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

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%