Results of the adjusted multilevel regression models for secondary analyses
| Subgroup | Patients | 90-day mortality OR (95% CI) |
| Entire cohort | 102 976 | 1.31 (1.22–1.40) |
| Dementia | 5156 | 0.96 (0.82–1.12) |
| Psychiatric conditions# | 26 006 | 1.21 (1.12–1.30) |
| Pre-existing cardiac conditions¶ | 36 379 | 1.22 (1.09–1.36) |
| Intensive care unit admission | 17 738 | 0.96 (0.82–1.12) |
#: post-traumatic stress disorder, schizophrenia, bipolar disorder and depression; ¶: myocardial infarction, heart failure and cardiac arrhythmias.