1. Applying a crash (or vehicle) level variable to people.

There are many instances where it is appropriate to do this, if one wants to know how many
PEOPLE are in fatal crashes the level of analysis must be at the PERSON LEVEL and the filter
must be either CRASH: FATAL CRASH = YES or WORST INJURY IN ACCIDENT = FATAL. But the count
will be all the people involved, not just the fatalities. To get the fatalities one must
filter (or make a table with) PERSON DEGREE OF INJ(ury).

To best understand this make a table at the PERSON level of WORST INJURY IN ACCIDENT by
PERSON DEGREE OF INJURY. You will see that approximately half the people at any given
CRASH severity level actually have an injury of that severity (except the no-injury level)
while the other involved persons have a lesser severity injury or no injury at all.

2. PERSON level analysis interpreted as CRASH count, the opposite of the problem above.

The user wants to know how many crashes involved an ejection, filters at occupant level for
PERSON EJECTION = YES, count is PERSONS, not CRASHES. There can be multiple persons ejected
in one crash.

The same problem can happen when vehicle-level analysis is done, it produces a VEHICLE count,
not a CRASH count.