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July 14, 2015

Incorrect Labels in Text and in Table 1 Column Headings

JAMA. 2015;314(2):188. doi:10.1001/jama.2015.7958

In the Research Letter entitled “Cannabinoid Dose and Label Accuracy in Edible Medical Cannabis Products” published in the June 23/30, 2015, issue of JAMA (2015;313[24]:2491-2493. doi:10.1001/jama.2015.6613), there are incorrect labels in the text and in Table 1. The first paragraph of the Results section should be “Of 75 products purchased (47 different brands), 17% were accurately labeled, 23% were underlabeled, and 60% were overlabeled with respect to THC content (Table 1). The greatest likelihood of obtaining underlabeled products was in Los Angeles and overlabeled products in Seattle (χ2 = 12.94, P = .01).” In the second paragraph of the Results section, the third sentence should be “Four products were underlabeled and 9 were overlabeled for CBD.” In Table 1, the column 3 heading should be “Underlabeledb” and the column 4 heading should be “Overlabeledc.” This article was corrected online.