Fig. 2From: Prevalence of chronic kidney disease in the Lazio region, Italy: a classification algorithm based on health information systemsPercentage contribution of regional health information systems to chronic kidney disease cases identification. ^TER: Ticket Exemption Registry; * PHARM: Drug Dispensing Registry; °OSSIS: Outpatient Specialist Service Information System; §HDR: The Hospital Discharge RegistryBack to article page