Table 1 Participants characteristics.

From: Psychotic-like experiences, polygenic risk scores for schizophrenia, and structural properties of the salience, default mode, and central-executive networks in healthy participants from UK Biobank

 

Variable

Units

Descriptor

Valid N

Demographics

Age

Years (SD)

62.18 (7.57)

3875

 

Sex

F, % females

2032 (52.44)

3875

PLEs

Presence of at least one

Yes (% yes)

134 (4.75%)a

2819

 

Persecutory delusions

Yes (% yes)

16 (0.57%)a

13:130b

 

Delusions of reference

Yes (% yes)

13 (0.46%)a

11:110b

 

Auditory hallucinations

Yes (% yes)

55 (1.95%)a

51:510b

 

Visual hallucinations

Yes (% yes)

79 (2.80%)a

70:700b

Brain MRI

Cortical thickness

mm Mean (SD)

2.40 (0.10)

3566

 

Grey matter volume

mm3 Mean (SD)

620,504.60 (55,712.52)

3868

 

Mean FA

Units (SD)

0.46 (0.02)

3174

  1. Note: complete data after quality control and exclusion criteria. SD = standard deviation. Brain MRI volumes are uncorrected for head size.
  2. aPercentages and rates were calculated exclusively on participants answering either “Yes” or “No” to PLEs (N = 2819).
  3. bDue to the relatively low frequencies of participants answering “Yes” to any PLEs, these participants were matched to those answering “No” using a ratio of 1:10 for each PLE for complete data (see “Methods” for more detail). Note that these sample sizes may vary for the different brain structural properties analyzed.
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