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Table 1 Number of children in the normative sample by gender and grade

From: Normative data and psychometric properties of the strengths and difficulties questionnaire among Japanese school-aged children

Grade

SDQ parent ratings (n = 24,519)

SDQ teacher ratings (n = 7,977)

Boys

%

Girls

%

Boys

%

Girls

%

1

1,792

14.4

1,633

13.6

526

13.1

519

13.1

2

1,662

13.3

1,514

12.6

547

13.6

540

13.6

3

1,526

12.2

1,541

12.8

481

12.0

485

12.2

4

1,479

11.9

1,506

12.5

509

12.7

506

12.8

5

1,562

12.5

1,382

11.5

499

12.4

478

12.0

6

1,321

10.6

1,334

11.1

484

12.1

486

12.3

7

1,162

9.3

1,186

9.8

346

8.6

343

8.6

8

1,100

8.8

1,136

9.4

316

7.9

307

7.7

9

868

7.0

815

6.8

302

7.5

303

7.6

Total

12,472

 

12,047

 

4,010

 

3,967

 
  1. Note. SDQ, strengths and difficulties questionnaire. Most grade 1 participants were 7 years old at the time of the survey.
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Child and Adolescent Psychiatry and Mental Health

ISSN: 1753-2000