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Erratum

Correction: Errata
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In the September 2003 issue, in the article by Culebras et al., “The Antiemetic Efficacy of Droperidol Added to Morphine Patient-Controlled Analgesia: A Randomized, Controlled, Multicenter Dose-Finding Study” (Anesth Analg 2003;97:816–21), there was an incorrect statement in the last sentence in the first paragraph in the Discussion section on page 820: “However, if there were no serious neurological or cardiac adverse events among 255 patients, we may be 95% confident that with these droperidol regimens, extrapyramidal symptoms or cardiac arrhythmia will not occur more often than in 0.012% (9).” Since the rule of three states that if none of n patients shows the event about which we are concerned, we can be 95% confident that the chance of this event is at most three in n (i.e. 3/n) (9). Thus, the correct sentence should be: “However, if there were no serious neurological or cardiac adverse events among 255 patients, we may be 95% confident that with these droperidol regimens, extrapyramidal symptoms or cardiac arrhythmia will not occur more often than in 3/225 = 0.012 = 1.2% (9).” The authors apologize for the error.

© 2004 International Anesthesia Research Society