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Table 6 Item loading on nine components (non-clinical sample only), and significant differences between the non-clinical sample (n = 1276) and psychotic sample(n = 126)

From: Evaluation of reliability and validity of the Persian version of Peters et al. delusions inventory (PDI-40) in iranian non-clinical and clinical samples

PDI-40 Items

F1

F2

F3

F4

F5

F6

F7

F8

F9

ITEM 1***

  

0.686

      

ITEM 2***

  

0.639

      

ITEM 3

       

0.735

 

ITEM 4***

  

0.667

      

ITEM 5*

  

0.428

      

ITEM 6***

 

0.623

       

ITEM 7**

        

0.708

ITEM 8

 

0.644

       

ITEM 9***

 

0.512

       

ITEM 10***

      

0.438

  

ITEM 11*

 

0.742

       

ITEM 12

 

0.722

       

ITEM 13

 

0.635

       

ITEM 14***

      

0.760

  

ITEM 15**

 

0.437

       

ITEM 16***

0.723

        

ITEM 17***

0.606

        

ITEM 18***

0.572

        

ITEM 19***

0.615

        

ITEM 20***

        

0.495

ITEM 21

0.700

        

ITEM 22**

0.636

        

ITEM 23***

0.480

        

ITEM 24***

0.462

        

ITEM 25***

0.702

        

ITEM 26***

       

0.438

 

ITEM 27*

    

0.452

    

ITEM 28

    

0.483

    

ITEM 29

     

0.556

   

ITEM 30**

      

0.422

  

ITEM 31***

     

0.622

   

ITEM 32

     

0.314

   

ITEM 33

   

0.689

     

ITEM 34**

     

0.659

   

ITEM 35*

   

0.534

     

ITEM 36***

   

0.652

     

ITEM 37***

    

0.624

    

ITEM 38***

     

0.449

   

ITEM 39***

    

0.461

    

ITEM 40***

    

0.524

    
  1. Note: PDI = Peters et al. Delusions Inventory; F1-9 = components of PDI; F1 = grandiosity; F2 = persecution; F3 = control; F4 = depersonalization; F5 = catastrophic ideation and thought broadcast; F6 = negative self; F7 = suspiciousness; F8 = thought disturbance; F9 = ideation of reference
  2. Independent t-test between the psychotic and non-clinical samples on each item: Item (*) = P < 0.05*; P < 0.01**; P < 0.001***