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. 2021 May 6;4(5):e219375. doi: 10.1001/jamanetworkopen.2021.9375

Figure 1. Process for Creating the Composite Measure of Electronic Health Record (EHR)–Documented Cannabis Use.

Figure 1.

aExcludes Kaiser Permanente Washington employees and patients opting out of inclusion of their EHR in research.

bAs determined by natural language processing–assisted EHR review and International Statistical Classification of Diseases and Related Health Problems, Tenth Revision diagnoses.

cAs determined by patient report of cannabis use on an annual cannabis screen.