Fundamental concepts in demand and capacity

There are a number of fundamental concepts that underpin our understanding of demand and capacity. You may also be interested in our patient videos and training offer.

Case for change animation

This animation explores why demand and capacity modelling is an important tool for many people involved in providing services to patients.

Patients will wait longer to be seen if the variation in both demand and in capacity are not understood as well as the interplay between them.

Percentiles

Statistical Process Control (SPC)

Patients will wait longer to be seen if the waiting list size for a service is too big.

Ideal waiting list size

We have created a guide for commissioners to help sense check the demand and capacity work of others.

You may also be interested in the following tools and techniques in demand and capacity modelling which were first introduced by NHS Institute for Innovation and Improvement.

These are now hosted on the National Archives site: