Table 1 Demographic and clinical characteristics of the study groups.

From: The stress-vulnerability model on the path to schizophrenia: Interaction between BDNF methylation and schizotypy on the resting-state brain network

Variable

HC (N = 101)

UHR (N = 46)

P-value

Sex, male/female, No.

48/53

31/15

0.032

Age, mean (SD), y

21.2 (2.8)

20.9 (4.2)

0.629

Educational level, Noa

  

0.018

High school attendances

9

13

 

High school graduates

13

8

 

College or university undergraduates or dropouts

66

19

 

College graduates

4

1

 

University graduates

9

5

 

Employment statusb

  

0.151

Employed

3

2

 

Student

76

20

 

Unemployed

10

6

 

Marital status, single/married

100/1

46/0

0.630

SIPS score, mean (SD)c

Positive symptoms

—

11.7 (4.0)

 

Negative symptoms

—

12.5 (5.9)

 

Disorganization symptoms

—

3.6 (2.6)

 

General symptoms

—

6.8 (4.0)

 

Antipsychotic medications

Naïve/medicated, No.

—

31/15

 

Chlorpromazine equivalent dose,d mean (SD), mg/d

—

176.1 (115.4)

 
  1. Abbreviations: HC healthy controls, SD standard deviation, SIPS structured interview for prodromal syndromes, UHR ultra-high risk for psychosis.
  2. aHigh school, years 10–12; College, years 13–14; University, years 13–16.
  3. bEmployment status data were available for 89 HC and 28 UHR participants.
  4. cSIPS data were available for 44 UHR participants.
  5. dChlorpromazine equivalent dose was derived from Kroken et al.40.
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