File:Fig3 Jikomes SciReports2018 8.jpg
Figure 3. THC and CBD Levels Vary Between Labs After Controlling for Plausible Confounds. Average predicted values (+/− 99% confidence intervals) are shown, by lab, for (a) THC levels in chemotype I flower products (n = 161,933); (b) THC levels in chemotype I concentrate products (n = 33,888); (c) CBD levels in chemotype II and III flower products (n = 4,661); and (d) CBD levels in chemotype II and III concentrate products (n = 2,156) after adjusting for grower, strain-name, and time of measurement. Predicted values were generated from fixed-effects regressions with cluster-robust standard errors (see Methods).
Jikomes, N.; Zoorob, M. (2018). "The cannabinoid content of legal cannabis in Washington State varies systematically across testing facilities and popular consumer products". Scientific Reports 8: 4519. doi:10.1038/s41598-018-22755-2.
Jikomes, N.; Zoorob, M.
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