Table 1 Sociodemographic characteristics, clinical symptoms, and LASSO variables for schizophrenia, bipolar disorder, and community samples.

Age

47.4 (11.3)

45.4 (10.8)

46.2 (10.3)

0.52

0.598

Education

12.9 (1.7)

14.5 (1.9)

14.8 (2.1)

24.09

<0.001

Race (%)

6.42

0.78

 Asian

5.5

2.0

8.0

 Black

32.0

23.0

25.8

 Other

5.5

10.5

8.6

 Pacific Islander

0

2.0

1.0

 Native American

0

0

1.0

 White

57.0

62.5

55.6

Sex (%)

0.32

0.848

 Male

65.3

60.5

64.2

 Female

34.7

39.5

35.8

Positive symptoms

2.4 (1.2)

1.2 (0.4)

1.1 (0.2)

97.51

<0.001

Expressive symptoms

1.0 (0.9)

0.5 (0.7)

0.3 (0.6)

25.89

<0.001

Motivation symptoms

1.7 (0.9)

1.3 (0.8)

1.1 (0.9)

10.90

<0.001

Maina symptoms

5.9 (5.5)

3.7 (4.8)

1.6 (2.2)

31.78

<0.001

Social Isolation^a

0.3 (0.7)

0.2 (0.7)

0.3 (0.9)

1.59

0.213

Loneliness^a

44.4 (9.6)

49.1 (10.8)

47.0 (11.7)

2.71

0.067

Depression^a

7.3 (5.4)

8.2 (6.2)

4.1 (4.7)

16.52

<0.001

Social Cognition^a

−0.9 (1.4)

0.2 (1.0)

0.4 (1.1)

28.01

<0.001

Nonsocial Cognition^a

37.1 (14.4)

42.3 (11.5)

47.0 (11.5)

15.57

<0.001

Social Avoidance^a

10.5 (13.8)

12.3 (19.9)

0.02 (22.5)

10.48

<0.001

Social Anhedonia^a

6.1 (3.4)

6.8 (4.5)

7.1 (5.1)

1.10

0.344