TABLE 5.
Rasch Measurement Theory (RMT) item difficulty estimates and fit statistics
| ITEM | ITEM DIFFICULTY LOGIT | INFIT MNSQ | OUTFIT MNSQ |
| Decreased Appetite | 0.74 | 1.97 | 2.01 |
| Insomnia | -0.09 | 1.45 | 1.53 |
| Recent Memory | 0.36 | 1.22 | 1.31 |
| Cognitive Slowing | 0.23 | 1.01 | 1.04 |
| Irritability | 0.49 | 0.82 | 0.99 |
| Rumination | -0.17 | 0.98 | 0.93 |
| Executive Function | 0.11 | 0.97 | 0.90 |
| Hopelessness | 0.02 | 0.95 | 0.94 |
| Guilt | -0.01 | 0.91 | 0.88 |
| Tension | 0.13 | 0.89 | 0.91 |
| Self-esteem | -0.27 | 0.87 | 0.86 |
| Emotional Fatigue | -0.28 | 0.85 | 0.82 |
| Concentration | -0.30 | 0.82 | 0.80 |
| Anhedonia | -0.40 | 0.76 | 0.73 |
| Drive | -0.55 | 0.70 | 0.68 |
Logit: log of the odds; MNSQ: mean square