25. Of these, how may are alive?

Information about the variable fertility will be gathered for women 12 years old or older. In a strict sense, this variable, is the real frequency of births in the female population.
Information about the variable mortality will be gathered for all of those surviving of the sons/daughters born alive by women 12 years old or older. It is defined as: the permanent disappearance of all signs of life, whatever was the time that passed since the birth.
The gathering of information for this section in the census offers the opportunity of grouping information for estimating these variables to the national level in an economic way and principally to bring the vital statistics up to date.

Question No. 24: How many sons and daughters have you had born alive?

Children born alive are considered all those who upon being born have presented vital signs such as breathing, crying or movement even when they have died immediately after having presented these signs.
In this question information proportionate to the feminine population 12 years old or older is requested without considering her civil or marital state, referring to the number of sons/daughters born alive she had all of her reproductive life to the date of the census.

[To the left of the text is a picture of a baby and to the right is a picture of a woman and a baby.]

Read the question naturally, over all when the enumerated dwelling has women of this age. If you note surprise, explain that in some dwellings there are women who have children at very young ages, for this reason the question always has to be asked: When number of children born is less than ten, put a 0 in front of the number.
Write down in the corresponding spaces the number of sons and daughters that the woman declares and continue with question 25.

[p. 110]

For women who have never had children, mark the circle "None" and finish the interview with this person.
Adopted children or stepchildren of women residents of the dwelling should not be counted.

Question No. 25: Of these [children] how many are alive?

The information refers to the number of sons/daughters currently alive including all sons/daughters who the woman has had that are alive at the date of the census.

[To the right and left of the text are pictures of babies.]

Write down in the corresponding spaces the response of the woman. The number of children declared in this question should be less than or equal to the response in question 24. If no child is alive, write down "00".