Table 2

Variables to be extracted from GP practice management system

Patient static recordMedical data
Unique patient identifier (randomly generated and anonymised);
year of birth (date of birth cannot be extracted due to the risk of patient identification);
date registered as a patient.
Date of consultation;
medical card/GP visit card status at time of visit;
healthcare professional seen (coded to preserve anonymity);
consultation type (eg, general, immunisation, bloods);
diagnosis & pre-existing conditions (ICPC2 and/or ICD-10 codes);
medication prescribed (ATC codes).
  • ATC, Anatomical Therapeutic Chemical; GP, general practitioner; ICD-10, International Statistical Classification of Diseases and Related Health Problems - 10; ICPC2, International Classification of Primary Care-2.