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This graph will show patients that have an IHI recorded and, of that group, patients that the clinical system has detected have a PCEHR.
IHI not recorded = no IHI has been recorded for this patient
IHI recorded and PCEHR exists = Patient has an IHI and a PCEHR has been set up either by or for the patient
IHI recorded and PCEHR does not exist = Patient has an IHI but no PCEHR has been setup
IHI recorded and PCEHR unknown = Patient has an IHI but the clinical system has not been able to establish if the PCEHR exists.