Table 2.

Prevalence of Past 12-Month Users Who Reported the Tetrahydrocannabinol:Cannabidiol Ratio of the Product They Usually Use

Product	Canada	US illegal states	US legal states	Illegal states vs. Canada (ref)	Legal states vs. Canada (ref)	Legal vs. illegal states (ref)
	% (n)			AOR (95% CI), p-value
Dried herb (n=5406)	50.2% (1001)	52.1% (862)	67.5% (1186)	1.08 (0.90–1.30), 0.415	2.00 (1.61–2.47), <0.001	1.85 (1.50–2.29), <0.001
Oil - oral (n=1487)	73.1% (395)	78.5% (326)	83.1% (440)	1.28 (0.85–1.93), 0.245	1.73 (1.21–2.67), 0.013	1.35 (0.85–2.16), 0.203
Oil - vaped (n=2018)	54.9% (279)	59.4% (364)	70.7% (634)	1.16 (0.83–1.60), 0.386	2.04 (1.44–2.90), <0.001	1.77 (1.28– 2.44), <0.001
Edibles/foods (n=2849)	43.8% (407)	45.8% (347)	59.8% (695)	1.04 (0.80–1.34), 0.785	1.93 (1.48–2.51), <0.001	1.86 (1.42–2.43), <0.001
Concentrates (n=1218)	56.3% (233)	58.3% (179)	71.2% (354)	0.98 (0.64–1.50), 0.920	1.92 (1.25–2.96), 0.003	1.97 (1.25–3.09), 0.004
Hash/kief (n=1504)	45.4% (280)	53.7% (186)	65.4% (353)	1.13 (0.85–1.78), 0.276	2.13 (1.46–3.12), <0.001	1.73 (1.14–2.63), 0.010
Drinks (n=741)	54.3% (106)	75.0% (131)	71.3% (265)	2.33 (1.22–4.44), 0.010*	1.99 (1.13–3.49), 0.017*	0.85 (0.46–1.58), 0.614*
Tinctures (n=589)	70.3% (115)	80.8% (108)	75.8% (222)	1.75 (0.87–3.51), 0.115*	1.46 (0.78–2.74), 0.240*	0.83 (0.43–1.63), 0.594*
Topicals (n=927)	52.8% (121)	73.0% (165)	68.7% (324)	2.38 (1.44–3.93), <0.001	1.97 (1.25–3.10), 0.003	0.83 (0.51–1.33), 0.434

Significant differences between jurisdictions (p < 0.05) are indicated in bold.

Binary logistic regression (1=selected a ratio or “Other”; 0=“Don't know”), excluding “Refuse to answer”.

^* Regression models for drinks and tinctures produced quasi-separation of data points due to small cell sizes; results of these models should be interpreted with caution.

CI, confidence interval; AOR, adjusted odds ratio; ref, reference group.