Total cases with each demographic data point collected by Out-of-Hospital Cardiac Arrest Outcomes (OHCAO) project
| National HealthService number | Surname | Forename | Date of birth | Postcode | ||
| Total OHCAO cases with data point (% of total 28 729 cases) | 9510 (33.1%) | 24 814 (86.4%) | 24 686 (85.9%) | 24 956 (86.9%) | 15 017 (52.3%) | |
| Total OHCAO sample cases with data point (% of total 3120 cases) | 989 (31.7%) | 2699 (86.5%) | 2693 (86.3%) | 2700 (86.5%) | 1626 (52.1%) | |
| Match status (% of sample cases with specified data point) | Total matched | 989 (100%) | 2506 (92.8%) | 2505 (93.0%) | 2408 (89.2%) | 1566 (96.3%) |
| Auto match | 979 (99.0%) | 2070 (76.7%) | 2070 (76.9%) | 2070 (76.6%) | 1364 (83.9%) | |
| Manual match | 10 (1.0%) | 436 (16.2%) | 435 (16.2%) | 338 (12.5%) | 202 (12.4%) | |
| No match | 0 (0.0%) | 193 (7.2%) | 188 (7.0%) | 292 (10.8%) | 60 (3.7%) | |