The findings of this study contrast with National Survey on Drug Use and Health (NSDUH) data suggesting that the prevalence of marijuana use increased only 12% from 2002 to 2012,6 and that the prevalence of marijuana use disorders did not increase (1.6% in 200281 and 1.5% in 201270). The explanation of these different findings is not clear. The AUDADIS reliability and validity are supported through extensive published testing.41–50 The AUDADIS includes many more items on marijuana use disorders than the NSDUH instrument; thus, more thorough probing of substance disorder criteria may give AUDADIS better sensitivity than the NSDUH measure,82 potentially enabling NESARC/NESARC-III to better detect increases in marijuana use disorder over time than NSDUH. The NESARC/NESARC-III findings are more consistent than NSDUH with other studies showing increases (eg, marked national increases of cannabis use disorders in US veterans [2002–2009],54 a 62% increase in emergency department visits involving marijuana [2004–2011],19 and a 3-fold increase in cannabis involvement in fatal car crashes [1999–2010]).17 The consistency of the NESARC/NESARC-III findings with these other national increases supports the validity of the NESARC/NESARC-III findings. Further,
