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Predicted probability of alcohol use at each age based parameter estimates from Model 8. A low value for norms is 1 (range is 1-11) and a high value is 6 for time spent with teens who are using a low value is 0 and a high value is 1 (range 0-3) and the item for best friend use is dichotomous, hence we calculate predicted scores for ‘yes’ and ‘no’.
