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The point along the disability continuum at which respondents have a 0.50 probability of endorsing response category j or higher of item i is represented by β ij.
This relationship is conditional in that people with higher levels on the underlying construct will have a higher probability of endorsing response categories that are consistent with higher trait levels [ 13, 14].
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Disordered thresholds occur when respondents inconsistently endorse response categories.
The most frequently endorsed response category was category 3 (all), which was endorsed by 48.8%to82.9%9% of respondents depending on the item, indicating strong ceiling effects and/or bias towards acquiescent responding.
This poor fit was likely due to the skewed response distributions for the majority of items (few respondents tended to endorse response options at the negative end of the scale).
The third assumption is that for each item the probability of a particular response level, for example in the case of a simple correct/incorrect (binary) responses, the correct answer, or endorsed response P i is a monotonically non-decreasing function of the latent trait θ.
In the current study of emergency respiratory patients, 23% of participants were planning to quit in the next 30 days, and an additional 19% endorsed responses indicating higher levels of motivation to quit.
The number of people to whom respondents turned when distressed was measured by summing endorsed responses to an item which asked, "Who do you feel comfortable getting help from when you feel anxious, sad, or depressed?" Respondents selected all that applied from a list of 23 categories that ranged from friends and parents to therapists and local providers.
The percentage of participants endorsing each response is presented in Table 1.
In considering MEF, the N of respondents endorsing each response category was established.
Analyses assessing feasibility and acceptability examined time to complete the program and overall proportions of women endorsing different response options to the user experience items, respectively.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com