Table 1 Sample demographics.

From: Inflammation and cognition in severe mental illness: patterns of covariation and subgroups

 

SZ (N = 343)

BD (N = 289)

HC (N = 770)

p-value

Group comparisons

Age

30.2 (10.2)

32.8 (11.5)

32.9 (9.1)

p < 0.001

SZ < HC, BD

Sex (m/f)

188/155

114/175

423/347

p < 0.001

SZ, HC ~ BD

Education (years)

12.3 (2.3)

13.6 (2.2)

14.5 (2.2)

p < 0.001

SZ < BD < HC

WASI IQ (2-subtests)

101 (13.6)

109 (11.8)

113 (10.4)

p < 0.001

SZ < BD < HC

BMI (kg/m2)

26.3 (5.5)

25.9 (4.6)

24.7 (3.7)

p < 0.001

SZ, BD > HC

CRP

3.3 (3.5)

2.7 (3.0)

2.2 (2.7)

p < 0.001

SZ > HC, BD

PANSS Negative

13.4 (5.8)

8.4 (3.4)

 

p < 0.001

SZ > BD

PANSS Positive

9.8 (4.2)

5.8 (2.8)

 

p < 0.001

SZ > BD

PANSS Disorganized

5.6 (2.6)

4.3 (1.6)

 

p < 0.001

SZ > BD

PANSS Excited

5.7 (2.1)

5.2 (1.6)

 

p < 0.001

SZ > BD

PANSS Depressed

8.3 (3.3)

7.7 (2.8)

 

ns

-

YMRS

4.3 (4.8)

3.4 (4.8)

 

ns

-

GAF Symptom

45.1 (13.1)

57.9 (11.2)

 

p < 0.001

BD > SZ

GAF Function

45.4 (13.0)

55.8 (13.1)

 

p < 0.001

BD > SZ

Age at onset

23.8 (8.6)

25.2 (9.5)

 

ns

-

Duration of illness (years)

6.7 (8.0)

7.4 (9.2)

 

ns

-

Antipsychotics, DDD

1.0 (0.9)

0.4 (0.7)

 

p < 0.001

SZ > BD

Antidepressants, DDD

0.4 (0.8)

0.4 (0.8)

 

ns

-

Antiepileptics, DDD

0.1 (0.2)

0.3 (0.5)

 

p < 0.001

BD > SZ

Lithium, DDD

0.0 (0.1)

0.2 (0.5)

 

p < 0.001

BD > SZ

Total, DDD

1.5 (1.4)

1.3 (1.2)

 

ns

-

  1. Presented are means and standard deviations and results from pairwise comparisons.
  2. HC healthy controls, SZ schizophrenia, BD bipolar disorder, WASI Wechsler Abbreviated Scale of Intelligence, BMI body mass index, CRP C-reactive Protein, PANSS Positive and Negative Syndrome Scale, YMRS Young Mania Rating Scale, GAF Global Assessment of Functioning scale, DDD defined daily dosage.