Differential Parent and Teacher Reports of ADHD Symptoms According to the Child's Country of Origin: A Quantitative Study From Denmark Exploring the Implication for Diagnosis.

Objective: This study aimed to investigate differences in parent- and teacher-reported ADHD symptoms according to the child's country of origin. Method: We conducted a cross-sectional study of 4,207 nonimmigrant (Danish origin) and 233 immigrant (non-Danish origin) children including ratings of phenotypical ADHD symptoms on the Strengths and Difficulties Questionnaires. The association between ADHD symptoms and country of origin, separately for parents and teachers, was analyzed using multiple logistic regression. Results: Teachers reported similar numbers of ADHD symptoms for immigrant and nonimmigrant children (odds ratio [OR] = 0.95, confidence interval [CI] = [0.58, 1.54]), whereas immigrant parents were less likely than nonimmigrant parents to report ADHD symptoms (OR = 0.42, CI = [0.21, 0.84]). Conclusion: Immigrant parents were less likely than nonimmigrant parents to report ADHD symptoms, whereas the teachers reported similar amount of ADHD symptoms in the two groups of children. Our results emphasize the importance of paying attention to teacher reporting of ADHD symptoms when assessing immigrant children.