If you use assistive technology (such as a screen reader) and need a
version of this document in a more accessible format, please email firstname.lastname@example.org.
Please tell us what format you need. It will help us if you say what assistive technology you use.
PID diagnoses made in GP settings are collated from anonymised, patient-level medical records of a representative sample of patients registered with GPs in England. Hospital inpatient admissions are extracted from hospital episode statistics (HES).