Table 2.
Group 1a | Group 2b | Group 3c | Group 4d | χ2 | |
---|---|---|---|---|---|
Heavy Drinking | 53.83*** | ||||
African American | 51.1* | 25.7 | 14.5 | 8.7* | |
White | 24.6 | 29.9 | 14.7 | 30.8 | |
Regular Marijuana Use | 10.01* | ||||
African American | 50.0 | 9.8 | 30.8* | 9.4 | |
White | 62.1 | 8.5 | 19.0 | 10.4 |
Group 1 = nonheavy drinkers/nondrinkers or nonregular users/nonusers.
Group 2 = Adolescent-limited heavy drinkers or Adolescent-limited regular users.
Group 3 = Late-onset heavy drinkers or Late-onset regular users.
Group 4 = Early-onset heavy drinkers or Early-onset regular users.
p < .05,
p < .001 for overall chi-squared analysis as well as for the examination of standardized residuals within trajectory groups.