Despite these limitations, we found that the two diagnostic systems agreed to a great extent on the absence of a diagnosis and there was good correspondence between DSM-IV dependence and DSM-5 severe SUD. The DSM-IV abuse diagnosis tended to correspond to the DSM-5 moderate SUD diagnosis, in that half of the DSM-IV abuse diagnoses were moderate SUD under DSM-5. However, the other half split about equally into mild and severe SUD, so that DSM-IV abuse did not consistently map onto a single severity level in DSM-5.
