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. 2014 Jan 21;8:1. doi: 10.1186/1753-2000-8-1

Table 4.

Results of exploratory factor analysis (Varimax Rotation) of parent- and teacher-rated SDQs for Japanese children

SDQ items
Parent ratings (n= 24,519)
Teacher ratings (n= 7,977)
Factor I
Factor II
Factor III
Factor IV
Factor V
Communality
Factor I
Factor II
Factor III
Factor IV
Factor V
Communality
  Pro Hyper Emotion Conduct Peer   Pro Hyper Emotion Conduct Peer  
Initial eigenvalue
4.88
2.60
1.70
1.21
1.12
11.52
7.07
2.60
1.82
1.24
1.08
13.80
% of variance
9.06
16.82
23.68
28.39
33.03
 
16.68
28.53
38.89
47.25
55.22
 
Prosocial behavior
 
 
 
 
 
 
 
 
 
 
 
 
  1 considerate
-.63
 
 
 
 
.45
-.75
 
 
 
 
.65
  4 shares
-.49
 
 
 
 
.26
-.64
 
 
 
 
.44
  9 caring
-.66
 
 
 
 
.45
-.81
 
 
 
 
.69
  17 kind to kids
-.53
 
 
 
 
.29
-.74
 
 
 
 
.57
  20 helps out
-.58
 
 
 
 
.37
-.78
 
 
 
 
.63
Hyperactivity/inattention
 
 
 
 
 
 
 
 
 
 
 
 
  2 restless
 
.56
 
 
 
.46
 
.80
 
 
 
.74
  10 fidgety
 
.27
.34
 
 
.27
 
.61
 
 
 
.56
  15 distractive
 
.69
 
 
 
.63
 
.82
 
 
 
.77
  21 reflective (*)
 
.56
 
 
 
.44
 
.57
 
 
 
.63
  25 persistent (*)
 
.64
 
 
 
.50
 
.59
 
 
 
.59
Emotional symptoms
 
 
 
 
 
 
 
 
 
 
 
 
  3 somatic complaints
 
 
.31
 
 
.14
 
 
.54
 
 
.37
  8 worries
 
 
.55
 
 
.37
 
 
.75
 
 
.59
  13 unhappy
 
 
.44
 
 
.30
 
 
.65
 
 
.48
  16 clingy
 
 
.62
 
 
.43
 
 
.68
 
 
.56
  24 fears
 
 
.51
 
 
.29
 
 
.68
 
 
.51
Conduct problems
 
 
 
 
 
 
 
 
 
 
 
 
  5 temper
 
 
 
.45
 
.33
 
 
 
.57
 
.49
  7 obedient (*)
.44
 
 
.28
 
.30
.54
 
 
.38
 
.44
  12 fights
 
 
 
.46
 
.25
 
 
 
.67
 
.60
  18 lies, cheats
 
 
 
.41
 
.31
 
 
 
.62
 
.54
  22 steals
 
 
 
.23
 
.07
 
 
 
.58
 
.34
Peer problems
 
 
 
 
 
 
 
 
 
 
 
 
  6 solitary
 
 
 
 
.41
.21
 
 
 
 
.70
.55
  11 good friend (*)
 
 
 
 
.38
.18
 
 
 
 
.61
.48
  14 popular (*)
 
 
 
 
.42
.34
.55
 
 
 
.42
.59
  19 picked on, bullied
 
 
 
 
.44
.33
 
 
 
 
.52
.44
  23 best with adults         .50 .31         .68 .54

Note. SDQ, strengths and difficulties questionnaire. *indicates a reverse item and inverted scores were analyzed.