%0 Journal Article
%T The association between quantity, frequency and duration of cocaine use during the heaviest use period and DSM-5 cocaine use disorder
%J Drug and alcohol dependence
%D 2020
%A Liu, Yiyang
%A Cheong, JeeWon
%A Vaddiparti, Krishna
%A Cottler, Linda B.
%V 213
%N 
%P e108114-e108114
%X BACKGROUND: Quantity (Q), frequency (F), and duration (D) of cocaine use during a person's heaviest use period are important aspects of cocaine use patterns that associated with cocaine use disorder (CocUD).   METHODS: A total 2988 lifetime cocaine users who met CocUD after the onset of cocaine heaviest use were identified from the National Epidemiologic Survey on Alcohol and Related Conditions-III (NESARC-III). QFD were each categorized into four levels. Hierarchical regressions were used to examine the association between QFD of cocaine use and CocUD. Two-way interactions between QFD were also examined.   RESULTS: As the level of cocaine use increased from low to very high, the prevalence of CocUD increased. Compared to people with low F, cocaine users with very high F were 12.09 times (95 %CI 6.33, 23.07) as likely to meet criteria for CocUD. Similarly, Q was associated with 4.84 (95 %CI 2.55, 9.18) times the risk of CocUD. D was not significantly associated with the risk of CocUD. Significant additive interaction was identified between Q*F on CocUD prevalence. Approximately one-third of the excess risk associated with having high Q & high F was due to the interactive effect.   CONCLUSION: Of these three cocaine use patterns, F had the strongest association with CocUD, followed by the Q. High Q and high F was a very dangerous pattern of cocaine use as the combination had as a synergistic effect on the risk of CocUD. It is important for intervention programs to focus on the reduction of both Q and F.<p /> <p>Language: en</p>
%G en
%I Elsevier Publishing
%@ 0376-8716
%U http://dx.doi.org/10.1016/j.drugalcdep.2020.108114