Comorbidities | HR | 95% CI | P value |
Age ≥80 years+ventilation >48 hours | 1.15 | 1.05 to 1.27 | <0.001 |
Age ≥80 years+diabetes mellitus | 1.25 | 1.14 to 1.37 | <0.001 |
Age ≥80 years+previous myocardial infarction | 0.92 | 0.80 to 1.05 | <0.001 |
Age ≥80 years+chronic limb-threatening ischaemia | 1.19 | 0.97 to 1.46 | <0.001 |
Age ≥80 years+chronic kidney disease | 1.13 | 1.03 to 1.25 | <0.001 |
Age ≥80 years+dementia | 1.77 | 1.52 to 2.06 | <0.001 |
P value ‘for comparisons of patients in all groups’.