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. Author manuscript; available in PMC: 2021 Jan 1.
Published in final edited form as: Int J Drug Policy. 2019 Jul 24;75:S0955-3959(19)30181-1. doi: 10.1016/j.drugpo.2019.07.003

Table 2.

Prevalence and trends in overall co-use, drinking, and alcohol-related harms in Washington state, 2014-2016

SAMPLE OVERALL (N = 5,492)
2014 2015 2016 Trend P*
Any cannabis use, past 12 months (%) 25.0 26.2 31.7 0.003
Non-cannabis user/non-drinker (%) 27.6 25.2 25.1 (ref)
Non-cannabis user/drinker (%) 47.5 48.7 43.4 ns
Cannabis user/non-drinker (%) 3.7 3.9 5.3 ns
Concurrent cannabis/alcohol user (%) 8.9 9.1 10.6 ns
Simultaneous cannabis/alcohol user (%) 12.2 13.1 15.7 ns
Current drinker (%) 68.9 71.0 70.0 ns
Average # drinking days, past 30 days 8.6 (0.3) 8.7 (0.4) 8.7 (7.9) ns
Average # drinks/drinking day, past 30 days 2.2 (0.1) 2.1 (0.1) 2.0 (0.1) ns
Average volume, past 30 days 21.6 (2.1) 21.0 (2.5) 20.5 (1.6) ns
Frequency 5+, past 30 days 0.9 (0.2) 0.8 (0.1) 0.9 (0.1) ns
Alcohol-related harms at home, past 12 months (%) 2.1 2.8 1.0 0.013
Health harms (%) 3.5 5.5 4.9 ns
Work harms (%) 0.7 1.4 0.6 ns
Financial harms (%) 1.5 2.1 0.8 0.029
*

From multivariable regression models adjusting for age, gender, race/ethnicity, education, employment, marital status, and cannabis use