DSE is the method used to estimate the total population in a sample area by considering the number of people recorded by:
- A: the census
- B: the Census Coverage Survey, and
- C: both the census and Census Coverage Survey
The dual system estimate (the estimate of the total population including people missed by both the census and the CCS) is calculated by A*B/C (A times B, divided by C). Dual System Estimation is also known as capture-recapture.