The cohort component method takes each age group of the population and ages it over time, using survival rates in the following way:
- Collect information distributed by sex and age in 5-year age groups from ACS 1-yr. Since we do not have complete data in ACS 1-yr, we calculate the missing data using USCB, ACS 5-yr and 1-yr.
- Multiply the collected data of a given age group by survival rates in order to obtain the population still alive 5 years later. (Man aged 25-29 alive in 5 years would be 30-34 years old).