DFHAGE: Age of family head (derived variable)
DFHAGE is derived from AGEFHD, which gives a value of 0 to all non-family heads or 'heads' aged under 16, and gives to heads of family aged 16 or above a value which is equivalent to the value of that person's age. DFHAGE selects the highest value of AGEFHD across each family, which will correspond to the age of the family head. The variable does not apply to 'no-family' persons - that is, people who are defined as not part of a family.
DFHAGE
16 16 years of age
17 17 years of age
.
.
95 95+ years of age
AGEHEAD derives the age of family heads. It is derived from FAMHEAD and AGE.
CODE MEANING
0 Not the family head
16-95 Age of family head
FAMHEAD (1), AGE (16-95)