Originally Posted by
mr_bill
What *other* "confounding factor" are you leaving out of the "ER stats that I've seen." That's right, age. (Oh, and another hint since you like to make up facts - the majority of TBIs from falls do *NOT* happen on sidewalks.)
CDC shows "falls" as the most significant cause.
CDC | Get the Facts | Traumatic Brain Injury | Injury Center.
This page is about traumatic brain injury, so the reader should keep in mind that it's a subset of the more general "head injury". Nevertheless it proves that it's a fact.
Or in a nice chart from the CDC regarding general non-fatal injuries:

For statistics on the cause of falls you need a different source, sources for which I have cited previously on this thread. If you're that interested, and familiar enough with my writing to attempt that kind of personal attack, I'm sure you've seen it or can find it.
There are any number of external variables which correlate with the probability of falls, and age is one of them. But your objection is misplaced because I am not demonstrating a correlation beyond a very general activity. Notice in the chart above, the high ranking of accidental falls in all age groups.