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  • Title: Psychometric properties of the Chinese version of the Swanson, Nolan, and Pelham, version IV scale - parent form.
    Author: Gau SS, Shang CY, Liu SK, Lin CH, Swanson JM, Liu YC, Tu CL.
    Journal: Int J Methods Psychiatr Res; 2008; 17(1):35-44. PubMed ID: 18286459.
    Abstract:
    This study aimed to establish the psychometric properties of parent ratings on the Chinese version of the Swanson, Nolan, and Pelham IV scale (SNAP-IV) in a school-based sample of 3534 students in grades 1 to 8 from two cities and two suburbs in Taiwan and 189 children diagnosed with attention deficit/hyperactivity disorder (ADHD) (aged 6 to 15) consecutively recruited from a medical center in Taipei. Parents completed the Chinese versions of the SNAP-IV, Strengths and Difficulties Questionnaire, and Child Behavior Checklist. The Chinese SNAP-IV demonstrated similar three factor structure (Inattention, Hyperactivity/Impulsivity, and Oppositional) as its English version, and satisfactory test-retest reliability (intraclass correlation = 0.59 approximately 0.72), internal consistency (alpha = 0.88 approximately 0.90), concurrent validity (Pearson correlations = 0.56 approximately 0.72), and discriminant validity. Boys scored higher than girls across the eight school grade levels. The SNAP-IV clearly distinguished children with ADHD from school-based participants. Comorbidity with oppositional defiant disorder/conduct disorder predicted higher SNAP-IV scores among children with ADHD. Our findings suggest that the Chinese SNAP-IV is a reliable and valid instrument for rating ADHD-related symptoms in both clinical and community settings in Taiwan.
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