Table 3.
Sample characteristics of cannabis users by cohort, 2007–2011 (Weighted N= 3,828).
| Predictor | 2007 N = 774 |
2008 N = 755 |
2009 N = 699 |
2010 N = 780 |
2011 N = 820 |
χ2(df) | Combined N = 3,828 |
|---|---|---|---|---|---|---|---|
| Age
| |||||||
| <18 | 43.1 | 40.3 | 41.5 | 46.1 | 44.6 | 8.05(8) | 43.2 |
| ≥18 | 55.8 | 58.6 | 57.9 | 53.2 | 53.8 | 55.8 | |
| Missing Data | 1.1 | 1.1 | 0.6 | 0.7 | 1.6 | 1.1 | |
|
| |||||||
| Sex
| |||||||
| Male | 44.7 | 49.3 | 50.3 | 55.1 | 48.7 | 13.92(8) | 49.6 |
| Female | 49.6 | 46.1 | 45.0 | 40.2 | 46.2 | 45.5 | |
| Missing Data | 5.7 | 4.5 | 4.7 | 4.6 | 5.1 | 4.9 | |
|
| |||||||
| Race/Ethnicity
| |||||||
| White | 66.2 | 63.1 | 62.5 | 63.0 | 58.7 | 37.84(12)*** | 62.7 |
| Black | 10.8 | 12.7 | 6.7 | 7.5 | 12.6 | 10.1 | |
| Hispanic | 11.5 | 13.3 | 16.8 | 14.0 | 12.3 | 13.5 | |
| Missing Data | 11.4 | 11.0 | 13.9 | 15.5 | 16.4 | 13.7 | |
|
| |||||||
| Population Density+
| |||||||
| Non-MSA | 19.8 | 21.7 | 21.0 | 16.5 | 17.6 | 26.15(8)** | 19.2 |
| Small MSA | 44.4 | 52.0 | 47.8 | 56.3 | 51.4 | 50.5 | |
| Large MSA | 35.8 | 26.4 | 31.2 | 27.2 | 31.0 | 30.3 | |
|
| |||||||
| Parent Education
| |||||||
| Low Education | 30.7 | 28.4 | 32.9 | 30.6 | 30.3 | 17.35(12) | 30.5 |
| Medium Education | 31.0 | 28.7 | 26.8 | 31.9 | 26.6 | 29.0 | |
| High Education | 35.2 | 37.0 | 36.6 | 35.1 | 38.7 | 36.5 | |
| Missing Data | 3.2 | 5.9 | 3.7 | 2.5 | 4.4 | 3.9 | |
|
| |||||||
| Religiosity
| |||||||
| Low | 40.1 | 38.1 | 40.5 | 36.5 | 38.7 | 12.98(12) | 38.8 |
| Medium | 23.2 | 20.4 | 21.4 | 21.2 | 19.6 | 21.1 | |
| High | 14.3 | 15.3 | 14.7 | 15.7 | 12.5 | 14.5 | |
| Missing Data | 22.3 | 26.1 | 23.4 | 26.6 | 29.3 | 25.6 | |
|
| |||||||
| Plan to Graduate College
| |||||||
| Definitely Not or Probably Not | 19.4 | 22.0 | 18.1 | 17.8 | 19.5 | 12.92(12) | 19.4 |
| Probably | 23.8 | 22.5 | 17.8 | 23.4 | 22.5 | 22.1 | |
| Definitely | 51.4 | 50.0 | 58.2 | 52.9 | 52.5 | 52.9 | |
| Missing Data | 5.5 | 5.6 | 5.9 | 5.9 | 5.5 | 5.7 | |
|
| |||||||
| Evenings Out Per Week for Fun
| |||||||
| 0–1 | 16.0 | 16.2 | 18.8 | 16.8 | 21.9 | 30.40(12)** | 18.0 |
| 2–3 | 47.8 | 46.4 | 48.7 | 44.4 | 50.0 | 47.5 | |
| 4–7 | 33.5 | 32.4 | 28.7 | 33.5 | 23.6 | 30.3 | |
| Missing Data | 2.7 | 5.0 | 3.8 | 5.3 | 4.6 | 4.3 | |
|
| |||||||
| Lifetime Cigarette Use+
| |||||||
| No | 20.4 | 22.0 | 24.9 | 25.1 | 32.2 | 25.77(4)*** | 25.0 |
| Yes | 79.5 | 77.6 | 75.1 | 74.8 | 67.7 | 74.8 | |
| Missing Data | 0.1 | 0.4 | 0.0 | 0.1 | 0.2 | 0.2 | |
|
| |||||||
| Alcohol Use in Last 12 Months
| |||||||
| No | 8.5 | 10.4 | 7.6 | 9.1 | 13.0 | 15.34(8) | 9.8 |
| Yes | 90.0 | 87.2 | 89.5 | 89.2 | 84.9 | 88.1 | |
| Missing Data | 1.5 | 2.4 | 2.9 | 1.7 | 2.1 | 2.1 | |
|
| |||||||
| Cannabis Use in Last 30 Days
| |||||||
| No | 50.6 | 53.0 | 49.5 | 46.7 | 47.4 | 6.02(4) | 49.4 |
| Yes | 49.4 | 47.0 | 50.5 | 53.3 | 52.6 | 50.6 | |
|
| |||||||
| Friends Disapproval of Cannabis Use
| |||||||
| Don’t Disapprove | 62.8 | 58.1 | 59.3 | 62.4 | 66.8 | 21.67(12)* | 62.0 |
| Disapprove | 16.4 | 15.1 | 16.5 | 16.9 | 13.3 | 15.6 | |
| Strongly Disapprove | 9.4 | 12.2 | 10.1 | 7.0 | 9.3 | 9.6 | |
| Missing Data | 11.4 | 14.6 | 14.1 | 13.8 | 10.6 | 12.8 | |
|
| |||||||
| Use if Legal
| |||||||
| Would Not Use | 39.0 | 40.1 | 36.8 | 32.0 | 32.1 | 17.58(8)* | 35.9 |
| Would Use as Often | 45.2 | 44.1 | 45.5 | 47.3 | 47.9 | 46.0 | |
| Would Use More Often | 15.8 | 15.8 | 17.6 | 20.8 | 20.0 | 18.1 | |
Note. Rao-Scott Chi-squares (χ2) are design-based to correct for the complex survey design. Weighted percentages are rounded so they do not always add up to exactly 100%. Cannabis use and the “Use if Legal” variables were not missing any data in the analyses.
+
Since there were cells in the missing data row with zero-counts for lifetime smoking we removed the missing subgroup for chi-square analysis. Likewise, population density had no missing data so no missing data category was considered in chi-square analysis. MSA = metropolitan statistical area.
*
p< 0.05,
**
p< 0.01,
***
p< 0.001