Population size, number of deaths and proportion who died in the derivation and validation cohorts, by procedure category
| Cohort | CABG | AVR | CABG + AVR | |||
|---|---|---|---|---|---|---|
| Population size | No. (%) of patients who died within 30 days | Population size | No. (%) of patients who died within 30 days | Population size | No. (%) of patients who died within 30 days | |
| Derivation cohort | ||||||
| FY2017 | 6734 | 105 (1.56) | 966 | 22 (2.28) | 759 | 23 (3.03) |
| FY2018 | 6701 | 128 (1.91) | 1004 | 11 (1.10) | 751 | 23 (3.06) |
| Overall | 13 435 | 233 (1.73) | 1970 | 33 (1.68) | 1510 | 46 (3.05) |
| Validation cohorts | ||||||
| FY2015–FY2016 | 13 447 | 208 (1.55) | 1946 | 26 (1.34) | 1601 | 60 (3.75) |
| FY2019 | 6430 | 89 (1.38) | 777 | 10 (1.29) | 555 | 20 (3.60) |
Note: AVR = aortic valve replacement, CABG = coronary artery bypass graft, FY = fiscal year.