It would be useful to add an option in the dedup algorithm to “Ignore capitalization,” at least in Titles.
Biosis capitalizes each content-bearing word, while Embase uses Sentence capitalization. Biosis also occasionally uses all upper case in titles.
Ovid dedup doesn’t catch these, and in very large retrievals, this makes for a lot of manual EndNote deduping.
I usually adjust my dedup settings to look at other fields – pages, vol, author – dedup those, then maybe titles and not authors, as sometimes some databases use diacritics, for example. It means rerunning a couple of times, to catch the variants, but prevents too much manual review. Sometimes I even do just vol/pages, and that also brings up records not really dups, especially those that were uploaded in their prepublication database entry. I then select the journal articles and ask Endnote to update them, so they get the vol/pages info.