Interviewer instructions
Column (2) through (5) Mother's status
The intention here is to ask about the birth mother of the relevant people.
Column (4)
Here we want to know whether this person is the eldest child of his/her mother, so ask:
"Are you this mother's first child?" Fill in code "Y", and directly ask the question for column (6).
If "No" enter code "T", and then ask the question in column (5).