Patient outcomes
| Overall cohort | Propensity score matched (PSM) cohort | |||||
|---|---|---|---|---|---|---|
| Transfer | Non-transfer | Point estimate* (95% CI) | Transfer | Non-transfer | Point estimate* (95% CI) | |
| Revascularisation | ||||||
| In-hospital invasive procedure (Cath, PCI or CABG) | 9100 (90.0) | 14 102 (46.4) | 1.94 (1.91 to 1.97) | 7517 (89.2) | 2562 (30.4) | 2.93 (2.84 to 3.04) |
| In-hospital revascularisation (PCI and/or CABG) only | 5743 (56.8) | 8062 (26.5) | 2.14 (2.09 to 2.20) | 4689 (55.6) | 1158 (13.7) | 4.05 (3.83 to 4.29) |
| Mortality | ||||||
| In-hospital | 261 (2.6) | 2105 (6.9) | 0.37 (0.33 to 0.42) | 240 (2.9) | 357 (4.2) | 0.67 (0.57 to 0.79) |
| 30 days | 316 (3.1) | 2683 (8.8) | 0.35 (0.31 to 0.40) | 292 (3.5) | 481 (5.7) | 0.60 (0.52 to 0.70) |
| 1 year | 671 (6.6) | 5592 (18.4) | 0.34 (0.31 to 0.37) | 631 (7.5) | 1064 (12.6) | 0.58 (0.52 to 0.64) |
| Long term† | 1358 (13.4) | 9401 (31.0) | 0.40 (0.38 to 0.42) | 1285 (15.3) | 1894 (22.5) | 0.65 (0.61 to 0.70) |
*Point estimate shown are relative risk (RR) for revascularisation and in-hospital mortality. Point estimate shown for 30-day, 1-year and long-term mortality are HRs. In both cases the non-transfer group is referent group.
†Median follow-up time of 3.5 years (min 1.5 years, max 5.5 years).
Cath, coronary angiography; CABG, coronary artery bypass grafting; PCI, percutaneous coronary intervention.