1. Based on the number of individuals to be surveyed in each settlement, the number of routes was calculated. For example, in Atyrau there were 4 routes (40/10=4).

2. Routes had initial addresses situated in different parts of the city, along with route direction. An interviewer following a given route had to interview one person in a multi-storey block of flats, in the private sector there had to be one woman in every fifth house along the given route.

3. An interviewer would stop a woman, entering or exiting a building, and if she corresponded to the age criteria, would make an interview appointment.

Thus random sampling was ensured also following age criteria.