Table 1 Sample characteristics for the three groups: healthy control subjects (CON), clinical high risk subjects (CHR-P) and first episode psychosis patients (FEP).

From: Natural Language Processing markers in first episode psychosis and people at clinical high-risk

 

CON

CHR-P

FEP

Group difference

Sample size

13

25

16

N/A

Age (years)

26.5 ± 5.2

25.1 ± 4.8

24.5 ± 3.7

P = 0.38

Sex (M)

8 (61.5%)

15 (62.5%)

13 (81.3%)

P = 0.33

No. on antipsychotic medication

0

4

6

P = 0.031

Years in education

18.4 ± 4.2

13.0 ± 2.8

13.3 ± 1.9

P < 0.001

WRAT IQ

115.6 ± 5.2

103.3 ± 11.8

99.8 ± 15.0

P = 0.0019

Digit span

20.7 ± 4.1

17.0 ± 3.6

13.3 ± 4.5

P < 0.001

TLI total

0.37 ± 0.51

1.8 ± 1.4

3.5 ± 2.9

P < 0.001

TLI positive

0.37 ± 0.51

1.4 ± 1.3

2.9 ± 3.0

P = 0.0029

TLI negative

0 ± 0

0.27 ± 0.61

0.58 ± 0.86

P = 0.055

  1. We note that age information was missing for two participants: one CHR-P subject and one FEP patient and sex information was missing for one CHR-P subject. Results are reported as the mean average and standard deviation where appropriate. Group differences were calculated using a 1-way ANOVA. WRAT IQ, digit span, TLI and education information were missing for one CHR-P subject.
  2. TLI Thought and Language Index, WRAT IQ Wide Range Achievement Test Intelligence Quotient.
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