They're still remarkably rare, don't change the analysis much, and don't matter as much as fatalities. What does get harder is there is no objective idea of wh

They're still remarkably rare, don't change the analysis much, and don't matter as much as fatalities. What does get harder is there is no objective idea of what is a "major" accident versus "minor" accident, so you can spend a lot of time arguing and manipulating statistics, whereas death is easier to quantify objectively and compare (and also happens to be the most serious thing so a necessary analysis anyway).