Trajectories of marijuana use from adolescence to young adulthood: predictors and outcomes.

@article{Windle2004TrajectoriesOM,
  title={Trajectories of marijuana use from adolescence to young adulthood: predictors and outcomes.},
  author={Michael Windle and Margit Wiesner},
  journal={Development and psychopathology},
  year={2004},
  volume={16 4},
  pages={1007-27}
}
Semiparametric group-based mixture modeling was used with data from an adolescent school sample (N = 1205) for three purposes. First, five trajectory groups were identified to characterize different patterns of change in the frequency of marijuana use across four waves of assessment during adolescence. These trajectory groups were labeled Abstainers, Experimental Users, Decreasers, Increasers, and High Chronics. Second, trajectory group comparisons were made across eight adolescent risk factors… CONTINUE READING

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