IANAD but I would expect that for every person to "fall down" because they were close enough to a lightning strike that the electrical effects caused them to lo

IANAD but I would expect that for every person to "fall down" because they were close enough to a lightning strike that the electrical effects caused them to lose muscle control and suffer burns there would be 100 people who were close enough to "fall down" due to the concussive force of being close, but not close enough to receive trauma from the elctricity directly.