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Table 2 An example of the CRIS dictionary

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

ePJS Source fields  
First name Joe
**Middle name (blank)
Second name Bloggs
*Date of birth 20/08/1987
Trust ID 12–34–56
Post Code SW9 6TJ
**Nick Name (blank)
**Key Contact First Name (blank)
Key Contact Last Name O’Connell
CRIS PI Dictionary list derived from the source field above  
Joe  
Bloggs  
20/08/1987  
20/08/’87  
20–08–1987  
20–08–87  
20.08.1987  
20.08.87  
20.8.87  
20th Aug 1987  
20th Aug ‘87  
20th of August 1987  
20th of Aug 1987  
12–34–56  
123456  
12 34 56  
SW9 6TJ  
SW96TJ  
Connell  
  1. *There would be many more options of recording the date of birth; a non-exhaustive list is provided here.
  2. **The cells show no information was entered in these fields and hence are not included in the CRIS PI dictionary. Note that these fields are patient identifier fields that sometimes do not get filled in the source.