Table 1 Comparison of demographic data and Chapman scale scores for schizophrenia patients, first-degree relatives, and college students

From: Evidence of structural invariance across three groups of Meehlian schizotypes

Variable

Schizophrenia patients (n=196) mean (s.d.)

First-degree relatives (n=197) mean (s.d.)

College students (n=1724) mean (s.d.)

χ2/F

P

Gender (male/female)

101/95

84/113

645/1079

15.79

<0.001

Age (years)

43.31 (9.61)

61.72 (16.2)

18.81 (0.83)

5,916.53

<0.001

Education (years)

11.64 (2.62)

10.73 (3.57)

12.31 (0.73)

105.38

<0.001

PER

9.36 (7.95)

7.25 (7.69)

6.93 (5.85)

13.27

<0.001

MIS

10.87 (5.80)

8.72 (5.24)

12.01 (4.73)

42.46

<0.001

RSAS

16.22 (6.88)

12.20 (6.19)

8.17 (4.42)

277.74

<0.001

RPAS

24.74 (10.30)

21.46 (8.40)

15.45 (7.26)

166.70

<0.001

  1. Abbreviations: MIS, magical ideation scale; PER, perceptual aberration; RPAS, revised physical anhedonia scale; RSAS, revised social anhedonia scale.
  2. Higher scores indicate greater levels of the schizotypal trait.
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