Table 2.

Notation for piece-wise linear approximation of IVT in-hospital delay

αn	Slope of the n th tangent line of IVT in-hospital delay.
βn	Intersect of the n th tangent line of IVT in-hospital delay.
bj, IVT	In-hospital delay for IVT at stroke centre j.
zij	Total in-hospital delay for IVT for demand i in stroke centre j.