Completer analysis indicated that 29 of 47 patients ( 62 % ) in the treatment group had recovered from posttraumatic stress symptoms at posttreatment ( reliable change and Posttraumatic Stress Diagnostic Scale score < 20 ) versus 1 patient ( 2 % ) in the control group ( OR 74.19 , 95 % CI 9.93-585 .8 , P < .001 ) indicating that the chance of recovering was 74.19 times higher in the treatment than in the control group .