Table 1. UTHSCSA vehicular trauma with a positive ethanol, positive marijuana, or positive both ethanol and marijuana blood test.
UTHSCSA: University of Texas Health Science Center at San Antonio
| Year | Total trauma | Vehicular trauma (VT) | Positive ethanol (%) | Positive marijuana (%) | Positive ethanol and marijuana (%) |
| 2006 | 3165 | 1010 | 179 (17) | 30 (3) | 22 (2) |
| 2007 | 3551 | 995 | 209 (21) | 24 (2) | 39 (4) |
| 2008 | 3619 | 1024 | 213 (21) | 44 (4) | 36 (3) |
| 2009 | 3375 | 921 | 221 (24) | 41 (4) | 38 (4) |
| 2010 | 3357 | 971 | 224 (23) | 47 (5) | 33 (3) |
| 2011 | 3641 | 1077 | 228 (21) | 34 (3) | 28 (3) |
| 2012 | 4218 | 1173 | 221( 19) | 39 (3) | 26 (2) |
| TOTALS | 24926 | 7171 | 1495 (21) | 259 (4) | 222 (3) |