Tokyo sample of 4-5 year olds
A community sample was drawn from 64 of the 78 preschool or nursery schools from the western
suburbs of Tokyo, Japan. Parents of all children (age 4-5) were invited to fill in SDQs, and 1335
SDQs were collected with complete data on all subscales plus data on age and gender (48%
response rate). With parental permission, teachers in 61 schools (112 classes) in the same area
were likewise asked to fill in SDQs about four children (2 boys, 2 girls) per class using a
predetermined rule (95% response rate among teachers). 402 teacher SDQs were collected with
complete data on all subscales plus data on age and gender.
Details of the study are described, in Japanese, in: Iida, Y., Moriwaki, A., Komatsu, S., Kamio,
Y. (2014). Standardization of the Strengths and Difficulties Questionnaire among Japanese 4-5
year-old preschool children, In: Kamio, Y., ed. Annual report of research supported by health
and labour sciences research grants. Prevalence of developmental disorders and its
developmental change: a community-based cross-sectional and prospective study. [In Japanese],
National Center of Neurology and Psychiatry, Tokyo, pp.33-41.
National sample of 7-15 year olds
A volunteer sample of 148 primary schools and 71 secondary schools took part across the 10
geographical regions of Japan. Parents of all school children (age 7-15) were invited to fill in
SDQs, and 24,431 SDQs were collected with complete data on all subscales plus data on age and
gender (28% response rate). These parent SDQ were primarily rated by mothers (91%), with the
remainder rated by fathers (8%), both parents together (0.7%), and others (0.6%).With parental
permission, teachers in 211 of the 219 schools were likewise asked to fill in SDQs (78% response
rate among teachers), and 7885 SDQs were collected with complete data on all subscales plus
data on age and gender.
The details of the study of 7-15 year olds is described in: Moriwaki A., Kamio Y. 2014
‘Normative data and psychometric properties of the Strengths and Difficulties Questionnaire
among Japanese school-aged children.’ Child and Adolescent Psychiatry and Mental
Health 8(1) doi:10.1186/1753-2000-8-1.
| Sample means plus standard deviations (split by gender): | |
|
For 4-15 year olds, and split by age group |
| Frequency distributions (split by gender): | |
|
For 4-15 year olds |
|
For 4-5 year olds |
|
For 7-9 year olds |
|
For 10-12 year olds |
|
For 13-15 year olds |
Last modified : 22/03/13