In treating panic disorder with agoraphobia,
the average dropout rate has been found to be 19%,
with a range between 0% and 54%. Longitudinal
studies have found a relatively high recurrence rate of
symptomatology (Arch & Craske). Moreover, the
question of the extent to which the findings from
RCTs are able to generalize to clinical settings has
been questioned. As noted by Craske and Barlow
(2008)