Skip to main content

Table 3 Inter-item correlation matrix based on polychoric correlations, pairwise deletion (n = 6622)

From: Is the Hospital Anxiety and Depression Scale (HADS) a valid measure in a general population 65–80 years old? A psychometric evaluation study

Items 1 2 3 4 5 6 7 8 9 10 11 12 13 14
1 1.000              
2 0.398 1.000             
3 0.586 0.374 1.000            
4 0.469 0.575 0.501 1.000           
5 0.640 0.405 0.752 0.542 1.000          
6 0.489 0.514 0.495 0.659 0.576 1.000         
7 0.588 0.445 0.511 0.557 0.561 0.568 1.000        
8 0.572 0.474 0.542 0.544 0.582 0.616 0.536 1.000       
9 0.628 0.377 0.699 0.495 0.676 0.470 0.529 0.552 1.000      
10 0.290 0.404 0.300 0.396 0.304 0.473 0.344 0.436 0.270 1.000     
11 0.641 0.351 0.518 0.443 0.551 0.482 0.581 0.527 0.559 0.330 1.000    
12 0.462 0.640 0.460 0.672 0.507 0.680 0.523 0.587 0.446 0.504 0.442 1.000   
13 0.617 0.368 0.684 0.484 0.674 0.510 0.556 0.572 0.719 0.358 0.594 0.458 1.000  
14 0.293 0.356 0.284 0.437 0.288 0.477 0.446 0.367 0.254 0.351 0.356 0.446 0.346 1.000