2011/3/11 Amir E. Aharoni <amir.aharoni(a)mail.huji.ac.il>il>:
The English version says: "See the study for more
detailed breakdowns
of cohorts of individual editors over time, and for data from other
languages."
See
http://en.wikipedia.org/wiki/Cohort_(statistics)
It's a term that refers to a group that shares certain
characteristics, typically a time period. In this case it refers to a
group of editors who started editing in a given month, e.g. January
2008, and it follows the development of that group over time.
If you can't find a better translation, the equivalent of "group"
would be fine.
--
Erik Möller
Deputy Director, Wikimedia Foundation
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