (25.8, 28.8) 16.4 (15.3, 17.6)
Drinking and Smoking 1.6 (1.3, 2.0) 2.0 (1.6, 2.4) 7.3 (6.5, 8.2) 8.6 (7.7, 9.6)
Reg. alcohol use and tried cannabis 2.9 (2.4, 3.4) 2.8 (2.3, 3.4) 13.0 (11.9, 14.2) 11.4 (10.4, 12.6)
Smoking and tried cannabis 2.8 (2.4, 3.3) 4.0 (3.5, 4.6) 11.4 (10.4, 12.5) 13.6 (12.6, 14.8)
Delinquency and reg. alcohol use 5.1 (4.6, 5.8) 4.6 (4.0, 5.2) 11.2 (10.2, 12.3) 7.7 (6.8, 8.6)
Delinquency and smoking 3.8 (3.2, 4.5) 5.2 (4.6, 6.0) 9.3 (8.4, 10.4) 8.0 (7.1, 8.9)
Delinquency and drugs 7.8 (7.0, 8.6) 6.0 (5.4, 6.8) 15.8 (14.6, 17.1) 10.3 (9.3, 11.4)
Two or more risk behaviours 11.5 (10.6, 12.6) 11.0 (10.1, 11.9) 25.6 (24.2, 27.1) 21.9 (20.5, 23.4)