Interesting study. Punchstat is used to track punches during a boxing match. A study correlated the punches landed per round and “power punches” with a fatal outcome:

The results showed some significant differences between the fatal and average bouts. The number of punches landed per round was higher in fatal matches: 26.6 for the survivor versus 22.9 for the fighter who died, compared to 9.4 in the average fight.

In fatal matches, the surviving fighters threw and connected on more “power punches” than their opponents. This suggested that the punch-counting system might help to identify fights in which one boxer was entering a “danger level” in terms of the number of punches thrown or landed.