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Initial fit to model expectations was poor.
Initial fit to model expectations was poor (Table 1 – Analysis 1).
Similar(58)
Generally non-significant deviations from the model expectations are expected for chi-square-based statistics, and within range (± 2.5) for residual fit statistics.
Bold in virtuosity, assured in musicianship, his gifts far outweigh all the role model expectations being heaped on him.
Rasch model expectations were met after correctly ordering the item set into salient factors and removing misfitting items.
Data from the Physical subscale satisfied Rasch model expectations, were unidimensional, free of DIF and local dependency (Table 3, Analysis 1).
Thus items to be entered into the item bank are required to satisfy Rasch model expectations, be free of DIF, and meet strict unidimensionality and local independence assumptions.
After the removal of 4 of the original items measuring tension, and accommodating local dependency in the data, model expectations were met.
DIF was demonstrated in three items (e.g. items 'difficulty standing for long periods' and 'limited in ability to go up and down stairs' from the mobility scale; Table 4), however deviations from model expectations were marginal, suggesting item performance across the four clinical subgroups is stable and that these groups can be measured on a common ruler.
The fit to the model expectation was achieved.
No significant excess over the standard model expectation is observed.
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Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com