| Cut-off Scores | ||||||
---|---|---|---|---|---|---|---|
Scalea | Summed Score | IRT score (θ)b | Corresponding Summed Score in BDI-II | Corresponding Summed Score in CES-D | Corresponding Summed Score in PHQ-9 | Corresponding Summed Score in DASS-Depression | Corresponding Summed Score in HADS-Depression |
BDI-II | |||||||
 Mild depression | 14 | −0.67 | - | 19 | 5 | 4 | 6 |
 Moderate depression | 20 | −0.18 | - | 24 | 8 | 7 | 8 |
 Severe depression | 29 | 0.47 | - | 32 | 13 | 11 | 11 |
CES-D | |||||||
 Risk for depression | 16 | −0.95 | 11 | - | 4 | 3 | 5 |
PHQ-9 | |||||||
 Mild depression | 5 | −0.76 | 13 | 18 | - | 4 | 6 |
 Moderate depression | 10 | 0.05 | 23 | 27 | - | 8 | 9 |
 Moderately severe depression | 15 | 0.68 | 32 | 35 | - | 12 | 12 |
 Severe depression | 20 | 1.30 | 41 | 43 | - | 16 | 14 |
DASS-Depression | |||||||
 Mild depression | 5 | −0.49 | 16 | 21 | 6 | - | 7 |
 Moderate depression | 7 | −0.18 | 20 | 24 | 8 | - | 8 |
 Severe depression | 11 | 0.47 | 29 | 32 | 13 | - | 11 |
 Extreme Severe depression | 14 | 0.95 | 36 | 39 | 17 | - | 13 |
HADS-Depression | |||||||
 Mild depression | 8 | −0.33 | 18 | 22 | 7 | 6 | - |
 Moderate depression | 11 | 0.40 | 28 | 31 | 12 | 10 | - |
 Severe depression | 15 | 1.37 | 42 | 44 | 20 | 16 | - |