*2.5. Performance Indicators*

Two primary indicators describing the performance of the dedicated network were considered, one for care processes and one for outcomes, using as dependent variables:


We used the following ICD-9-CM procedure codes to define PCI: 00.66, 36.01, 36.02, 36.05, 36.06 and 36.07. The Regional Hospital Information System reports the date, but not the exact time when procedures are performed so, for the purposes of this study, it was assumed that PCI was performed within 24 h if it was done on the day of admission to hospital.
