Table 1 Demographics, general cognition, and clinical data.

From: Thalamo-cortical circuits during sensory attenuation in emerging psychosis: a combined magnetoencephalography and dynamic causal modelling study

 

HC

CHR-P

FEP

Group effecta

Post-hoc comparisons

Number of participants

48

109

23

  

Age: years (SD)

22.8 (3.6)

22.0 (4.5)

23.2 (3.5)

F(2,62.6) = 1.2 p = 0.31

 

Gender: male/female (% male)

15/33 (31.2)

28/81 (25.7)

14/9 (60.9)

χ(2) = 10.9, p = 0.004

FEP > HC: p = 0.017

FEP > CHR-P: p < 0.001

Education: years (SD)

16.7 (3.0)

15.3 (3.1)

15.4 (3.1)

F(2,56.4) = 3.8, p = 0.029

CHR-P < HC: p = 0.021

BACSb: mean (SD)

 Verbal memory

52 (8.3)

-0.33 (1.3)

NA

Not significant

 

 Digit sequencing

21 (2.7)

-0.08 (1.4)

NA

Not significant

 

 Token motor

81 (11.4)

-1.03 (1.3)

NA

F(1,117.3) = 31.3, p < 0.001

CHR-P < HC

 Verbal fluency

58 (13.2)

0.01 (1.3)

NA

Not significant

 

 Symbol coding

74 (11.9)

-0.54 (1.1)

NA

F(1,101.7) = 8.7, p = 0.004

CHR-P < HC

 Tower of London

19 (1.8)

-0.16 (1.4)

NA

Not significant

 

 Composite score

305 (24.4)

-0.57 (1.4)

NA

F(1,121.9) = 9.6, p = 0.002

CHR-P < HC

CAARMS scoresc: mean (SD)

 Unusual Thought Content

0.0 (0.1)

5.6 (7.5)

NA

  

 Non-bizarre Ideas

0.3 (1.7)

10.1 (8.5)

NA

  

 Perceptual Abnormalities

0.3 (1.1)

8.7 (6.4)

NA

  

 Disorganized Speech

0.0 (0.3)

4.6 (5.4)

NA

  

 Total CAARMS severity

0.7 (2.4)

29.0 (18.3)

NA

  

 SPI-A severityd: mean (SD)

0.0

11.2 (11.9)

NA

  

GAF: mean (SD)

87.8 (6.4)

57.7 (13.7)

39.5 (14.6)

F(2,56.0) = 246.3, p < 0.001

FEP < HC: p < 0.001

CHR-P < HC: p < 0.001

FEP < CHR-P: p < 0.001

 GF-role: mean (SD)

8.6 (0.8)

7.4 (1.2)

NA

  

 GF-social: mean (SD)

8.8 (0.4)

7.5 (1.2)

NA

  

PANSS: mean (SD)

 Positive

NA

NA

17.9 (7.0)

  

 Negative

NA

NA

14.7 (8.6)

  

 Cognitive

NA

NA

19.8 (9.2)

  

 Excitement

NA

NA

8.6 (4.6)

  

 Depression

NA

NA

11.4 (5.8)

  

 Total score

NA

NA

72.4 (27.8)

  

DSM-IV/SCID-IP

 Diagnostic categories of FEP group participants

Schizophrenia (n = 4), Schizophreniform disorder (n = 3), Psychotic Disorder NOS (n = 7), Mood Disorders with Psychotic Symptoms (n = 7), Schizoaffective disorder (n = 1), Delusional Disorder (n = 1)

Medicatione: n (%)

 None

48 (100)

57 (52)

4 (17)

  

 Anti-depressants

0

42 (39)

12 (52)

  

 Mood stabilizers

0

5 (5)

0

  

 Anti-psychotics

0

2 (2)

12 (52)

  

 Other

1 (2)

18 (17)

6 (26)

  
  1. BACS Brief Assessment of Cognition in Schizophrenia, CAARMS Comprehensive Assessment of At-Risk Mental States, HC healthy controls, CHR-P clinical high-risk for psychosis, FEP first-episode psychosis, GAF global assessment of functioning, GF global functioning, PANSS Positive and Negative Symptom Scale, SPI-A Schizophrenia Proneness Instrument, Adult version, SD standard deviation of the mean NA not assessed.
  2. aExcept for ‘gender’ statistical testing, which is based on Chi-Square tests, all other tests are based on one-way Welch ANOVAs (alpha = 0.05, two-sided, post-hoc Games-Howell-corrected for multiple comparisons).
  3. bBACS scores for CHR-P group were standardized to control group data, controlled for gender. HC group data represents raw scores.
  4. cCAARMS scores: entries represent global scores (max 6) multiplied by frequency scores (max 6).
  5. dSPI-A severity scores: entries represent sum score of all items.
  6. eMultiple ratings possible.