Respondents with 12-month cannabis use disorder differed significantly from others (p<0.001) on all disability components (Table 4), with disability increasing significantly as cannabis disorder severity increased. For those with severe cannabis use disorder, the mean Mental Component Summary score was ~.75 s.d. below the mean. Greatest impairment was found in the role emotional functioning domain, with a score.85 s.d. below the mean. By the exact number of DSM-5 cannabis use disorder criteria, increasing disorder severity was also generally associated with greater disability (lower SF-12 scores).
