For 10th graders, lifetime cocaine use has more than doubled since 1992, reaching 7.7 percent, the highest level in a decade, and lifetime use of crack by 10th graders has likewise more than doubled, reaching 4.0 percent.
is this the number of tenth graders that have used cocaine since birth? what does lifetime cocaine use mean?
12xu
out
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For 10th graders, lifetime cocaine use has more than doubled since 1992, reaching 7.7 percent, the highest level in a decade, and lifetime use of crack by 10th graders has likewise more than doubled, reaching 4.0 percent. is this the number of tenth graders that have used cocaine since birth? what does lifetime cocaine use mean? 12xu out