Table 2

Summary of linked PARAMEDIC trial patients to the respective registry databases

Data sourceDatasetNumber of linked recordsNumber of linked patients (linkage rate)*Number of matched patients (match rate)*
NHSDHES Inpatient12 8751617 (67.4)771 (32.2)
HES Critical Care545433 (18.1)354 (14.8)
HES A&E64342186 (91.2)1927 (80.4)
Overall19 8542277 (95.0)2079 (86.7)
ICNARCCMP435410 (17.1)407 (17.0)
NCAPMINAP244218 (9.1)182 (7.6)
PCI153128 (5.3)101 (4.2)
  • *Percentage is calculated using the number in the column divided by 2398 linkage patients.

  • A&E, accident and emergency; CMP, Case Mix Programme; HES, Hospital Episodes Statistics; ICNARC, Intensive Care National Audit and Research Centre; NCAP,National Cardiac Audit Programme; MINAP, Myocardial Ischaemia National Audit Project; NHS, National Health Service; PCI, Percutaneous Coronary Intervention; NHSD, NHS Digital.