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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Am J Addict. 2013 Mar;22(2):87–92. doi: 10.1111/j.1521-0391.2013.00316.x

Table 3.

Mean number of drinks and mean number of drug categories reported in the 6 hours prior to injury

Alcohol Group Total Sample Unintentional Intentional
Alcohol only 5.08 4.88 6.25
Both alcohol and drugs 15.74 (p=.01) 16.22 (p=.06) 11.93 (p=.24)

Drug Group
Drugs only 1.65 1.60 2.00
Both drugs and alcohol 1.54 (p=.79) 1.38 (p=.53) 1.60 (p=.53)
*

Independent t-tests