Table 1.

Item frequencies for Psychosis Screening Questionnaire in non-attenders with probable SMD (n = 61)

	Psychosis Screening Questionnaire item	Number (%)
Hypomania
Introductory question	Have there been times when you felt very happy indeed without a break for days on end?	20 (32.8)
First key question	Was there an obvious reason for this?	6 (9.8)
Second key question	Did your relatives or friends think it was strange or complain about it?	8 (13.1)
Thought insertion
Introductory question	Have you ever felt that your thoughts were directly interfered with or controlled by some outside force or person?	24 (39.3)
First key question	Did this come about in a way that many people would find it hard to believe, e.g. through telepathy?	16 (26.2)
Paranoia
Introductory question	Have there been times when you felt that people were against you?	27 (44.3)
First key question	Have there been times when you felt that people were deliberately acting to harm you or your interests?	28 (45.9)
Second key question	Have there been times when you felt that a group of people was plotting to cause you serious injury or harm?	26 (43.3)
Strange experiences
Introductory question	Have there been times when you felt that something strange was going on?	24 (43.3)
First key question	Did you feel it was so strange that other people would find it very hard to believe?	19 (31.2)
Hallucinations
Introductory question	Have there been times when you heard or saw things that other people couldn’t?	26 (43.3)
First key question	Did you at any time hear voices saying quite a few words or sentences when there was no one around who might account for it?	28 (46.7)
	Any psychotic symptom	45 (76.4)
	Yes to any introductory question	41 (68.3)
	Yes to first key question	38 (64.4)
	Yes to key question(s) highest levela	37 (61.7)

^aSecond key question for hypomania or paranoia, or first key question for the other symptoms