You mean that civilian casualties were based on a "computer model"?
There is not a single chance in hell that that 100,000 figure was produced by any sort of responsible modelling. They appear to have counted everyone that died from almost any cause, threw in the mortality figure for canines over the age of 5, and made purely asinine assumptions about so-called imputed deaths into the bargain.
As someone noted earlier, this ''study'' was the purest of political ploys, which sentiment is instantly confirmed by both its incompetence and the timing of its release.