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3. Describe and reduce items with the observation of 116 brain-injured patients in the intensive care unit during common painful procedures.
Our study applied principal component analysis with oblimin rotation and attempted to repeat exploratory factor analysis four times to reduce items.
A 2nd internet survey served to reduce items based on perceived importance and representativeness.
Consensus methods are often used to select and reduce items, and are usually designed to combine the knowledge and expertise of experts.
In addition, factor analysis and principal component analysis were used to develop an internally consistent scale and reduce items [ 17, 50].
Since our analysis was descriptive, we do not suggest to reduce items that have not shown significant correlation with psychologic distress or psychiatric disorders from the emotions subdomain of the AQLQ(S) questionnaire.
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Several strategies were implemented to increase survey participation and reduce item nonresponse.
As a result, these large banks of items must first be developed and continually restored in order to reduce item exposure and keep test security while allowing for continuous administration of the test.
We used direct patient inquiry to generate an item pool, and we used rigorous statistical methods to reduce item numbers and construct an instrument that contains items tapping domains specifically relevant to patients with IPF.
The original Health Care Climate Questionnaire contained 15 items and was shorted to the modified Health Care Climate Questionnaire (mHCCQ) to reduce item redundancy while retaining a full representation of the concept of autonomy support [ 15].
While no direct comparison can be made to a comparable questionnaire, our findings do suggest a number of strengths of the questionnaire but also the need to reduce item redundancy and to test its capacity to monitor changes over time.
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CEO of Professional Science Editing for Scientists @ prosciediting.com