Table 5.

Annotation schema for identifying mentions of psychosis onset.

Attribute	Possible values	Description	Example
Time information	Past anchored	Referring to a definite past time	She started hearing voices at the age of 8
	Past not anchored	Referring to an indefinite past	History of having delusional beliefs
	Current	Related to the current presentation	Patient presenting with auditory hallucinations. This is clearly a first psychosis episode.
Value	YYYY-MM-DD; AGE-number-Y	String describing the actual date or age for past anchored mentions	2012; AGE8Y
Type	Symptom	Clearly defined positive psychosis symptoms	Hallucinations
	Diagnosis	Diagnoses related to schizophrenia	Paranoid Schizophrenia
	Non-specific	Vague clinical concepts indicative of psychosis	Strange behaviour