3 ms·
That can still be a demographic effect. The people over 65 today are not the same people who were over 65 two years ago. The correct way to control these stat
by thrownaway2424 13y ago
That can still be a demographic effect. The people over 65 today are not the same people who were over 65 two years ago.
The correct way to control these statistics is by birth-year cohort, not age.