A Note regarding Problems with Interaction and Varying Block Sizes in a Comparison of Endotracheal Tubes
Joint Authors
Einsporn, Richard L.
Jia, Zhenyu
Source
Computational and Mathematical Methods in Medicine
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-07-15
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
A randomized clinical experiment to compare two types of endotracheal tubes utilized a block design where each of the six participating anesthesiologists performed tube insertions for an equal number of patients for each type of tube.
Five anesthesiologists intubated at least three patients with each tube type, but one anesthesiologist intubated only one patient per tube type.
Overall, one type of tube outperformed the other on all three effectiveness measures.
However, analysis of the data using an interaction model gave conflicting and misleading results, making the tube with the better performance appear to perform worse.
This surprising result was caused by the undue influence of the data for the anesthesiologist who intubated only two patients.
We therefore urge caution in interpreting results from interaction models with designs containing small blocks.
American Psychological Association (APA)
Einsporn, Richard L.& Jia, Zhenyu. 2014. A Note regarding Problems with Interaction and Varying Block Sizes in a Comparison of Endotracheal Tubes. Computational and Mathematical Methods in Medicine،Vol. 2014, no. 2014, pp.1-4.
https://search.emarefa.net/detail/BIM-511288
Modern Language Association (MLA)
Einsporn, Richard L.& Jia, Zhenyu. A Note regarding Problems with Interaction and Varying Block Sizes in a Comparison of Endotracheal Tubes. Computational and Mathematical Methods in Medicine No. 2014 (2014), pp.1-4.
https://search.emarefa.net/detail/BIM-511288
American Medical Association (AMA)
Einsporn, Richard L.& Jia, Zhenyu. A Note regarding Problems with Interaction and Varying Block Sizes in a Comparison of Endotracheal Tubes. Computational and Mathematical Methods in Medicine. 2014. Vol. 2014, no. 2014, pp.1-4.
https://search.emarefa.net/detail/BIM-511288
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-511288