Table 4

Most Common Substance Combinations (N = 69,891)

Substance Combination
n
%a

Two substances (n = 20,789; 29.8%)


     Alcohol, Cocaine
8,374
12.0
     Alcohol, Marijuana
5,182
7.4
     Cocaine, Marijuana
2,371
3.4
     Alcohol, Opiates
916
1.3
     Cocaine, Opiates
593
0.9
     Amphetamines, Marijuana
449
0.6
     Opiates, Sedatives
445
0.6
     Alcohol, Sedatives
429
0.6
     Marijuana, Opiates
395
0.6
     Alcohol, Otherb
282
0.4
     Alcohol, Amphetamines
260
0.4
     Marijuana, Sedatives
187
0.3
     Cocaine, Amphetamines
159
0.2
     Marijuana, Otherb
104
0.2
     Combinations with n < 100
643
0.9
Three substances (n = 10,711; 15.3%)


     Alcohol, Cocaine, Marijuana
6,202
8.9
     Alcohol, Cocaine, Opiates
663
1.0
     Alcohol, Marijuana, Sedatives
483
0.7
     Alcohol, Sedatives, Otherb
430
0.6
     Alcohol, Marijuana, Amphetamines
388
0.6
     Alcohol, Opiates, Sedatives
327
0.5
     Alcohol, Cocaine, Sedatives
275
0.4
     Cocaine, Marijuana, Opiates
241
0.3
     Alcohol, Cocaine, Amphetamines
167
0.2
     Marijuana, Opiates, Sedatives
153
0.2
     Cocaine, Marijuana, Amphetamines
151
0.2
     Cocaine, Marijuana, Sedatives
129
0.2
     Alcohol, Marijuana, Otherb
125
0.2
     Alcohol, Cocaine, Otherb
118
0.17
     Cocaine, Opiates, Sedatives
118
0.17
     Combinations with n < 100
741
1.1

aPercentages are based on the entire client base and not just those abusing two or three substances.

bOther refers mostly to club drugs, such as ecstasy, GHB, Ketamine, and Rohypnol.

Kedia et al. Substance Abuse Treatment, Prevention, and Policy 2007 2:33   doi:10.1186/1747-597X-2-33

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