How does a Root Cause Analysis, (RCA) differ from other quality improvement tools? How does a Root Cause Analysis, (RCA) differ from other quality improvement tools? A Root Cause Analysis follows a DIMAC model for reviewing the improvement problem. In a Root Cause Analysis teams are asked to reconstruct the process that leads to either the error or improvement problem before proposing a solution. The theory of Root Cause Analysis assumes there is only one possible cause for the problem. Root Cause Analysis theory attempts to identify the individual responsible for the intrinsic problem and terminate that individuals employment