Table 1: Classification of sample characteristics in the full sample (N = 2637 ).
| Item |
Variables |
Uninvolved |
Victim |
Bully/Victim |
Bully |
| Total |
|
100% (2002) |
100% (412) |
100% (96) |
100% (127) |
| Gender |
Female |
51% (1024) |
49% (203) |
28% (27) |
30% (38) |
|
Male |
49% (974) |
51% (209) |
72% (69) |
70% (89) |
| Age |
|
13 (12; 14) |
13 (11; 14) |
13 (12; 14) |
13 (12; 14) |
| Parental age mother |
|
29 (25; 32) |
28 (25; 32) |
28 (25; 32) |
28 (25; 31) |
| Parental age father |
|
31 (28; 35) |
31 (27; 34) |
31 (28; 35) |
31 (28; 34) |
| Parental behavior |
|
0 (-1; 1) |
-1 (-2; 0) |
-1 (-2; 0) |
0 (-2; 1) |
| Internalizing symptoms |
|
14 (0; 29) |
57 (29; 71) |
57 (29; 71) |
29 (14; 57) |
| Communication |
++ |
56% (1128) |
35% (146) |
29% (28) |
49% (62) |
|
+ |
9% (175) |
9% (39) |
7% (7) |
7% (9) |
|
- |
35% (697) |
55% (227) |
63% (60) |
44% (56) |
| Parental involvement |
++ |
48% (948) |
25% (104) |
22% (21) |
43% (54) |
|
+ |
19% (381) |
23% (92) |
18% (17) |
14% (18) |
|
- |
33% (665) |
52% (212) |
60% (58) |
43% (54) |
| Parental support and onitoring |
++ |
72% (1443) |
62% (255) |
39% (37) |
61% (77) |
|
+ |
20% (405) |
25% (101) |
38% (36) |
24% (31) |
|
- |
8% (154) |
14% (56) |
24% (23) |
15% (19) |
| Affective relationship |
++ |
55% (1091) |
34% (142) |
27% (26) |
46% (58) |
|
+ |
13% (251) |
13% (54) |
19% (18) |
13% (17) |
|
- |
33% (658) |
52% (216) |
54% (52) |
41% (52) |
| Self-esteem |
|
3 (2; 3) |
3 (2; 3) |
3 (2; 4) |
2 (2; 3) |
| Family characteristics |
Living with both parents |
84% (1682) |
78% (322) |
76% (73) |
79% (100) |
|
Family break-up |
13% (252) |
13% (54) |
12% (12) |
17% (22) |
|
Family break-up without contact to one parent |
3% (68) |
9% (36) |
11% (11) |
4% (5) |
| Physical or mental illness of a parent |
Good |
96% (1916) |
89% (367) |
92% (88) |
95% (121) |
|
Bad |
4% (86) |
11% (45) |
8% (8) |
5% (6) |
| Death of a parent |
No |
97% (1946) |
97% (401) |
93% (89) |
98% (124) |
|
Yes |
2% (50) |
2% (10) |
5% (5) |
2% (3) |
|
NA |
0% (6) |
0% (1) |
2% (2) |
0% (0) |
| Number of rooms of the flat |
>4 |
29% (585) |
32% (132) |
32% (31) |
28% (35) |
|
4 |
19% (373) |
20% (81) |
19% (18) |
19% (24) |
|
5 |
18% (355) |
15% (63) |
17% (16) |
17% (21) |
|
6 |
11% (215) |
11% (45) |
15% (14) |
10% (13) |
|
<6 |
21% (430) |
21% (87) |
15% (14) |
22% (28) |
|
NA |
2% (44) |
1% (4) |
3% (3) |
5% (6) |
| Siblings |
none |
8% (164) |
11% (45) |
5% (5) |
5% (6) |
|
one |
47% (943) |
45% (186) |
49% (47) |
50% (63) |
|
two |
29% (571) |
25% (104) |
27% (26) |
30% (38) |
|
more |
14% (282) |
16% (65) |
15% (14) |
15% (19) |
|
NA |
2% (42) |
3% (12) |
4% (4) |
1% (1) |
| Occupation mother |
Blue-collar |
82% (1447) |
82% (290) |
83% (62) |
88% (98) |
|
none |
1% (23) |
2% (8) |
4% (3) |
0% (0) |
|
White-collar |
16% (279) |
16% (56) |
13% (10) |
12% (13) |
|
Retired |
0% (7) |
0% (1) |
0% (0) |
1% (1) |
| Occupation father |
Blue-collar |
76% (1243) |
79% (260) |
79% (58) |
71% (72) |
|
none |
2% (33) |
1% (4) |
3% (2) |
2% (2) |
|
White-collar |
21% (335) |
19% (62) |
15% (11) |
25% (26) |
|
Retired |
1% (16) |
2% (5) |
3% (2) |
2% (2) |
Parental age: age at birth; parental behavior: sum index [-2 to +2]; statistic: percent (number of subjects), median (upper quantile, lower quantile)