Some journals publish appendixes, at least occasionally, for material that might be considered ancillary to the content of the article itself (eg, derivation of a complex formula used in the article, a survey instrument used in a study, statistical modeling details). JAMA and the Archives Journals generally do not use appendixes. If these are worthy of publication because they contain important information, they could be considered for online-only publication (see , Online-Only [Supplementary] Material). On rare occasions, however, they serve a useful purpose for data that cannot easily be presented as a table or a figure and are too central ...
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