Dear All,
I have a burning question regarding the origin of the word ?sandwich? that frequently appears in meta-analysis (e.g., ?Egger sandwich test? and the R package ?clubSandwich?). Could some meta tycoon(s) share knowledge/discussion on this?
My vague impression was that ?sandwich? may relate to the looking of a linear algebra expression for computing uncertainties. However, I could no longer identify this source (a book I think) and feel much bothered by it. Thank you all in advance!
Best regards,
Sicong (Zone)
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Sicong (Zone) Liu, Ph.D.
Research Associate
University of Pennsylvania
3620 Walnut Street,
Philadelphia, PA 19104-6220
Email: zone at upenn.edu<mailto:zone at upenn.edu>
Cell: 850-345-5788
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