The entire population
[Questions B01 through B10 were asked of all persons.]

B07. Date of birth

B07: date of birth
The date of birth that allows knowing the age of the individual is a very important piece of information from the census. So, you have to do everything you can to get the exact information. Before asking the question about the date of birth of the members and visitors of the household, ask to consult all the birth certificates (or other documents that can inform about the date of birth) if possible, to avoid repeated unnecessary searches that the respondents may be led to do. However, you must make sure that the items that have been presented to you are reliable. If not, make the estimates necessary to determine the date of birth of the person concerned.
Two cases may arise:
1st case: for persons who have a civil registry or identity document with a full date of birth, ask whether this date is a result of a declaration of birth or a judgment.
[p. 34]
- If it is a declaration of birth: Enter the rank of the month in the boxes under which is marked ''month'' and the year in the boxes under which is marked ''year''.
Example: An individual was born on February 3, 1948. Fill in the column as follows:
/_0_/_2_/
Month
/_1_/_9_/_4_/_8_/
Year
NB:
1. If the month and year of birth are known, go to B09:
2. If the month is not known and the year is known, enter 07 (month of July) for the month.
3. If the month and year of birth are not known, fill in the column as follows:
/_9_/_9_/
Month
/_9_/_9_/_9/_9_/
Year
2nd case: The individual does not have any civil registry document: Then make a rigorous estimate using the historical calendar and other means of estimation to have at least the year of birth.
And then you move on to the next question.
NB: For children under the age of 5, accept birth certificates and possibly child health records.