The letters in this expression indicate obstetric history as follows:
Often, 4 numbers separated by hyphens are recorded, as in the following:
TPAL: 3-1-1-4 or 3-1-1-4
This expression indicates 3 term births, 1 premature birth, 1 abortion, and 4 living children. However, the text of a manuscript should define the numerical expressions and not give the numbers alone....