Table A1.
Raw Score to T Score Conversion Table (IRT Fixed-Parameter Calibration Linking) for CES-D to PROMIS Depression
| CES-D score | PROMIS Depression T score | SE | CES-D score | PROMIS Depression T score | SE |
|---|---|---|---|---|---|
| 0 | 34.5 | 6.0 | 30 | 63.9 | 2.1 |
| 1 | 38.6 | 5.1 | 31 | 64.4 | 2.1 |
| 2 | 41.1 | 4.7 | 32 | 64.9 | 2.1 |
| 3 | 42.9 | 4.6 | 33 | 65.4 | 2.1 |
| 4 | 44.7 | 4.1 | 34 | 66.0 | 2.2 |
| 5 | 46.2 | 3.8 | 35 | 66.5 | 2.2 |
| 6 | 47.5 | 3.6 | 36 | 67.0 | 2.2 |
| 7 | 48.7 | 3.4 | 37 | 67.6 | 2.2 |
| 8 | 49.8 | 3.2 | 38 | 68.1 | 2.2 |
| 9 | 50.8 | 3.0 | 39 | 68.7 | 2.2 |
| 10 | 51.7 | 2.9 | 40 | 69.2 | 2.3 |
| 11 | 52.6 | 2.8 | 41 | 69.8 | 2.3 |
| 12 | 53.4 | 2.7 | 42 | 70.4 | 2.3 |
| 13 | 54.1 | 2.6 | 43 | 71.0 | 2.4 |
| 14 | 54.8 | 2.5 | 44 | 71.7 | 2.4 |
| 15 | 55.5 | 2.4 | 45 | 72.3 | 2.5 |
| 16 | 56.2 | 2.4 | 46 | 73.0 | 2.5 |
| 17 | 56.8 | 2.3 | 47 | 73.7 | 2.6 |
| 18 | 57.4 | 2.3 | 48 | 74.4 | 2.7 |
| 19 | 58.0 | 2.3 | 49 | 75.2 | 2.7 |
| 20 | 58.6 | 2.3 | 50 | 76.0 | 2.8 |
| 21 | 59.1 | 2.2 | 51 | 76.8 | 2.9 |
| 22 | 59.7 | 2.2 | 52 | 77.7 | 3.0 |
| 23 | 60.2 | 2.2 | 53 | 78.7 | 3.1 |
| 24 | 60.8 | 2.2 | 54 | 79.7 | 3.2 |
| 25 | 61.3 | 2.2 | 55 | 80.8 | 3.2 |
| 26 | 61.8 | 2.2 | 56 | 82.0 | 3.2 |
| 27 | 62.3 | 2.1 | 57 | 83.1 | 3.2 |
| 28 | 62.9 | 2.1 | 58 | 84.3 | 3.1 |
| 29 | 63.4 | 2.1 | 59 | 85.4 | 2.8 |
| 60 | 86.4 | 2.5 |
Note. IRT = item response theory; CES-D = Center for Epidemiologic Studies Depression Scale; PROMIS Depression = Depression subscale of the Patient-Reported Outcomes Measurement Information System.