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Table 1 General characteristics of the violent and control groups

From: Neurocognitive features in male patients with schizophrenia exhibiting serious violence: a case control study

 

Violent

Control

U

p

(n = 30)

(n = 24)

Mean (SD)

Mean (SD)

Age

44.1 (11.5)

40.3 (10.7)

297

0.273

 Years of education

13.1 (2.6)

14.3 (2.8)

279

0.151

 Age of onset (years)

25.7 (6.9)

24.4 (7.3)

308

0.360

 Duration of illness (years)

18.0 (12.6)

15.9 (11.8)

319

0.470

Mean dosage of antipsychotics

 Chlorpromazine equivalent dosage (mg/day)

845.63 (528.22)

725.77 (391.29)

325

0.541

 Mean dosage of anti-Parkinson drugs

    

 Biperiden equivalent dosage (mg/day)

0.66 (1.35)

0.88 (1.19)

310

0.294

Mean dosage of benzodiazepines

 Diazepam equivalent dosage (mg/day)

8.97 (12.56)

8.97 (8.61)

314

0.413

 PANSS positive score

17.03 (5.56)

16.95 (7.13)a

284

0.545

 negative score

20.20 (7.07)

18.38 (6.51)a

272

0.410

 general psychotic score

36.80 (9.95)

32.86 (11.51)a

232

0.114

 Substance abuse (yes:no)

8:22

3:21

 

0.310

  1. an = 21 (three subjects were not available.)