How are 'Number of Cancelled Operations' calculated in the Theatre Utilisation Session Details table?

To find the session details table, navigate to Surgery > Theatre Effectiveness > Utilisation and select the 'Session Details' button. 'No. of Cancelled Ops' is Column T.

"No. of Cancelled Ops" refers to the number of cancelled elective operations on the session list.
Please note cancelled operations will also be recorded in no. of elective ops (Column P).