Table 3 Summary Fit Statistics for Rasch analyses
From: Validation of the Neurological Fatigue Index for stroke (NFI-Stroke)
Analysis Number | Analysis Name | Item Residual | Person Residual | Chi-Square | PSI | Unidimensional | |||
|---|---|---|---|---|---|---|---|---|---|
t-test | |||||||||
(CI) | |||||||||
Mean | SD | Mean | SD | Value | p | ||||
1 | Physical (8 items) | -0.379 | 1.011 | -0.547 | 1.415 | 21.4 | 0.922 | 0.89 | 5.98% |
(3.2-8.8) | |||||||||
2 | Cognitive (4 items) | -0.043 | 1.977 | -0.597 | 1.224 | 18.9 | 0.092 | 0.78 | 3.29% |
(0.4-6.2) | |||||||||
3 | Summary (10 items) | -0.357 | 1.156 | -0.622 | 1.551 | 52.8 | 0.085 | 0.89 | 5.0% |
(2.2-7.8) | |||||||||
4 | Diurnal – Initial (6 items) | -0.423 | 1.862 | -0.683 | 1.351 | 50.5 | 0.001 | 0.70 | 7.72% |
(5.1-10.4) | |||||||||
5 | Diurnal – Final (5 items) | -0.842 | 1.783 | -0.648 | 1.174 | 18.9 | 0.219 | 0.69 | 5.56% |
(2.8-8.3) | |||||||||
6 | Nocturnal Sleep (5 items) | 0.229 | 1.451 | -0.563 | 1.501 | 31.5 | 0.008 | 0.69 | 4.22% |
(1.4-7.0) | |||||||||
Acceptable Values | 0 | <1.4 | 0 | <1.4 | >0.05 a | >0.85 | < 5.0% (Lower CI) | ||