Skip to main content

Table 4 Direct and specific indirect effects of youth demographics, psychological constructs of sensation-seeking, internalizing, and externalizing, and age at first use on 30-day tobacco and cannabis use status

From: Predictors of cannabis and tobacco co-use in youth: exploring the mediating role of age at first use in the population assessment of tobacco health (PATH) study

Variables Direct effect B (SE) 95% CI OR 95% CI
Co-use (as compared to single substance use)
→ Age at first use − 0.49 (0.15)* − 1.78, − 0.20 0.62 0.46, 0.82
→ Internalizing 0.01 (0.08) − 0.14, 0.16 1.01 0.87, 1.18
→ Externalizing 0.11 (0.12) − 0.12, 0.33 1.11 0.89, 1.40
→ Sensation seeking 0.06 (0.03)* 0.01, 0.12 1.06 1.01, 1.13
→ Grade 0.15 (0.07)* 0.01, 0.29 1.16 1.01, 1.34
→ Sex 0.23 (0.16) − 0.08, 0.53 1.25 0.92, 1.71
→ Hispanic − 0.11 (0.17) − 0.44, 0.22 0.90 0.65, 1.25
→ Race − 0.14 (0.09) − 0.32, 0.05 0.87 0.73, 1.05
Age at first use
→ Internalizing − 0.09 (0.05) − 0.19, 0.00 0.91 0.83, 1.00
→ Externalizing − 0.11 (0.06) − 0.23, 0.01 0.90 0.80, 1.01
→ Sensation seeking − 0.02 (0.02) − 0.05, 0.01 0.99 0.96, 1.01
→ Grade 0.67 (0.03)* 0.62, 0.73 1.96 1.86, 2.07
→ Sex 0.30 (0.08)* 0.15, 0.46 1.35 1.16, 1.58
→ Hispanic 0.03 (0.09) − 0.14, 0.20 1.03 0.87, 1.22
→ Race − 0.13 (0.05)* − 0.22, − 0.03 0.88 0.80, 0.97
Through age at first use Indirect effect B (SE) 95% CI   
→ Internalizing 0.04 (0.03) − 0.01, 0.10
→ Externalizing 0.05 (0.03) − 0.01, 0.12
→ Sensation seeking 0.01 (0.01) − 0.01, 0.02
  1. Data are from the Population Assessment of Tobacco Health (PATH) study. *p < 0.05