A total of 279 treated subjects were included in the safety evaluation
(aripiprazole: n = 139; risperidone: n = 140). One hundred and five
subjects (76%) in the aripiprazole group and 116 subjects (83%) in the
risperidone group experienced at least one treatment-emergent
adverse event (TEAE). The incidence of TEAEs was similar in the
aripiprazole and risperidone treatment groups. The majority of TEAEs
were transient and considered to be mild to moderate in severity,
and no serious adverse events occurred in either group. No subject
discontinued due to adverse events in the aripiprazole group, and only
one subject (1%) discontinued in the risperidone group (Fig. 1). There
was no significant withdrawal difference between the two groups.