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Due to the notable floor effects, items assessing the concepts of vomiting, blood in bowel movement, and nausea were deleted from the exploratory factor analysis model.
To avoid order effects, items within each section were presented randomly.
To avoid sequence effects, items within tests were randomized, and order between tests was randomized across subjects.
In order to examine patterns in perceptions of the effects we conducted a principal components factor analysis with orthogonal rotation with the 17 individual effects items.
All items were scored such that higher scores represented greater satisfaction (for satisfaction items) or less bother or frequency of side effects (for side effects items).
The factor analysis of the 17 individual perceived effects items suggested two distinct constructs: Relief of Symptoms and Functional Well-being.
Similar(49)
The mean, percentages of minimum and maximum responses (to determine floor and ceiling effects), item-total correlation, frequencies of item responses, and inter-item correlations were examined.
These were followed at a considerable distance by "discretion" (Item 4; 0,727 coefficient), "dosage" (Item 3; 0,468 coefficient), and "side effects" (Item 2; 0,470 coefficient).
We report scale reliability, floor/ceiling effects, item factor loadings, inter-factor correlations, and percentage of respondents who agree with each item and scale.
H05: For the Side Effects domain there will be a correlation with Side Effect Frequency/Severity (FIBSER) and/or self report overall side effects item.
Seven items concerning follow-up analyses (items 9, 17 and 26), allocation concealment (items 14 and 24), adverse effects (item 8), and representativeness of treatment places and facilities (item 13) were not considered in this review.
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