Table 3.
Adjusted Odds Ratios Predicting Past Year Marijuana Initiation
| Age Category | Early Adolescents (12–14) OR, (95%CI) |
Late Adolescents (15–17) OR, (95%CI) |
Young Adults (18–25) OR, (95%CI) |
|---|---|---|---|
| Lives in a medical marijuana state | 1.04 (.90–1.21) | .97 (.87–1.08) | 1.11 (1.02–1.22)* |
| Year of Survey (vs. 2004) | |||
| 2005 | .92 (.78–1.08) | .89 (.81–.97)* | .98 (.84–1.14) |
| 2006 | .80 (.69–.93)** | .95 (.87–1.03) | 1.03 (.90–1.18) |
| 2007 | .80 (.67–.96)* | .96 (.87–1.06) | 1.09 (.97–1.21) |
| 2008 | .95 (.82–1.10) | .95 (.87–1.04) | 1.07 (.94–1.22) |
| 2009 | 1.04 (.88–1.23) | 1.04 (.96–1.13) | 1.33 (1.19–1.49)*** |
| 2010 | 1.10 (.94–1.29) | 1.03 (.94–1.12) | 1.21 (1.06–1.38)** |
| 2011 | 1.06 (.90–1.25) | 1.03 (.94–1.13) | 1.29 (1.15–1.45)*** |
| 2012 | 1.02 (.86–1.21) | 1.00 (.91–1.10) | 1.18 (1.04–1.34)* |
| 2013 | .96 (.81–1.14) | 1.01 (.93–1.09) | 1.19 (1.05–1.34)** |
| Individual-Level Predictors | |||
| Female | 1.10 (1.04–1.16)** | 1.14 (1.10–1.19)*** | 1.28 (1.20–1.36)*** |
| Ethnicity/Race (vs. White Non-Hispanic) | |||
| African-Am erican/Black | .78 (.68–.90)** | .92(.83–1.02)† | 1.10(1.02–1.18)* |
| Hispanic/Latino | .89 (.78–1.02)† | .86(.80–.93)*** | .92 (.86–.97)** |
| Other/Multi | 1.05 (.88–1.25) | .87 (77–.99)* | .97 (.88–1.06) |
| Income (vs. <$20,000) | |||
| $20,000–49,999 | .93 (.84–1.03) | 1.02 (.96–1.09) | .66(.61–.70)*** |
| $50,000–74,999 | .74(.65–.85)*** | 1.06 (.98–1.15) | .76 (.69–.84)*** |
| $75,000–99,999 | .70 (.59–.84)*** | 1.12(1.03–1.22)** | .83 (74–.94)** |
| $100,000+ | .55 (.47–.64)*** | 1.21(1.11–1.32)*** | .95 (.88–1.03) |
| Has one or more children | .29 (.26–.32)*** | ||
| Ever been married | .36(.31–.42)*** | ||
| Parents monitor screen time and/or enforce curfew | .71 (.65–.77)*** | 1.01 (.97–1.05) | |
| Was in a group fight | 2.81 (2.56–3.10)*** | 1.53(1.44–1.61)*** | |
| Not in school, did not work last week | .57(.52–.62)*** | ||
| Poor or fair health | 1.32(1.11–1.56)** | 1.13(1.01–1.27)* | .97 (.85–1.11) |
| Lives in an urban area | 1.34(1.17–1.54)*** | 1.26(1.18–1.35)*** | 1.08 (.99–1.18)† |
| State-Level Predictors | |||
| Marijuana decriminalized | 1.16 (.80–1.70) | 1.04 (.92–1.18) | 1.09 (.96–1.23) |
| Per capita drug courts | 1.05 (.97–1.15) | 1.01 (.98–1.06) | .98 (.94–1.02) |
Note: Standard errors are clustered at the state level.
†
p<.10
*
p<.05
**
p<.01
***
p<.001. Empty cells were not asked of that age group or had insufficient N for analysis. Fixed effects of state of residence included in analysis, not display