Summary of the demographics of the trajectories and the trajectory ranks for characteristics
| Trajectory 1 | Trajectory 2 | Trajectory 3 | Trajectory 4 | |
| Demographics | ||||
| Age | 70–79 and ≥80 | 70–79 and ≥80 | 60–69 and 70–79 | 60–69 and 70–79 |
| Gender | Male | Male | Male | Male |
| Comorbidity | Solid tumour, CVD/TIA, COPD | Solid tumour, CVD/TIA, dementia | Solid tumour, CVD/TIA, COPD | Solid tumour, CVD/TIA, COPD |
| Type of ICU | Medical ICU | Surgical ICU | Surgical ICU | Surgical ICU |
| Reason for ICU admission | Respiratory and cardiovascular | Respiratory and cardiovascular | Respiratory and cardiovascular | Respiratory and cardiovascular |
| Ranks for characteristics | ||||
| Medical admission | First | Second | Third | Fourth |
| Scheduled surgery | Fourth | Third | Second | First |
| APACHE II | First | Second | Fourth | Third |
| Vasopressor infusions | Second | First | Third | Fourth |
| Renal replacement therapy | Third | First | Fourth | Second |
| Neuromuscular blockade | Second | First | Third | Fourth |
Representative demographics with more than half of the patients on each trajectory, except age on trajectory 4, are shown in the table. Rank-order of trajectories was determined by the comparison of proportion of variable within each trajectory. Trajectories are ordered from lowest (fourth) to highest (first) rank values.
APACHE Ⅱ, Acute Physiology and Chronic Health Evaluation Ⅱ; COPD, chronic obstructive pulmonary disease ; CVD, cardiovascular disease; ICU, intensive care unit; TIA, transient ischemic attack.