<qa>  What is the overall agreement between registry data and medical records?Quality assurance. It is compulsory to register all patients undergoing PCI in the participating countries. All registry data are routinely validated in the participating countries as part of routine registry function. Sites will be monitored according to a specific study monitoring plan. Data checks are part of the registries used and uses predefined rules for range and consistency with other data fields in the registry. Source data verification is part of routine registry maintenance by comparing the data to medical records. Overall agreement between registry data and medical records is 95 . 