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Table 4 Concurrent, discriminant and convergent validity measures of the Arabic ISST

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

 

Statistical test

 

95% CI

p-value

Concurrent Validity: ISST total score with Module B total score

Pearson’s Correlation

0.64

(0.43, 0.78)

p < 0.001

Discriminant Validity:

ISST total score with Module B suicidality risk:

ANOVA

   

None (reference group)

EMM

0.59

(0.12, 1.05)

 

Low

EMM

2.71

(1.85, 3.57)

P = 0.004a

Moderate

EMM

6.57

(4.50, 8.65)

P = 0.28

High

EMM

9.67

(7.83, 1.50)

P = 0.01a

Convergent Validity:

ISST total score with CDSS total score

Pearson’s Correlation

0.61

(0.42, 0.73)

p < 0.001

ISST total score with PANSS total score

Pearson’s Correlation

0.43

(0.29, 0.57)

p < 0.001

  1. aCompared to the reference group with no suicidality. EMM: Estimated Marginal Mean of ISST total score. Sample used in the validity tests includes both groups, schizophrenia and control groups and the sample size is 199