Parameter estimates for the four-class model are displayed in Table 2. Figure 1 graphs individual psychiatric disorder probabilities by latent class, which describe the probability of having a given psychiatry disorder conditional upon being a member of the class. We named the first class (approximately 1.8% of the sample) the “high comorbidity” class. Compared to all other classes, persons in this class had the highest probability of many internalizing (all except social phobia, specific phobia, GAD, and PTSD) and externalizing disorders (all except antisocial personality). The second class (approximately 10.6% of the sample) had externalizing comorbidity, which was predominantly reflected by a higher probability of antisocial personality disorder than the other classes and a relatively high probability (36%) of cannabis use disorder. Probabilities for all other externalizing disorders ranged from 6–19%, which were only exceeded by the high comorbidity class. The third class (approximately 14.4% of the sample) had predominantly internalizing comorbidity. Major depression, generalized anxiety, specific phobia, and PTSD were the most common disorders within this class, and there were low probabilities (<12%) for externalizing comorbidity. Finally, we deemed the fourth class to be “comorbidity unaffected”. The class had negligible probabilities for all psychiatric disorders (0–6%).
