This graph shows the changes in posttraumatic stress (PTS) symptoms as reflected in scores on the Post-Traumatic Stress Disorder Checklist (PCL) in the two groups. Both groups indicated severe PTS symptoms at baseline. Visible improvements can be seen in the TM group. While a drop in 11 points on this measure is considered clinically significant, TM practice led to three times that drop in PTS symptoms after 30 days practice. The TM group went to a non-symptomatic level after 30-days and remained low at 135-days.