Attention-deficit/hyperactive-impulsive disorder symptoms among grade 1 students with reading disorder in Thailand

Background: Reading disorder is the most common comorbid condition with attention-deficit/hyperactive-impulsive disorder (ADHD) in school-aged children.Purpose: This study compared symptoms of ADHD among children in grade 1 at risk of reading disorder with children not at risk.Methods: This cross-sectional study included 703 students in grade 1 aged 6–8 years from 8 schools in Pathumthani Province, Thailand, in 2019. Reading disorder was assessed using tools developed by Vibulpatanavong and Evans for Thai teachers, whereas the Thai parent and teacher versions of the Swanson, Nolan, and Pelham IV Rating Scale (SNAP-IV) was used to evaluate ADHD symptoms. Demographic data were collected from parents using a self-reported questionnaire.Results: Among the 703 students with almost equal number of male (n=350) and female (n=353), and the average age of 6.56±0.57 years, 95 (13.51%) were classified (significantly male) at risk of reading disorder. The mean SNAP-IV scores of children with reading disorder reported by parents and teachers (20.23±10.95 and 20.75±15.08, respectively) were significantly higher than those of neurotypical children (16.04 ±8.59 and 9.00±10.14, respectively, P