CPRD GOLD linked Hospital Episode Statistics Patient Reported Outcomes Measures (PROMs) data covers common elective surgical procedures performed in NHS England including groin hernia operations, hip replacements, knee replacements and varicose vein operations. The programme covers over 300 NHS hospitals and Independent Sector Providers in England that undertake elective operations. The purpose of PROMs is to capture patients’ own assessments of their health and health-related quality of life, shortly before and some months after surgery. Patient questionnaires administered comprise a disease-specific instrument, a generic instrument and a series of additional questions about the patient’s health and symptoms. Note, mandatory varicose vein surgery and groin-hernia surgery national PROMs collections ended on 1 October 2017.