Three years after she began the “heart-wrenching” and “emotionally draining” experience of mediating wrongful-death and personal-injury lawsuits that arose out of the Sept. 11 terror attacks, it is impossible to tell whether the litigants received better recoveries than people who went through a compensation fund created by Congress, attorney Sheila L. Birnbaum said in a final report to Southern District of New York Judge Alvin Hellerstein.

Birnbaum’s report, which was accepted by Hellerstein last week, details efforts that have left all but three of 95 cases settled for a total of $500 million.