This is how that variable is constructed:

If S216 = 1 or S217 = 1 then Live birth
elseIf S216 = 2                then stillbirth
elseIf S218 =1                 then abortion
elseIf S218 <> 1               then miscarriage

Those variables exist in file PKIR61FL, but in that file they have different variables for each child. For example S216_01 for the last child, S216_02 for the next to last and so on. The same applies for S217 and S218. The reason is because we don't have a pregnancy history file, what we have is a birth history (for children born alive) file (BR).