Table 1.

A Developmental Clinical Staging Model—preliminary structure for further discussion.

	Psychiatric symptoms persisting for >3 months	Functional impairment	Rapid or significant deterioration in function	Risk to self or others	Greater likelihood of discrimination
Stage 1	Yes	No	No	No	If any feature is “yes,” consider whether clinical stage has been underestimated
Stage 2	Yes or	Yes or	Yes	No
Stage 3	Yes and	Yes and	Yes and	No
Stage 4	Yes	Yes	Yes	Yes