Table 3

Item-scale correlations and Cronbach's α value

HADS items
HADS
HADS depression
HADS anxiety
Cronbach's α (if item deleted) for the total HADS

1 (anxiety)
0.696
0.521
0.719
0.873
2 (depression)
0.661
0.748
0.434
0.875
3 (anxiety)
0.625
0.372
0.743
0.877
4 (depression)
0.691
0.765
0.469
0.873
5 (anxiety)
0.699
0.484
0.762
0.873
6 (depression)
0.755
0.804
0.544
0.870
7 (anxiety)
0.645
0.459
0.687
0.875
8 (depression)
0.679
0.720
0.493
0.874
9 (anxiety)
0.688
0.521
0.705
0.873
10 (depression)
0.519
0.665
0.261
0.884
11 (anxiety)
0.462
0.215
0.608
0.885
12 (depression)
0.669
0.782
0.415
0.874
13 (anxiety)
0.582
0.333
0.702
0.878
14 (depression)
0.513
0.540
0.375
0.882

HADS, Hospital Anxiety and Depression Scale, bold: greater values in item-scale correlations.

Michopoulos et al. Annals of General Psychiatry 2008 7:4   doi:10.1186/1744-859X-7-4