Risk class (score level) | Derivation cohort (N=821 with full data; deaths=258) | Aintree validation cohort (N=290 with full data; deaths=94) | ISARIC validation cohort (N=14 231; deaths=4319) | |||
Mortality by risk class (%) | Proportion of deaths by risk class (%) | Mortality by risk class (%) | Proportion of deaths by risk class (%) | Mortality by risk class (%) | Proportion of deaths by risk class (%) | |
Low (0–1) | 6/163 (3.7%) | 6/258 (2.3%) | 3/35 (8.6%) | 3/94 (3.2%) | 128/2362 (5.4%) | 128/4319 (3.0%) |
Moderate (2) | 6/102 (5.9%) | 6/258 (2.3%) | 3/37 (8.1%) | 3/94 (3.2%) | 273/1879 (14.5%) | 273/4319 (6.3%) |
High (≥3) | 246/556 (44.2%) | 246/258 (95.3%) | 88/218 (40.4%) | 88/94 (93.6%) | 3917/9990 (39.2%) | 3917/4319 (90.7%) |
SOARS, SpO2, Obesity, Age, Respiratory rate, Stroke history.