ALFRED E. CHANG, M.D.
To the editor: I want to correct a statement published in our article in December 1979 (1). In the Results section, we said: "In placebo trials, where the plasma concentrations were 0 ng/mL, patients experienced nausea or vomiting, or both, in 65 of 90 time intervals, an incidence of 72%. " Table 2 indicates that tetrahydrocannabinol (THC) concentrations in placebo trials were 0 ng/mL and implies that all placebo samples were assayed. However, not all placebo blood samples were assayed. Actually, 36 placebo samples were analyzed and had no detectable plasma THC, so we assumed that all other placebo samples
ALFRED E. CHANG. Correction: Delta-9-Tetrahydrocannabinol as an Antiemetic in Methotrexate Treatment. Ann Intern Med. 1985;102:726. doi: 10.7326/0003-4819-102-5-726_2
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Published: Ann Intern Med. 1985;102(5):726.
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