Table 2:

Characteristics of cannabis use among young adults from the 2017 and 2018 Behavioral Risk Factor Surveillance System surveys

Characteristic	No. of cannabis users n = 4610	Weighted proportion of cannabis users (95% CI)*
Frequency of use†
Less frequent	1457	29.5 (27.3–31.7)
More frequent	3153	70.5 (68.3–72.7)
Primary method of consumption
Smoke	3640	76.3 (74.3–78.4)
Vapourize	431	11.3 (9.8–12.8)
Other	539	12.4 (10.8–13.9)

Note: CI = confidence interval.

^*Weighted proportions and 95% confidence intervals were calculated in consideration of the complex sampling design of the Behavioral Risk Factor Surveillance System survey

^†We defined less frequent use as consumption of cannabis ≤ 4 times per month (≤ 1 time per week), and more frequent use as consumption of cannabis > 4 times per month (> 1 time per week).