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Table 1 Comparisons between the schizophrenia patients and healthy controls in the investigated tobacco dependence parameters

From: Nicotine dependence in Croatian male inpatients with schizophrenia

  Schizophrenia patients (n = 182) Healthy controls (n = 280) U / X2(df) P
FTND total (mean (SD)) 5.60 (2.312) 4.98 (2.690) 21,911 .010
FTND item 1 (mean (SD)) 2.07 (1.044) 1.59 (1.027) 17,951 .000
FTND item 2 (proportions of yes answers) 40.7% 60% 16.542 (1) .000
FTND item 3 (proportions of yes answers) 70.3% 72.1% 0.178 (1) .673
FTND item 4 (mean (SD)) 1.55 (.857) 1.17 (.825) 19,227 .000
FTND item 5 (proportions of yes answers) 47.8% 38.9% 3.556 (1) .060
FTND item 6 (proportions of yes answers) 40.1% 60.7% 18.782 (1) .000
  1. FTND Fagerstrom Test for Nicotine Dependence, U Mann Whitney test, X2(df) Chi-square test and degrees of freedom; Significant P values are highlighted in bold