Table 1 Internal consistency and item-total correlations for individual items on EPDS
Item | Mean | SD | Scale mean if item deleted | Corrected item-total correlation | Cronbach’s alpha if item deleted |
|---|---|---|---|---|---|
1. I have been able to laugh and see the funny side of things | 0.16 | 0.433 | 6.48 | 0.409 | 0.785 |
2. I have looked forward with enjoyment to things | 0.17 | 0.448 | 6.47 | 0.346 | 0.789 |
3. I have blamed myself unnecessarily when things went wrong | 1.39 | 0.954 | 5.25 | 0.455 | 0.779 |
4. I have been anxious or worried for no good reason | 1.16 | 0.934 | 5.49 | 0.545 | 0.765 |
5. I have felt scared or panicky for no very good reason | 1.02 | 0.980 | 5.63 | 0.483 | 0.775 |
6. Things have been getting on top of me | 0.83 | 1.003 | 5.82 | 0.507 | 0.772 |
7. I have been so unhappy that I have had difficulty sleeping | 0.62 | 0.857 | 6.02 | 0.474 | 0.775 |
8. I have felt sad or miserable | 0.71 | 0.802 | 5.93 | 0.619 | 0.756 |
9. I have been so unhappy that I have been crying | 0.50 | 0.707 | 6.15 | 0.578 | 0.763 |
10. The thought of harming myself has occurred to me | 0.08 | 0.339 | 6.57 | 0.369 | 0.790 |