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Table 2 Changes in technical and conceptual legal knowledge about most commonly misused drugs. This includes matched McNemar’s χ 2 tests between pre- and post-ESCUDO training (n = 1750)

From: Measuring improvement in knowledge of drug policy reforms following a police education program in Tijuana, Mexico

Variable Before training After training p value
No. % No. % McNemar’s χ 2
Exact knowledge of the law—what a suspect can currently possess under the law of Baja California
 Syringes (as many as they want) 908 55.91 1470 90.52 < 0.001
 Heroin (50 mg) 142 8.42 1194 70.82 < 0.001
 Methamphetamine (40 mg) 125 7.46 1144 68.26 < 0.001
 Marijuana (5 g) 155 9.18 889 52.67 < 0.001
Decriminalization concept—what a suspect can currently possess (any quantity)
 Syringes 1085 66.81 1556 95.81 < 0.001
 Heroin 196 11.63 1541 91.4 < 0.001
 Methamphetamine 201 11.99 1495 89.20 < 0.001
 Marijuana 282 16.71 1545 91.53 < 0.001