Table 2.

Classifications of level of clinical care provided to patients

Level	Classification
0	Patients whose needs can be met through normal ward care in an acute hospital.
1	Patients at risk of their condition deteriorating, or those recently relocated from higher levels of care whose needs can be met on an acute ward with additional advice and support from the critical care team.
2	Patients requiring more detailed observation or intervention including support for a single failing organ system or postoperative care, and those stepping down from higher levels of care.
3	Patients needing monitoring and support for two or more organ systems one of which may be basic or advanced respiratory support.

From Comprehensive Critical Care, DH, 2000 (22)