From: Prevalence of school bullying and its relationship with attention deficit-hyperactivity disorder and conduct disorder: a cross-sectional study
Item
Frequency
%
Sex
Males
146
52.1%
Females
134
47.9%
Age
Mean ± SD
11.08 ± 0.8
Median (interquartile range)
11 (10–12)
School grade
Grade four
83
29.6%
Grade five
93
33.2%
Grade six
104
37.1%