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Table 5 The relationship between psychiatric disorders and P300 wave amplitude and latency

From: Study of attention measured by event-related potential as a predictive factor of violence among patients with schizophrenia and substance use disorder

 SUD pt. (n= 32)Dual diagnosis pt. (n= 16)Schizophrenia pt. (n= 38)KWχ2P
P300 amplitude
 Min.–max.2.90–51.07.90–40.2011.80–65.3029.415*< 0.001*
 Mean ± SD18.18 ± 12.9123.39 ± 9.7236.34 ± 11.74
 Median14.2521.2037.55
Sig. bet. grop.P1 = 0.052, P2 < 0.001*, P3 < 0.001*  
P300 latency
 Min.–max.232.23–553.35263.80–923.10156.90–825.3038.637*< 0.001*
 Mean ± SD367.05 ± 80.98650.18 ± 158.02658.06 ± 175.0
 Median357.55667.05699.65
Sig. bet. grop.P10 < 0 .001*, P20 < 0.001*, P30 = 0.384  
  1. KW chi-square test value for Kruskal Wallis test, P1P value for Mann Whitney test for comparing between SUD pt. and dual diagnosis pt., P2P value for Mann Whitney test for comparing between SUD pt. and schizophrenia pt., P3P value for Mann Whitney test for comparing between dual diagnosis pt. and schizophrenia pt., P10P value for Mann Whitney test for comparing between SUD pt. and dual diagnosis pt., P20P value for Mann Whitney test for comparing between SUD pt. and schizophrenia pt., P30P value for Mann Whitney test for comparing between dual diagnosis pt. and schizophrenia pt.
  2. *Statistically significant at P ≤ 0.05