Background: Although considerable research has tested evidence-based practices in clinical
trials, research is needed on the use of trauma-focused treatments by victims of crime and
violence in naturalistic settings. This study investigated four trauma-focused treatments,
prolonged exposure therapy (PE), cognitive behavioral therapy (CBT), eclectic therapy, and
person-centered therapy (PCT), and assessed treatment dropout and symptom improvement over
five assessment time-points. Methods: Descriptive comparisons and pattern mixture multigroup
growth models were used to assess differences between treatments on time in treatment, rate of
dropout, and improvement in posttraumatic stress (PTSD) and depression symptoms in an
outpatient sample of 526 clients seeking routine clinical care. Results: PCT was significantly
associated with the highest number of therapy sessions completed and the lowest rate of dropout
(41.75%) compared to CBT and eclectic treatments. All treatment groups reported PTSD
symptom improvement with no significant differences based on therapy type. For depression,
the rate of improvement for clients in PCT who dropped out of treatment after session 3 was
significantly steeper than the rate of improvement for clients in eclectic treatment who dropped
out of treatment after session 3. Clients who stayed in treatment longer generally had larger
decreases in symptoms compared to those who dropped out earlier. Limitations: The small
sample size in each of the treatment groups may have limited power to detect change.
Conclusions: Several trauma-focused treatments offered in a community-based setting may
result in significant symptomatic improvement.