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Table 3 Clinical characteristics of schizophrenia and psychiatric history in cannabis users and non-users

From: Cannabis and schizophrenia: characterisation of a risk factor in a sample of Moroccan patients hospitalised for psychosis

  Non-users of cannabis Cannabis users P
Age at diagnosis, mean (SD) 30.5 (6.8) 21.2 (9,3) 0.0026
History of hospitalisation, n (%) 16 (61.5) 46 (66.6) 0.5033
Annual hospitalisations
  Average number (DS) 3.7 (2.5) 4.3 (3.3) 0.6701
  Average duration (days ± SD) 31.6 (7.8) 29.2 (6.0) 0.5428
Reasons for hospitalisation, n (%)    0.1037
  Behavioural problems 17 (65.3) 31 (44.9)  
  Suicidal threat 0 (0) 7 (10.1)  
  Addictive behaviour 3 (11.5) 16 (23.1)  
  Psychotic relapse 20 (76.9) 58 (84.0)  
  Other 10 (38.4) 25 (36.2)  
Family history, n (%)
PANSS score, average (DS)
  Positive scale 18 (4.3) 39 (6.6)  
  Negative scale 29 (7.8) 41 (8.0)  
  General psychopathology scale 67 (12.6) 102 (13.1)  
  Total score (/210) 104 (8.2) 181 (15.4) 0.0001
CRDPSS score, average (SD)
  Hallucinations 1 (0.0) 3 (1.6)  
  Delusional ideas 0 (0.0) 2 (0.7)  
  Disorganised speech 1 (1.2) 4 (0.0)  
  Abnormal psychomotor behaviour 2 (0.3) 3 (1.2)  
  Negative symptoms 2 (1.3) 3 (1.3)  
  Cognitive deficit 1 (0.8) 2 (0.8)  
  Depression 2 (1.6) 4 (0.6)  
  Mania 1 (1.2) 3 (1.2)  
  Total score (/32) 10 (3.4) 25 (4.7) 0.0021
  1. Under the term “Other,” we have grouped the reasons: somatic complaints, delusions, anxiety, and sudden mutism
  2. SD Standard deviation