Writing from Observatory on observational research, code sets, and cohort specification.https://observational.study/https://observational.study/blog/observatory/https://observational.study/blog/observatory/I think of the work we're doing as an "observational study laboratory." So we've collapsed that long phrase into one word: Observatory.Thu, 01 Oct 2026 00:00:00 GMTMark Danesehttps://observational.study/blog/common-data-models-answer-half-the-question/https://observational.study/blog/common-data-models-answer-half-the-question/Creating a cohort requires the answer to two questions — what to search for, and where to search for it. Data organization only answers the second half, about where to look.Sun, 13 Sep 2026 00:00:00 GMTMark Danese