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. 2011 May 15;2:89–102. doi: 10.2147/SAR.S14871

Table 1.

TC frequency count

Drugs
TOB ALC MAR HAL PRP COC CRK HER AMP MET
TC frequency count
0 9 6 4 37 37 11 18 32 50 54
1 52 22 12 1 6 6 17 8 1 3
2 8 24 36 39 21 34 23 17 32 17
3 15 11 13 0 4 4 9 5 0 8
4 3 10 16 12 11 22 13 16 7 7
5 3 7 2 0 6 3 6 3 0 1
6 0 3 4 3 2 8 3 7 1 2
7 2 5 1 0 3 0 1 2 0 0
8 0 1 1 0 2 3 1 2 0 0
9 0 1 1 0 0 0 1 0 0 0
10 0 1 1 0 0 1 0 0 1 0
11 0 1 0 0 0 0 0 0 0 0
12 0 0 1 0 0 0 0 0 0 0

Abbreviations: TOB, tobacco; ALC, alcohol; MAR, marijuana; HAL, hallucinogens; PRP, prescription pill misuse; COC, cocaine; CRK, crack cocaine; HER, heroin; AMP, amphetamine; MET, methamphetamine; TC, transition count.