Table 2 shows the prevalence rates of DSM-IV abuse or dependence for alcohol, cocaine, opioids and cannabis and the corresponding prevalence rates for SUD under DSM-5. The prevalence rates for DSM-5 consistently exceed those for DSM-IV, but the differences are modest. The percent agreement between the diagnoses under DSM-IV and DSM-5 was very high, ranging from 92.9% to 99.0%. The corresponding kappa statistics ranged from 0.85 to 0.97, indicating a very high level of chance-corrected agreement between the presence or absence of DSM-IV vs. DSM-5 diagnoses.
