Table 1

Frequency of psychotic-like symptoms
PSQ domain Weighted positive endorsement Number of respondents (unweighted)
Hypomania
Over the past year, have there been times when you felt very happy without a break for days on end? 10.7% 128
Was there an obvious reason for this? (No) 7.5% 89
Did your relatives or friends think it was strange or complain about it? 0.2% 2
Thought insertion
Over the past year, have you ever felt that your thoughts were directly interfered with or controlled by some outside force or person? 6.5% 78
Did this come about in a way that many people would find hard to believe, for instance through telepathy? 3.4% 41
Paranoia
Over the past year, have there been times when you felt people were against you? 18.4% 223
Have there been times when you felt that people were deliberately acting to harm you or your interests? 9.3% 112
Have there been times when you felt that a group of people were plotting to cause you serious harm or injury? 5.4% 65
Strange experiences
Over the past year, have there been times when you felt that something strange was going on? 8.1% 97
Did you feel it was so strange that other people would find it very hard to believe? 5.4% 65
Hallucinations
Over the past year, have there been times when you heard or saw things that other people couldn’t? 4.3% 52
Did you at any time hear voices saying quite a few words or sentences when there was no-one around that might account for it? 2.5% 30
Any psychotic symptom (yes to one or more probe questions) 29.7% 363
Met criteria based on secondary question(s) 12.3% 150

Soosay et al.

Soosay et al. BMC Psychiatry 2012 12:229   doi:10.1186/1471-244X-12-229

Open Data