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. 2012 Apr 5;12:274. doi: 10.1186/1471-2458-12-274

Table 2.

Substance abuse (smoking, alcohol, ephedrine, speed and ecstasy) among male and female adolescents (F – frequency, % - percentage), Kruskal Wallis ANOVA and T-test between sexes (H – H value; t – t value; p – level of significance)

  BOYS
GIRLS
Kruskal Wallis
(T Test)
F % F % H (t) p
Smoking…
 
 
 
 
 
 
I have never smoked (1)
167
38.39
324
54.27
 
 
Quit smoking (2)
15
3.45
30
5.03
 
 
Occasionally, from time to time, but not daily (3)
92
21.15
139
23.28
 
 
Less than 10 cigarettes per day (4)
106
24.37
72
12.06
 
 
10-20 cigarettes per day (5)
46
10.57
22
3.69
 
 
More than a pack per day (6)
 
 
 
 
 
 
Missing
9
2.07
10
1.68
44.69
0.001
Alcohol drinking (AUDIT) *
 
 
 
 
 
 
Non-harmful drinking
224
-
482
 
 
 
Harmful drinking
204
-
105
 
 
 
Missing
7
1.61
10
1.67
12.04
0.001
Ephedrine
 
 
 
 
 
 
Never (1)
415
95.40
581
97.32
 
 
Ever tried (2)
2
0.46
 
 
 
 
Once or twice (3)
1
0.23
1
0.17
 
 
3-5 time (4)
2
0.46
 
 
 
 
6-9 times (5)
 
 
 
 
 
 
10-19 times (6)
1
0.23
 
 
 
 
Missing
14
3.22
15
2.51
5.53
0.020
Cocaine
 
 
 
 
 
 
Never (1)
406
93.33
580
97.15
 
 
Ever tried (2)
5
1.15
-
-
 
 
Once or twice (3)
3
0.69
1
0.17
 
 
3-5 times (4)
1
0.23
-
-
 
 
6-9 times (5)
2
0.46
-
-
 
 
10-19 times (6)
5
1.15
-
-
 
 
Missing
13
2.99
16
2.68
19.21
0.001
Speed and Ecstasy
 
 
 
 
 
 
Never (1)
404
92.87
578
96.82
 
 
Ever tried (2)
6
1.38
2
0.34
 
 
Once or twice (3)
4
0.92
1
0.17
 
 
3-5 times (4)
2
0.46
-
-
 
 
6-9 times (5)
3
0.69
-
-
 
 
20-39 times (6)
-
-
-
-
 
 
40 and more (7)
3
0.69
-
-
 
 
Missing 13 2.99 16 2.68 16.84 0.001

LEGEND: * Differences between genders for AUDIT were calculated by t-test; number in parentheses presents ordinal value for each variable.