Table 1.

Study Inclusion Criteria.

Adults (age ≥ 17)

Current PTSD diagnosis

Published in English in peer-reviewed journal

PTSD outcome measure with high reliability and validity -Clinician-Administered PTSD Scale [6] -Davidson Trauma Scale [8] -Impact of Event Scale [9] -PTSD Checklist [10] -Posttraumatic Diagnostic Scale [11] -PTSD Symptom Scale [12]

Randomized treatment allocation

If evaluating a single modality, includes a minimal control group (e.g., placebo, wait-list, or psychotherapy control condition)

If an augmentation treatment study (in which an experimental intervention was added to an established treatment), includes a control condition arm that did not employ the experimental intervention

Treatment group improves significantly more than the control group on the PTSD outcome measure at a 2-sided alpha < 0.05 for the intent-to-treat sample

Adequate sample size (see text)