18. How old were you when you had your first live birth?
Information on live births (fertility) should be obtained for all women aged 15 to 49 years. For all others, i.e. for women less than 15 years and those more than 49 years and all males, "N/A" should be recorded.
Information should be requested of all women 15-49 years, irrespective of their marital status or whether you think they have borne children or not. Efforts should be made to get responses from the women themselves and permission to do so should be obtained from the head of household. If the woman concerned is not present, someone else - preferably the head of household - should be used to answer the questions.
Definition of live birth
A child born alive is one who cries after being born. Thus, a live birth is a birth which results in a child that shows any sign of life irrespective of the time of period within which these signs are manifest.
Question 18: How old were you/name when you/she had your/her first live birth?
The question refers to the age of the mother at the time of the first live birth {not first pregnancy), and to be recorded in completed years:
actual age in completed years
"99" for not known (very limited cases)
p.26
Check the consistency with question 4 and 17.