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. Author manuscript; available in PMC: 2023 Jan 1.
Published in final edited form as: Am J Prev Med. 2021 Aug 20;62(1):57–64. doi: 10.1016/j.amepre.2021.06.003

Table 1.

Sample characteristics, percent

Variable Total Sample (N=3,319,329) Non-heavy drinkers (n=251,835)a Heavy drinkers (n=281,938)a Marijuana Users (n=386,116)a
Past-30-day alcohol and marijuana co-use 8.1 31.6 67.8 69.7
Past-30-day non-heavy drinking 7.5 100.0 0.0 20.4
Past-30-day heavy drinking 8.4 0.0 100.0 49.3
Past-30-day marijuana use 11.6 31.6 67.8 100.0
Grade 7 34.0 19.7 11.0 12.1
Grade 9 34.9 37.0 33.4 36.2
Grade 11 31.1 43.3 55.6 51.7
Female 48.5 56.4 46.5 45.1
Hispanic 52.8 60.2 58.6 59.5
American Indian/Alaska Native 3.0 3.5 4.1 4.0
Asian 12.3 6.1 4.9 4.6
Black 7.0 6.1 7.2 9.7
Native Hawaiian/Pacific Islander 0.9 0.9 1.2 1.2
White 31.9 32.7 34.7 30.8
Multi-racial 32.3 35.1 33.6 35.7
Unknown race 0.7 0.6 0.7 0.7
Urban/rural context
≥ 1 million population 71.7 69.5 67.9 68.6
250K – 1M population 21.9 23.0 23.2 23.5
Metro (< 250K pop.) 3.7 4.2 4.8 4.2
Nonmetro (≥ 20K pop.) 1.3 1.7 2.2 1.9
Nonmetro (<20K pop.) 1.3 1.5 2.0 1.7

Note: Percentages are weighted whereas sample (N) and subsample (n) sizes are unweighted.

a

The two subgroups of past-30-day drinkers are mutually exclusive, but these subgroups overlap with past-30-day marijuana users