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- Published on: 17 January 2005
- Published on: 4 January 2005
- Published on: 17 January 2005Re: Simpson's ParadoxShow More
Dear Editor
Thanks to Dr Yen and colleagues for their interest. We agree that the possibility of a case-mix or wound complexity change could account for bias in this before and after study. However, knowing our case-mix we feel this is unlikely. Most of our wounds are simple skin lacerations and anything more complex than this goes to theatre with general or plastic surgery. It would be unusual for a wound to requ...
Conflict of Interest:
None declared. - Published on: 4 January 2005Simpson's ParadoxShow More
Dear Editor
We read with great interest the paper written by McAdam et al [1]. However, we have some doubts regarding their interpretations due to the study was not a randomized study. One of the key assumptions was that they assumed the sutures were performed in a similar or identical environment during pre- and post- intervention periods. If this assumption is not true, Simpson's Paradox should be consi...
Conflict of Interest:
None declared.