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Child and Adolescent Psychiatry and Mental Health
Published in: Child and Adolescent Psychiatry and Mental Health 1/2013

Open Access 01-12-2013 | Research

The reliability and validity of the Questionnaire - Children with Difficulties (QCD)

Authors: Masahide Usami, Daimei Sasayama, Nobuhiro Sugiyama, Nana Hosogane, Soo-Yung Kim, Yushiro Yamashita, Masaki Kodaira, Kyota Watanabe, Yoshitaka Iwadare, Tetsuji Sawa, Kazuhiko Saito

Published in: Child and Adolescent Psychiatry and Mental Health | Issue 1/2013

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Abstract

Background

The aim of this study was to evaluate the reliability and validity of the Questionnaire-Children with Difficulties (QCD), which was developed for the evaluation of children’s daily life behaviors during specified periods of the day.

Methods

The subjects were 1,514 Japanese public elementary and junior high school students. For the examination of reliability, Cronbach’s alpha was calculated to assess the internal consistency of the questionnaire. With regard to validity, correlation coefficients were calculated to examine whether QCD scores correlated with those of the ADHD-Rating Scale (ADHD-RS) and the Oppositional Defiant Behavior Inventory (ODBI).

Results

Cronbach’s alpha coefficient for the total score of the QCD was .876. The correlation coefficients of the QCD score with ADHD-RS and ODBI scores were -.514 and -.577, respectively.

Conclusions

The internal consistency and validity of the QCD were demonstrated. The QCD is a reliable and valid instrument for evaluating daily life problems for children during different time periods of the day.
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Metadata
Title
The reliability and validity of the Questionnaire - Children with Difficulties (QCD)
Authors
Masahide Usami
Daimei Sasayama
Nobuhiro Sugiyama
Nana Hosogane
Soo-Yung Kim
Yushiro Yamashita
Masaki Kodaira
Kyota Watanabe
Yoshitaka Iwadare
Tetsuji Sawa
Kazuhiko Saito
Publication date
01-12-2013
Publisher
BioMed Central
Published in
Child and Adolescent Psychiatry and Mental Health / Issue 1/2013
Electronic ISSN: 1753-2000
DOI
https://doi.org/10.1186/1753-2000-7-11

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