Table 2 Adverse event severity levels
Level 0 | Did not reach patient |
Level 1 | No change in patient outcome |
Level 2 | Increased monitoring required; therapy changed/held/discontinued |
Level 3 | Additional labs or diagnostic tests were ordered; vital signs changed |
Level 4 | Reason for admission; prolonged length of stay |
Level 5 | Transfer to ICU; monitored bed required; invasive procedure required |
Level 6 | Patient death |
Recoding | levels 0–1 = mild severity |
|  | levels 2–3 = moderate severity |
|  | levels 4–6 = substantial severity |