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Psychiatry Investig. 2011 Jun;8(2):113-22. doi: 10.4306/pi.2011.8.2.113. Epub 2011 Jan 15.

Reliability and validity of the child and adolescent functioning impairment scale in children with attention-deficit/hyperactivity disorder.

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1
Department of Psychiatry, College of Medicine, Soonchunhyang University, Bucheon Hospital, Bucheon, Korea.

Abstract

OBJECTIVE:

The purpose of the present study was to develop reliable and valid parent and teacher scales for measurement of functional impairment in children and adolescents in order to assist the diagnosis of attention-deficit/hyperactivity disorder (ADHD).

METHODS:

Seventy-two children with ADHD fulfilling the Diagnostic and Statistical Manual of Mental Disorder, 4th Edition criteria and forty-two normal controls were enrolled in this study. Parents and teachers of the subjects completed the parent and teacher form of the preliminary items of Child and Adolescent Functioning Impairment Scale (CAFIS) made up by the authors. Based on the reliability and factor analysis, the final parent (CAFIS-parent form) and teacher version (CAFIS-teacher form) were constructed. Scales were analyzed for reliability and validity. Relative operating characteristics curve was drawn to calculate the cutoff scores of these scales for children with ADHD.

RESULTS:

The CAFIS-parent and CAFIS-teacher forms consist of four and three factors, respectively. Internal consistency and test-retest correlation of the scales were satisfactory. The CAFIS and Children's Global Assessment Scale were significantly correlated. All scores of subscales of CAFIS in ADHD group were significantly higher than those of control group. The sensitivity and specificity of the subscales were mostly at an appropriate level.

CONCLUSION:

The CAFIS is a brief layperson-administered scale to assess functional impairment of children and adolescents. It can be a useful tool for parents and teachers to objectively measure the functions of children at home and in school. This scale was found to be reliable and valid, and it appears to be a valuable instrument in Korean language.

KEYWORDS:

Attention-deficit/hyperactivity disorder; Child and adolescent; Impairment; Reliability; Scale; Validity

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