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. 2013 Jul 11;13:71. doi: 10.1186/1472-6947-13-71

Table 6.

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

 
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