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. Author manuscript; available in PMC: 2013 Jun 1.
Published in final edited form as: Drug Alcohol Rev. 2011 Aug 8;31(4):431–438. doi: 10.1111/j.1465-3362.2011.00341.x

Table 1.

Substance Use Prior to Injury and During Two Control Periods (n in parentheses)

6 hours prior to
injury
Same time
yesterday
Same time
last week
Alcohol use only 19.3% (85) 8.6% (37) 9.3% (39)
Drug use only 3.9% (17) 6.8% (29) 5.7% (24)
Both alcohol & drug use 5.4% (24) 3.5% (15) 3.1% (13)

1–2 drinks 6.8% (30) 6.3% (27) 5.0% (21)
3–4 drinks 5.9% (26) 2.3% (10) 1.9% (8)
5+ drinks 11.6% (51) 3.0% (13) 4.5% (19)