Table 2.

Notation and calculation of the criteria

Sets
N:	Set of stroke care networks
Sn:	Set of hubs in stroke care network n
Pn:	Set of spokes in stroke care network n
Parameters
dp, s:	Driving distance from spoke p to hub s
$P_n^{\prime }:$	Number of people supplied by stroke care network n
Formula	Criterion description
$C{1}_n=\frac{{\sum }_{p\in P_n}Mi{n}_{s\in S_n}\left\{d_{p,s}\right\}}{\left|P_n\right|}$	Average travel distance from a spoke to its closest hub within a network n, in kilometers
$C{2}_n=\frac{P_n^{\prime }}{\left|S_n\right|}$	Average number of inhabitants per hub in network n
$C{3}_n=\frac{\left|S_n\right|}{\left|P_n\right|}$	Ratio of assigned hubs to spokes within network n