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Table 3 Illicit substances use, the age of initiation, and frequency of illicit substances use among adolescents in Poland stratified by sex

From: Smoking, alcohol consumption, and illicit substances use among adolescents in Poland

  Sex   p
female male total
n % n % N %
The age of initiation Below the age of 8 years 1 0,34 6 2,42 7 1,30 Z = 3,24 0,001
11–12 years of age 10 3,45 8 3,23 18 3,35
13–14 years of age 19 6,55 37 14,92 56 10,41
15–16 years of age 2 0,69 2 0,81 4 0,74
Never used illicit substances 258 88,97 195 78,63 453 84,20
Total 290 100,00 248 100,00 538 100,00
Current use of illicit substances I don’t use illicit substances 272 94,12 207 83,47 479 89,20 χ2(1, N = 537) = 15,71 < 0,001
I use illicit substances 17 5,88 41 16,53 58 10,80
Total 289 100,00 248 100,00 537 100,00
Frequency of illicit substances use [refers to those who declared illicit substances use] 1–2 in life time 2 11,76 7 17,07 9 15,52 Z = 0,44 0,658
Occasionally 11 64,71 25 60,98 36 62,07
1–3 a week 1 5,88 4 9,76 5 8,62
More than 3 times a week 3 17,65 5 12,20 8 13,79
Total 17 100,00 41 100,00 58 100,00
  1. Differences between female and men were analysed using either U Mann-Whitney test or Pearson chi-square test. (Those, who currently do not use illicit substances could have the history of the use in the past)