Mean ± SEM scores of two groups of children on the Parent ADHD Rating Scale. ns = non-significant, *** = P < 0.001. The horizontal symbols (***) were used to express statistical significance versus their respective baseline value and the vertical symbols are for between group comparisons.
Akhondzadeh et al. BMC Psychiatry 2004 4:9 doi:10.1186/1471-244X-4-9