Age and Nationality: Two Variables That Challenge the Univocal Identification of People in the Health System of the Autonomous City of Buenos Aires.

The univocal identification of people is fundamental for the longitudinal monitoring of health status. The impossibility of all people to credit their identity via their identity document generates temporary records that make it difficult to record the continuity of care. This paper analyzes the Patient Index of the Ministry of Health of the Buenos Aires City and describes how the age and nationality variables influence the creation of temporary records.