Exact(1)
For continuous variables mean (SD) and range are presented ALS, amyotrophic lateral sclerosis; COPD, chronic obstructive pulmonary disorder; HF, heart failure; MS, multiple sclerosis To ensure a stable factor solution, further reductions of items were needed before doing the PCA.
Similar(59)
Study one focused on the generation and reduction of items for the BI-AAQ and a demonstration of construct validity.
The reduction of items in each test according to the Rasch model criteria enabled the development of reading comprehension tests that are time saving for teachers and researchers, without compromising the assessment of the latent trait.
The results of this study led to a reduction of items.
The use of experts is considered an important method for the reduction of items.
This testing might lead to further reduction of items, but also to addition of new ones.
The next step was expert evaluation and reduction of items by team discussion.
All of the items loaded well to the factors (factor loading >0.4), requiring no further reduction of items.
Reduction of items and creation of the scoring method employed statistical methods (principal component analysis, multitrait analysis) and content analysis.
The selection and reduction of items will be performed essentially by means of a principal component analysis (PCA).
Patient interviews were used during development and reduction of items, pilot testing and the psychometric study to assess content relevancy.
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