Table 1 Participant characteristics and cannabis-related factors among US and Israeli participants

Sociodemographics

–

–

–

–

 Age, M (SD)

32.19 (7.74)

34.11 (7.23)

30.21 (7.76)

 < .001

 Female, N (%)

1,118 (50.3)

562 (49.8)

556 (50.8)

.637

 Sexual minority, N (%)

356 (16.0)

147 (13.0)

209 (19.1)

 < .001

 ≥ College degree, N (%)

953 (42.9)

484 (42.9)

469 (42.9)

.986

 Married/cohabitating, N (%)

1,186 (53.4)

601 (53.3)

585 (53.5)

.927

 Children in the home, N (%)

1,125 (50.6)

529 (46.9)

596 (54.5)

 < .001

Theory-based predictors, M (SD)

 Perceived risk – mean score ^a

4.75 (1.97)

4.29 (1.99)

5.18 (1.84)

 < .001

  Addictiveness

4.76 (2.25)

4.40 (2.26)

5.12 (2.19)

 < .001

  Harm to health

4.73 (2.20)

4.20 (2.22)

5.25 (2.05)

 < .001

 Perceived social norms – mean score ^b

2.49 (1.60)

2.79 (1.70)

2.19 (1.44)

 < .001

  Social acceptability

2.58 (1.90)

2.93 (2.04)

2.24 (1.69)

 < .001

  Use in social network

2.40 (1.68)

2.64 (1.70)

2.15 (1.61)

 < .001

N = 809

N = 563

N = 246

Those reporting lifetime cannabis use:

(36.4%)

(49.9%)

(22.5%)

 < .001

 Age of first use, M (SD)

18.28 (5.83)

17.83 (5.22)

19.31 (6.95)

.001

 Methods used, past 12 months, N (%)

  Smoked without tobacco

244 (30.2)

202 (36.0)

42 (17.2)

 < .001

  Smoked with tobacco

167 (20.7)

48 (8.6)

119 (48.4)

 < .001

  Vaped in liquid form

140 (17.3)

109 (19.4)

31 (12.6)

.018

  Vaped dried leaves or herb

59 (7.3)

34 (6.1)

25 (10.2)

.039

  Dabbed concentrates (e.g., shatter, budder, wax)

59 (7.3)

50 (8.9)

9 (3.7)

.008

  Orally (e.g., oil, capsules, dissolvable strips, spray)

51 (6.3)

38 (6.8)

13 (5.3)

.424

  Topically (e.g., lotions, bath salts)

39 (4.8)

28 (5.0)

11 (4.5)

.751

  Edibles (i.e., food/drinks)

178 (22.1)

152 (27.1)

26 (10.6)

 < .001

 Primary reasons for cannabis use, N (%)^c

.015

  Recreational purposes

479 (66.3)

345 (68.5)

134 (61.2)

  Medical purposes

66 (9.1)

36 (7.1)

30 (13.7)

  Both recreational and medical purposes

178 (24.6)

123 (24.4)

55 (25.1)

 Source of cannabis, most often in past 12 months, N (%)^d

 < .001

  Family member or friend

184 (41.7)

119 (41.5)

65 (42.2)

  Dealer or other non-legal source (in person)

91 (20.6)

52 (18.1)

39 (25.3)

  At vape shop, dispensary, co-operative, or other store

100 (22.7)

91 (31.7)

9 (5.8)

  Online

66 (15.0)

25 (8.7)

41 (26.6)

N = 370

N = 248

N = 122

Those reporting past 30-day cannabis use:

(16.7%)

(22.0%)

(11.2%)

 < .001

 Number of days used, past 30 days, M (SD)

13.84 (11.85)

15.90 (12.29)

9.66 (9.67)

 < .001

 Times used per day on days used, M (SD)

3.29 (2.89)

3.26 (3.00)

3.37 (2.69)

.728

 Most common method, past 12 months, N (%)

 < .001

  Smoked without tobacco

123 (34.3)

113 (47.3)

10 (8.3)

  Smoked with tobacco

94 (26.2)

25 (10.5)

69 (57.5)

  Vaped

75 (20.9)

47 (19.7)

28 (23.3)

  Edibles (i.e., food/drinks)

28 (7.8)

27 (11.3)

1 (0.8)

  Other

39 (10.9)

27 (11.3)

12 (10.0)