Table 3 Summary results of the Rasch measurement theory analysis of 1) the EORTC QLQ-C30 PF items and 2) EORTC QLQ-C30 and supplemental PF items
EORTC QLQ-C30 Physical functioning | EORTC QLQ-C30 Physical functioning and supplemental items | |||||
|---|---|---|---|---|---|---|
Disordered threshold | Fit residuals | PSI | Disordered threshold | Fit residuals | PSI | |
Trouble doing strenuous activities | No | − 0.771 | 0.82 | No | − 0.939 | 0.83 |
Trouble taking a long walk | No | −1.767 | No | −1.506 | ||
Trouble doing short walk out | No | −0.692 | No | −0.766 | ||
Need to stay in bed or chair | No | 2.334 | No | 1.841 | ||
Need help with eat wash toilet | Yes | −0.93 | Yes | − 0.829 | ||
Slowed down | No | 0.795 | ||||
Difficult climbing stairs | No | −0.291 | ||||