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Table 2 Psychometrics properties and factor structure of the 12 item ISST among patients with schizophrenia only (N = 100)

From: Reliability, validity and factorial structure of the Arabic version of the international suicide prevention trial (InterSePT) scale for suicidal thinking in schizophrenia patients in Doha, Qatar

  Factor loadings    
  Current suicidal thinking Passive suicidal ideation Suicide contem-plation Mean SD Cronbach’s alpha if item deleted
Q1. Wish to die 0.72    0.41 0.68 0.91
Q3. Desire to make active suicide attempt 0.84    0.24 0.54 0.91
Q7. Control over suicidal action/acting out/delusions/ hallucinations or self-harm 0.81    0.24 0.54 0.91
Q8. Deterrents to active attempt 0.74    0.25 0.59 0.91
Q9. Reasons for contemplating attempt 0.72    0.32 0.68 0.92
Q11. Expectancy/anticipation by patient of actual attempt 0.73    0.21 0.55 0.91
Q12. Delusions/hallucinations of self-harm 0.80    0.21 0.51 0.91
Q4. Passive suicidal desire   0.80   0.23 0.47 0.92
Q5. Frequency of suicidal ideation   0.83   0.20 0.45 0.92
Q6. Attitude towards ideation/wish   0.76   0.19 0.45 0.91
Q2. Reason for living vs dying    0.92 0.42 0.62 0.93
Q10. Method: Specificity/planning of contemplated attempt    0.56 0.12 0.33 0.92
Cronbach’s alpha 0.92 0.82 0.48    
Eigenvalues 6.700 1.119 1.037    
Percentage of Variance explained 55.83% 9.33% 8.64%    
  1. Kaiser-Mayer-Olkins Sampling of Adequacy KMO = 0.837. Barttlet’s test, χ2 (66) = 795.64, p < 0.001