Click the 'Population' button at the top of the screen to get a summary of the population that has been selected in the currently filtered dataset.
Figure 91: Population button
This will pop up the 'View Population' window showing the Total Population figure for filtered population as well as the population figure broken down for each practice.
Figure 92: View Population Window
NOTE: If you are logged on as a practice, you will still see the Total Population figure, but you will only see the population for the practice which you have logged on as.