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Table 6 Heuristics to identify post codes, with entirely fictitious examples, as they would appear in source records and CRIS output

From: Development and evaluation of a de-identification procedure for a case register sourced from mental health electronic records

  Algorithm to identify post codes < postcode>::= source postcode  
Source record Source postcode CRIS output
He lives at EN1 5SR EN1 5SR He lives at ZZZZZ
Lives at EN1. No… None Lives at EN1. No…
Lives at EN1 S5R None identified owing to typographic error Lives at EN1 S5R