Record the day, month and year of birth. If the respondent does not know, fill out the question with lines and go on to the next question.

For respondents who state having been born before September 1, 1870, that is, those who are age 100 or older, there can be no information on this question, and the information should be recorded in Question 6, box of Over 1 year of age, code 99.

Records may only be written in Arabic numerals.