Interviewer instructions
The actual date of birth should be entered.If the respondent does not know the exact date, ask the question relating to the age at last birthday and write it in. Whether the actual date of birth is known or you have had to ask the age, write in the person’s age in the box provided.
There may be instances, especially in the case of old people, where a respondent does not remember his/her age or the exact age of the person to whom you are referring. Since a ‘not stated’ or ‘not known’ answer or a blank is NOT ACCEPTABLE and would require that you pay another visit to the household, you
may need to probe to find out the correct answer or to ask to see the person himself/herself.
If age is not stated please estimate age if you see the person. Otherwise ask the respondent to estimate the person's age. We would much rather have an estimated age than try to impute an age using a computer program which can in this instance come up with a very inaccurate estimate.