The new SANDAG report, Marijuana Use Among San Diego Arrestees: Two Years of Data Post–Proposition 64 found that in 2018, 71% of adults and 53% of juveniles felt the potency of marijuana had increased since they started using, up from 63% and 39% respectively in 2017.
Links
[1] https://sandag.org/index.asp?newsid=1171&fuseaction=news.detail
[2] https://www.sandag.org/uploads/publicationid/publicationid_4541_24772.pdf
[3] http://www.rethinkpot.org/tags/vaping
[4] http://www.rethinkpot.org/tags/arrest
[5] http://www.rethinkpot.org/tags/san-diego
[6] http://www.rethinkpot.org/tags/california