Method to estimate the survival rate of internal migration size.. likelihood of survival of their regiment of the population in the age group in a given census to the next census

- Any possibility to stay Regiment of the population in the age group in a given census (v) to the next census (T + N), and data required is the number of people by age and gender in two consecutive censuses.

Advantages:

- Give good results on internal migration (such as the method of vital statistics).