Etoricoxib Prescribing Patterns and Adverse Events of Interest in Primary Care in the United Kingdom (MK-0663-162 AM1)

Inclusion Criteria: * All patients in the MHRA's Full Feature GPRD (FF-GPRD) who have at least one electronic outpatient prescription record for etoricoxib issued by a General Practitioner during the period (April 1, 2002 to December 31, 2015) at the date of query execution against the FF-GPRD data warehouse. Exclusion Criteria: * Not registered in a GPRD-contributing practice that had continuously collected data deemed to be 'up-to-standard' for research purposes from 1 April 2002 through to 31 December 2015. * Never registered as a permanent patient of a General Practitioner in the practice * Registration details were not acceptable (i.e. incomplete data or logically implausible dates) * Not registered with a General Practitioner for at least 365 days before the date that the patient's first etoricoxib prescription was recorded in the GPRD