Category: Addictive Behaviors

PS7- #B59 - Quantifying Primary Modes of Marijuana Consumption in Users in Two Legal Recreational States

Friday, Nov 17
4:00 PM – 5:00 PM
Location: Indigo Ballroom CDGH, Level 2, Indigo Level

Keywords: Addictive Behaviors | Assessment | Measurement

The recent legalization of recreational marijuana (MJ) in multiple U.S. states

has been the impetus for an increase in research investigating the correlates and consequences of

MJ use. One area that has received limited attention is differences based on the various

consumption mediums now available to medical and recreational users. Research has shown that

preferred alcohol (e.g., hard liquor versus beer) affects use and outcomes; however, it is

unknown whether preferred medium of MJ consumption affects use and outcomes. The present

investigation examined relations between preferred route of MJ consumption and outcomes. We

hypothesized that primary medium of use would be related to dependency, motives, and craving.

A community-recruited sample (N = 89; Mage = 35.3 [SD = 10.6] years; 53.8% female; 80.2%

White) of recreational and medical MJ users from two states with legal recreational marijuana

completed self-report measures of use, outcomes, and related health measures. Frequency of MJ

consumption across four categories was assessed: concentrates (e.g., oil, hash, wax), smokeables

(e.g., dried plant matter), edibles (e.g., food/drink, capsules, tinctures), and topicals (e.g., lotions,

salves). Participants were dichotomously categorized by mean split for frequency of MJ use via

smokeables, edibles, and concentrates (frequency of topical use in this sample was too low to be

included). Results indicated that the majority of participants could be categorized into one of

three groups based on whether they fell above the sample mean on one or multiple mediums of

use: primary smokeables users (PS), or those above the mean for smokeables only (N = 29, Mage =

34.28 [SD = 9.98] years, 69% female), individuals above the mean for smokeables and

concentrates frequency (N = 17, Mage = 36.06 [SD = 12.28] years, 35.3% female), and participants

above the mean for smokeables, concentrates, and edibles, labeled as Equal Opportunity (EO)

users, (N = 18, Mage = 34.29 [SD = 8.40] years, 23.5% female). All remaining unassigned

participants were categorized as Other (N = 25, Mage = 35.64 [SD = 10.96] years, 72% female). A

one-way ANOVA revealed a significant difference among user groups on MJ dependency, F(3,

84) = 3.41, p = .021); post-hoc analyses revealed a significant pairwise difference between PS

and Other users (p = .013). MANOVAs revealed no significant differences in cravings or motives

by user group. These results suggest that self-selected mediums of MJ consumption may be

associated with some measures of MJ problem severity. These preliminary findings indicate that

assessment of how people consume MJ may be important in addition to how often they use.

Clara R. Lewis

Research Assistant
Washington State University Vancouver
Portland, Oregon

Benjamin O. Ladd

Assistant Professor
Washington State University Vancouver
Vancouver, Washington