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

Table 3.

TR frequency count of respondents in each percentile bracket

Sample size Drugs
TOB ALC MAR HAL PRP COC CRK HER AMP MET

83 86 88 55 55 81 74 60 42 38
TR frequency count
TR = 0 52 22 12 1 6 6 17 8 1 3
0.0000 < TR < 0.0250 4 9 9 6 2 4 0 1 6 0
0.0250 <=TR < 0.0286 2 3 11 16 4 9 0 4 13 3
0.0286 <= TR < 0.0323 0 9 12 8 8 2 0 2 5 2
0.0323 <= TR < 0.0435 2 3 4 8 2 18 9 3 8 0
0.0435 <= TR < 0.0625 13 9 11 1 3 2 3 5 0 8
0.0625 <= TR < 0.0769 1 5 10 4 4 4 5 4 2 5
0.0769 <= TR < 0.0932 4 6 5 8 8 11 5 10 4 3
0.0932 <= TR < 0.1197 3 6 4 1 9 10 5 8 1 6
0.1197 <= TR < 0.1613 2 9 5 2 4 8 10 9 1 3
0.1613 <= TR 0 5 5 0 5 7 20 6 1 5

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