Table 3.
Differential Item Function (DIF) results for no chemotherapy and received chemotherapy.
| Slope | Threshold parameter | Wald Χ2 statistic | p-value for overall DIF | |
|---|---|---|---|---|
| Item #1 Mood | 4.24 | 1.00 | - | - |
| Item #2 No interest | 1.71 | 1.29 | - | - |
| Item #3 Sleep | ||||
| No chemotherapy | 1.03 | −.07 | 1.0 | .59 |
| Chemotherapy | .67 | −.62 | ||
| Item #4 Fatigue | ||||
| No chemotherapy | 1.24 | −.48 | 5.1 | .08 |
| Chemotherapy | 1.75 | −1.13 | ||
| Item #5 Appetite | ||||
| No chemotherapy | 2.95 | .57 | 2.2 | .33 |
| Chemotherapy | 1.43 | .73 | ||
| Item #6 Guilt | 1.78 | 1.72 | - | - |
| Item #7 Cognition | ||||
| No chemotherapy | 1.63 | .99 | .5 | .79 |
| Chemotherapy | 2.11 | 1.06 | ||
| Item #8 Psychomotor | 1.55 | 1.76 | - | - |
| Item #9 Suicidality | 1.64 | 2.88 | - | - |