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. Author manuscript; available in PMC: 2011 Mar 30.
Published in final edited form as: J R Stat Soc Ser A Stat Soc. 2010 Jan 1;173(1):145–164. doi: 10.1111/j.1467-985X.2009.00607.x

Table 1.

Estimated transition rates between stages of use of marijuana from ninth to 12th grade based on a latent two-stage model of use

Prior stage Transition rates for the following transitions:
9th–10th grade
 10th–11th grade
 11th–12th grade
No use Use No use Use No use Use
No use 0.921 0.079 0.932 0.068 0.967 0.033
Use 0.149 0.851 0.339 0.661 0.258 0.742