After California enacted a law raising the minimum tobacco sales age to 21, the rate of retailers illegally selling tobacco products to children decoys under age 18 statistically decreased from 10.3% before T21 law to 5.7% after T21 (P=0.002).

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After California enacted a law raising the minimum tobacco sales age to 21, the rate of retailers illegally selling tobacco products to children decoys under age 18 statistically decreased from 10.3% before T21 law to 5.7% after T21 (P=0.002).