This is a narrowly-scoped question; I'm just curious if this has been investigated quantitatively.
I spent some substantial time and effort and love and coffee writing this answer to a question that had some close votes and was subsequently closed of an older and valid duplicate.
That all that happened is all okay with me generally; generating posts is of itself already rewarding, I'm not in it for the rep. But...
Begin actual question:
I've sometimes felt a pang of concern when a question with a good answer is closed as duplicate, my concern has been that fewer future eyes will reach that good answer due to the closed status. I currently have no basis for that concern, it is just a hunch.
Since Stack Exchange has it's data exploring SEDE tool and there are potentially outside ways to count traffic, hits, etc., I'm curious about the following:
Question: Have there been analyses to see if views of well-received answers are reduced by closure as duplicate where the analysis tries to control for other factors?
I am no expert in data analysis other than I know that it can be really hard to control for other factors, but someone skilled in the art may have tried.
Please: It's not necessary to post an answer explaining why this is hard or impossible therefore there couldn't ever have been any QED. I'm scoping this question to focus only on what has been tried. Thanks!
Advice from 2012: