It was unexpected that perceived alcohol stigma was not significantly higher among those in the high comorbidity class than the other classes. The main distinguishing factor between the high comorbidity class and the internalizing class (which had the highest perceived alcohol stigma) was the higher probability of drug use disorders among those with high comorbidity. It could be that, because there is considerable stigma associated with drug addiction (Pescosolido et al. 1999), any effect of alcohol-related stigma pales in comparison among those with drug use disorders. It may be fruitful to employ measures of both perceived alcohol and drug addiction stigma in future research with comorbid populations.
