How do the models work?
The models are based on calculating the mathematical relationships between demand, capacity (and hence activity) and waiting lists. In the versions available for browsing/download where parameters eg demand vary randomly, the models utilize random number generation based on a uniform distribution curve. The models have been modified to use other random number distributions eg normal distribution or Poisson distribution but these are not currently available for browsing/download. The spreadsheets are protected (for copyright purposes) and this does prevent user modification other than as permitted for normal use of the models.
Can the models work with real data?
Most of the current models available for browsing/download can not accept real data. Different versions of the models have been designed to accept real data but these are not available for distribution. The exception is the bed model – this needs profiles of number of admisions and their associated length of stay. The model is really designed to show the effect of variation and the danger of relying on averages in planning. Please be careful about using this model to plan your bed capacity – hospitals are complex adaptive systems!
Why can I not modify the spreadsheets?
The spreadsheets are protected (for copyright purposes) and this does prevent user modification other than as permitted for normal use of the models.
Can I use the models for free or will I be charged?
The models may be used without charge for personal use. The models may also be used without charge for presentations provided the speaker is not receiving a fee. If you wish to use the models commercially then please contact firstname.lastname@example.org to discuss if a fee is payable.