Table 3.
Correlation of HADS items with its hypothesized subscales, overall HADS; and HADS subscales and overall HADS with emotional functioning and global quality of life scores
| HADS-A (anxiety subscale) | HADS-D (depression subscale) | HADS (Overall) | |
| Item number/Anxiety (HADS-A) | 1 | 0.72 | 0.92 |
| 1/I feel tense or wound up | 0.77 | 0.65 | 0.76 |
| 3/I get a sort of frightened feeling as if something awful is about to happen | 0.67 | 0.51 | 0.63 |
| 5/Worrying thought go through my mind | 0.83 | 0.72 | 0.83 |
| 7/I can sit at ease and feel relaxed | 0.47 | 0.14 | 0.33 |
| 9/I get a sort of frightened feeling like 'butterflies' in the stomach | 0.76 | 0.62 | 0.74 |
| 11/I feel restless as if I have to be on the move | 0.50 | 0.14 | 0.33 |
| 13/I get sudden feeling of panic | 0.63 | 0.58 | 0.65 |
| Item number/Depression (HADS-D) | 0.72 | 1 | |
| 2/I still enjoy the things I used to enjoy | 0.60 | 0.83 | 0.78 |
| 4/I can laugh and see the funny side of things | 0.60 | 0.84 | 0.78 |
| 6/I feel cheerful | 0.65 | 0.77 | 0.76 |
| 8/I feel as if I am slowed down | 0.44 | 0.58 | 0.55 |
| 10/I have lost interest in my appearance | 0.31 | 0.48 | 0.43 |
| 12/I look forward with enjoyment to things | 0.63 | 0.86 | 0.81 |
| 14/I can enjoy a good book or TV program | 0.47 | 0.79 | 0.69 |
| Emotional functioning | -0.67 | -0.63 | -0.70 |
| Global quality of life | -0.68 | -0.75 | -0.77 |
* Pearson's correlation coefficient and all significant at the 0.01 level (P < 0.0001).