Table 3 Multivariable logistic regression assessing correlates of past 30-day cannabis^a-only use (vs. cannabis and other substance use^b), National Survey on Drug Use and Health, 2017–2018

Sex

 Male

Reference

0.35

 Female

1.1 (0.9, 1.4)

Age

 18–25 years

1.4 (1.1, 2.0)

< .001

 26–49 years

2.1 (1.5, 2.9)

 > = 50 years

Reference

Race

 Non-Hispanic (NH) White

Reference

0.30

 NH Black

0.8 (0.6, 1.0)

 NH other

0.9 (0.7, 1.3)

 Hispanic

0.8 (0.6, 1.1)

Education

 < high school

Reference

< .01

 High school graduate

1.0 (0.6, 1.5)

 Some college/associate degree

1.1 (0.7, 1.7)

 College graduate

1.8 (1.1, 2.8)

Age at first cannabis use^c

 < 16 years

1.4 (1.1, 1.6)

< .001

 ≥ 16 years

Reference

Cannabis use frequency^c (past 30 days)

  20 days

Reference

< .01

 20 or more days

1.3 (1.1, 1.5)

Any past year cannabis use recommended by a healthcare professional?^c

 All

Reference

< .0001

 Some, but not all

1.4 (0.9, 2.2)

 None

2.3 (1.8, 2.9)

Past year cannabis dependence

 Yes

1.3 (0.9, 1.9)

0.12

 No

Reference

Self-reported overall health

 Good to excellent

Reference

0.48

 Fair/poor

0.9 (0.6, 1.2)

Past year any mental illness

 Any

1.2 (0.9, 1.5)

0.18

 None

Reference