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Table 1 Demographic data and clinical characteristics of the schizophrenic group with a high SANS score, the schizophrenic group with a low SANS score, and the control group as well as significance of results

From: Neuropsychological and cerebral morphometric aspects of negative symptoms in schizophrenia: negative symptomatology is associated with specific mnestic deficits in schizophrenic patients

Demographic data/clinical characteristics Schizophrenics high SANS-score Schizophrenics low SANS-score Controls  
  Mean SD Mean SD Mean SD F-value
Age (in years) 27,90 6,03 30,40 7,78 28,22 5,83 0,53
School education (in years) 12,30 1,25 12,20 1,32 12,13 1,50 0,06
Sex (female/male) 7/3   5/5   22/10   1,301
Age of onset of clinical symptoms (in years) 24,22 3,80 26,10 6,06    0,63
Duration of schizophrenia (in months) 49,78 54,48 58,90 51,31    0,03
Number of psychotic episodes 2,11 2,42 2,00 2,00    0,30
Total amount of time hospitalized for schizophrenia (in weeks) 19,11 19,66 24,80 27,77    0,01
BPRS 45,50 16,86 27,60 8,57    7,36**
Positive family history for psychiatric disorders in 1st and 2nd grade dependant 8   10     4,21
Chlorpromazine-equivalents 10   10     0,81
  1. 1Pearson’s Chi-Square.
  2. (Spearman rank correlation, * p ≤0,05, ** p ≤0,01).