Description: A textual description of the way in which this variable was derived.
Example(s):
<var><derivation><drvdesc> VAR215.01 "Outcome of first pregnancy" (1988 NSFG=VAR611 PREGOUT1)
If R has never been pregnant (VAR203 PREGNUM EQ 0) then OUTCOM01 is blank/inapplicable. Else, OUTCOM01
is transferred from VAR225 OUTCOME for R's 1st pregnancy. </drvdesc></derivation></var>