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Table 1 Demographic characteristics of the sample, N = 83

From: Does the Incredible Years Teacher Classroom Management Training programme have positive effects for young children exhibiting severe externalizing problems in school?: a quasi-experimental pre-post study

Demographic characteristics

IY TCM

Control

Total

Child

 N Gradea

45 (100 %)

38 (100 %)

83 (100 %)

 1st grade

14 (31,1 %)

14 (36,8 %)

28 (33,7 %)

 2nd grade

11 (24,4 %)

8 (21,1 %)

19 (22,9 %)

 3rd grade

20 (44,4 %)

16 (42,1 %)

36 (43,4 %)

Genderb

 Boys, n (%)

38 (84.4 %)

27 (71.1 %)

65 (78.3 %)

 Girls, n (%)

7 (15.6 %)

11 (28.9 %)

18 (21.7 %)

Teacherc

 N

35 (100 %)

31 (100 %)

66 (100 %)

 1st grade

11 (31.4 %)

11 (35.5 %)

22 (33.3 %)

 2nd grade

9 (25.7 %)

6 (19.4 %)

15 (22.7 %)

 3rd grade

15 (42.9 %)

14 (45.2 %)

29 (44.0 %)

School

 N

16

18

34

  1. Notes: Tests for group differences: a p = .85, b p = .14, c p = .82