Dual system estimation (DSE)

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.