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Table 4 Most Common Substance Combinations (N = 69,891)

From: Mono- versus polydrug abuse patterns among publicly funded clients

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

  1. aPercentages are based on the entire client base and not just those abusing two or three substances.
  2. bOther refers mostly to club drugs, such as ecstasy, GHB, Ketamine, and Rohypnol.