Table 2 Past 30-Day Marijuana Use and Tobacco and Marijuana Co-Use among Past-Month Marijuana Users (n = 960) by Sociodemographic Characteristics
Past 30-Day Marijuana Use | Percentage of Days Using Tobacco or Marijuana in which Both Substances Were Used | |||||||
|---|---|---|---|---|---|---|---|---|
Variable | Median | Interquartile Range | Group Comparisons | p | Median | Interquartile Range | Group comparisons | p |
Gender | z = -1.01 | 0.311 | z = -.25 | 0.801 | ||||
Male | 19.0 | (5.0, 30.0) | 48.4 | (13.8, 90.3) | ||||
Female | 16.0 | (4.0, 30.0) | 42.1 | (12.9, 90.3) | ||||
Age | z = -1.10 | 0.271 | z = -.54 | 0.588 | ||||
18–20 | 18.0 | (5.0, 30.0) | 48.0 | (14.3, 89.3) | ||||
21–25 | 17.0 | (3.0, 30.0) | 45.2 | (10.9, 93.5) | ||||
Ethnicity | χ(5)2 = 5.78 | 0.300 | χ2 (5) = 11.22 | 0.047 | ||||
African-American | 8.0 | (4.0, 28.5) | 35.1 | (13.0, 72.4) | ||||
Asian/Pacific Islander | 17.0 | (3.0, 30.0) | 14.3 | (6.3, 74.2) | ||||
Caucasian | 18.5 | (5.0, 30.0) | 50.0 | (14.3, 93.5) | ||||
Hispanic/Latino | 15.0 | (2.0, 26.0) | 38.7 | (6.5, 78.6) | ||||
Multi-Ethnic | 17.0 | (4.0, 30.0) | 42.1 | (13.0, 83.3) | ||||
Other | 14.0 | (6.0, 30.0) | 41.9 | (14.3, 93.5) | ||||
Household Income | χ(6)2 = 2.96 | 0.814 | χ(6)2 = 4.71 | 0.582 | ||||
Less than $20,000 | 16.0 | (5.0, 30.0) | 47.8 | (14.7, 90.3) | ||||
$21,000–$40,000 | 19.0 | (5.0, 30.3) | 52.7 | (12.5, 94.3) | ||||
$41,000–$60,000 | 20.0 | (3.0, 30.0) | 51.6 | (12.5, 96.8) | ||||
$61,000–$80,000 | 17.0 | (4.0, 29.0) | 40.0 | (14.0, 82.3) | ||||
$81,000–$100,000 | 18.0 | (4.0, 30.0) | 48.4 | (12.9, 96.8) | ||||
$100,000–$200,000 | 18.0 | (6.3, 28.0) | 41.8 | (13.1, 76.8) | ||||
Region | χ(3)2 = 1.83 | 0.609 | χ2 (3) = 11.12 | 0.011 | ||||
Northeast | 19.0 | (7.0, 30.0) | 57.1 | (19.7, 93.5) | ||||
Midwest | 17.0 | (7.0, 30.0) | 48.4 | (22.2, 90.3) | ||||
South | 16.0 | (4.0, 30.0) | 42.0 | (12.8, 84.1) | ||||
West | 19.0 | (3.8, 30.0) | 38.3 | (9.1, 90.3) | ||||
Urban/Rural | z = -1.48 | 0.140 | z = -2.35 | 0.019 | ||||
Urban | 17.0 | (4.0, 30.0) | 45.2 | (12.9, 87.1) | ||||
Rural | 20.5 | (6.25, 31.0) | 57.9 | (22.6, 96.8) | ||||
Medical Marijuana State | z = -0.42 | 0.672 | z = -1.10 | 0.272 | ||||
Yes | 19.0 | (4.0, 30.0) | 41.7 | (10.7, 93.5) | ||||
No | 17.0 | (4.0, 30.0) | 48.3 | (15.9, 87.3) | ||||
Student Status | z = -4.00 | 0.000 | z = -4.59 | 0.000 | ||||
Student | 13.0 | (3.0, 28.0) | 30.0 | (7.1, 77.4) | ||||
Non-student | 19.0 | (6.0, 30.0) | 51.6 | (17.0, 93.5) | ||||
Daily Smoking Status | z = -5.34 | 0.000 | z = -11.49 | 0.000 | ||||
Daily smoker | 21.0 | (7.0, 30.0) | 65.6 | (22.7, 96.8) | ||||
Non-daily smoker | 10.5 | (3.0, 26.0) | 20.0 | (5.6, 47.2) | ||||
Total Sample | 18.0 | (4.0, 30.0) | 45.5 | (13.1, 90.3) | ||||