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An error occurred in the article entitled "Dihydroergotamine-Heparin Prophylaxis of Postoperative Deep Vein Thrombosis: A Multicenter Trial," published in the June 8 issue of The Journal (1984;251:2960-2966). On page 2964, the last sentence of the third paragraph should have read as follows: "While administration of dihydroergotamine mesylate, 0.5 mg, plus heparin sodium, 2,500 IU, and heparin sodium, 5,000 IU alone, seemed equally effective in reducing incidence of DVT, they were only marginally superior to placebo (P=.09)."
Incorrect Value. JAMA. 1984;252(10):1283. doi:10.1001/jama.1984.03350100017021