What does a combined rating mean (PEB math)?
Per instruction in the VASRD, the PEB combines ratings. The PEB arranges the rated conditions in the order of their severity, beginning with the greatest disability, and then rates each as a percentage of remaining efficiency. For example, a Soldier with a 60% disability is considered 40% efficient. If the Soldier also has a 30% disability, it is measured as 30% of the remaining 40%, leaving the Soldier as 28% efficient, or 72% disabled. The 72% is rounded to 70%, which is the Soldier’s combined rating. This system of combined ratings is complicated. If you receive a combined rating your PEBLO can explain how it was determined.
