Your English writing platform
Discover LudwigExact(35)
DIF may be attributed to item impact, which reflects actual knowledge differences on the construct of interest (Clauser and Mazor, 1998).
fMagis and De Boeck ([in press]) recently found inflated Type I error rates in Mantel-Haenszel approach, and similarly attribute the inflation to the item impact and difference in item discriminations.
In order to assess the item impact on signal polarization, the cross-polar discrimination (XPD) values have been extracted from the measured data and are reported in the last column of Table 2.
The item impact method of developing short forms used the data obtained during the CPQ11 14 item impact study.
Item impact and stepwise regression methods were used to produce each version.
The item impact was determined from the proportion of patients who identified it as important, and the mean importance score [ranging from 1 (least) to 5 (greatest)] attributed to this item (impact score = frequency cited × importance).
Similar(25)
To assess psychometric properties of the revised 15-item Impact on Family (IOF) Scale.
All studies used the short-form 16-item impact version of the CPQ11-14 [ 12, 13].
Melanoma-specific distress was assessed with the 15-item Impact of Events Scale (IES; Horowitz et al, 1979 ).
The severity of PTSD symptoms was assessed using the 22-item Impact of Event Scale – Revised (IES-R; [ 93]).
The single-item impact on QoL is highly correlated with the multiple-item AWI-18, so that we will use only the AWI-18 for further analyses.
Write better and faster with AI suggestions while staying true to your unique style.
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