Skip to main content
. Author manuscript; available in PMC: 2022 Feb 1.
Published in final edited form as: Drug Alcohol Depend. 2021 Jan 5;219:108494. doi: 10.1016/j.drugalcdep.2020.108494

Table 3.

Quarterly Trends in Frequency of Past-Month Cannabis Use and Blunt Use Among Those Reporting Past-Month Cannabis Use, 2015–2019

Weighted % (95% CI) % Change from Quarter 1 to Quarter 4
Characteristic Quarter 1 (January-March) Quarter 2 (April-June) Quarter 3 (July-September) Quarter 4 (October-December) Absolute Change Relative Change Linear Trend P Value
Number of Days Used Cannabis in Past Month
 1–2 22.3 (20.9–23.9) 22.3 (21.0–23.6) 22.3 (21.0–23.7) 20.5 (19.3–21.7) −1.8 −8.1 0.046
 3–5 15.1 (13.9–16.5) 15.7 (14.7–16.9) 15.3 (14.2–16.6) 15.8 (14.6–17.1) 0.7 4.6 0.569
 6–19 20.7 (19.2–22.3) 20.3 (19.1–21.7) 20.5 (19.3–21.7) 20.3 (19.1–21.6) −0.4 −1.9 0.695
 20–30 41.8 (40.1–43.5) 41.6 (40.2–43.0) 41.9 (39.9–43.9) 43.5 (41.6–45.4) 1.7 4.1 0.176
Past-Month Blunt Use
 No 63.7 (62.4.65.0) 63.5 (62.1–65.0) 64.7 (63.3–66.1) 64.1 (62.6–65.6) 0.4 0.6 0.435
 Yes 36.3 (35.0–37.6) 36.5 (35.0–37.9) 35.3 (33.9–36.7) 35.9 (34.4–37.4) −0.4 −1.1 0.435

Aggregated data from the 2015–2019 US National Survey on Drug Use and Health (NSDUH) among respondents ages ≥12 reporting past-month cannabis use (n=34,370).