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Table 2 Comparison of general psychopathological parameters between 'anhedonic' and 'normal hedonic' schizophrenics

From: Anhedonia in schizophrenia and major depression: state or trait?

Psychopathological variables

'Normal hedonic' schizophrenics (n = 44)

'Anhedonic' schizophrenics (n = 36)

Z value

Negative dimension (SANS total score)

32.35 ± 11.63

37.86 ± 11.41

-2.69*

Affective flattening

9.45 ± 6.58

12.00 ± 6.57

-1.84

Alogia

3.25 ± 3.03

3.60 ± 2.47

-0.31

Avolition/apathy

7.94 ± 2.95

9.00 ± 2.85

-1.67

Anhedonia/asociality

12.00 ± 3.73

13.26 ± 3.38

-0.79

Positive dimension

10.61 ± 10.43

10.82 ± 9.64

-0.14

Hallucinations

3.64 ± 5.96

3.41 ± 4.99

0.19

Delusions

6.96 ± 6.53

7.41 ± 7.29

-0.78

Disorganised dimension

8.61 ± 6.41

12.89 ± 10.58

-2.67*

Bizarre behaviour

1.32 ± 2.32

2.20 ± 3.01

-1.41

Formal thought disorders

1.03 ± 1.97

4.82 ± 7.22

-3.14**

Attentional impairment

2.03 ± 2.34

2.56 ± 2.80

-0.55

Depression (CDSS total score)

3.87 ± 4.11

4.23 ± 3.57

-0.69

  1. Mean ± standard deviation (SD) and Mann-Whitney Z test values are reported.
  2. *P < 0.05; **P < 0.01.
  3. CDSS = Calgary Depression Scale for Schizophrenics; SANS = Scale for the Assessment of Negative Symptoms.