Table 1.
Baseline Characteristics of Analytic Sample, by Study Marijuana Use; M (SD) or N (%)
| Variables at baseline | All N = 114 |
Marijuana used,g | X 2/t | p h | ||
|---|---|---|---|---|---|---|
| Nonmarijuana users (n = 62) | Marijuana users (n = 52) | |||||
| Demographics | Sitea | 4.088 | .043 | |||
| San Diego, CA | 54 (47.4) | 24 (38.7) | 30 (57.7) | |||
| Kansas City, MO | 60 (52.6) | 38 (61.3) | 22 (42.3) | |||
| Genderb | 2.094 | .148 | ||||
| Male | 67 (58.8) | 33 (53.2) | 34 (65.4) | |||
| Female | 46 (40.4) | 29 (46.8) | 17 (32.7) | |||
| Age, years | 44.6 (12.9) | 47.8 (12.1) | 40.8 (12.8) | 3.026 | .003 | |
| Marriage status | 3.209 | .073 | ||||
| Never married | 51 (44.7) | 23 (37.1) | 28 (53.8) | |||
| Otherc | 63 (55.3) | 39 (62.9) | 24 (46.2) | |||
| Federal poverty level | 0.118 | .731 | ||||
| At or below 200% | 83 (74.1) | 46 (75.4) | 37 (72.5) | |||
| Above 200% | 29 (25.9) | 15 (24.6) | 14 (27.5) | |||
| Outcome variables | Cigarettes per week smokedd | 82.6 (44.7) | 83.0 (42.5) | 82.2 (47.5) | 0.094 | .925 |
| Other combustible tobacco productsd,e | 25 (21.9) | 9 (14.5) | 16 (30.8) | 4.364 | .037 | |
| Carbon monoxide, ppm | 17.7 (9.0) | 16.8 (8.9) | 18.8 (9.2) | −1.177 | .242 | |
| Respiratory symptomsf | 11.9 (8.4) | 12.0 (8.4) | 11.7 (8.5) | 0.226 | .821 |
Boldface indicates statistical significance (p < .05).
aSite and race/ethnicity are interchangeable such that those from San Diego were Latinx and those from Kansas City were African American.
bDue to small sample size, gender excluded one participant who identified as transgender/gender nonconforming and was not included in chi-square analysis.
cMarried, divorced, separated, or widowed.
dPast 7-day Timeline Followback (TLFB).
eDichotomized into use of other combustible tobacco products or no use of other combustible tobacco products (besides cigarettes). Includes little cigars, cigarillos, hand-rolled cigarettes, full-sized cigars, pipes, bidis, and hookah/water pipes.
fMeasured with the American Thoracic Society Questionnaire, range 0–32, with higher scores indicating increased respiratory symptoms.
gDichotomized into marijuana use reported at the baseline, week 2, or week 6 visit, or no marijuana use reported.
hInferential testing for demographics based on marijuana use used t tests and chi-square tests.