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- Published on: 29 April 2016
- Published on: 29 April 2016
- Published on: 29 April 2016Author's replyShow More
Dear Editor,
We appreciate the thoughtful comments of Dr. Yen et al. regarding the sampling process of our study. In our telephonic survey of doctors, every third case from a list of 194 emergency physicians (EPs) and 330 general surgeons (GSs) was randomly selected to derive our study sample. Enrolled cases with invalid or expired contact information (6 EPs and 11 GSs) were subsequently excluded before formal...
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None declared. - Published on: 29 April 2016Inappropriate random sample ?Show More
Dear Editor,
We read the paper by Chong et al. [1] with great interest. However, we have some doubts regarding their random sample. They had a list of 194 emergency physicians (EPs) and 330 general surgeons (GSs). Every third case in the list was selected. There should be about 64 EPs and 110 GSs in their study sample. However, exactly 90% of the expected numbers of physicians composed their EPs (58) and GSs (99)...
Conflict of Interest:
None declared.