Baclofen group showed significantly larger improvement in Clinician-Administered PTSD Scale total ( P = 0.040 ) , hyperarousal ( P = 0.020 ) , and avoidance ( 0.020 ) scores , Global Assessment of Functioning score ( 0.001 ) , depression ( P = 0.000 ) , and anxiety ( P = 0.000 ) after 8 weeks of treatment .