Family socioeconomic status and attention-deficit/hyperactivity disorder symptoms in preschool children: a cross-sectional study of 21,366 parent–child dyads in Yan’an, western China
Socioeconomic status (SES) is a well-established determinant of child mental health, yet evidence from large preschool populations in western China remains scarce. This study examined the association between family SES and attention-deficit/hyperactivity disorder (ADHD) symptoms in preschool children. We con...