Scott Allen, MD
Allen S. Correction: Effect of Neuroimaging Studies on Acute Ischemic Stroke. Ann Intern Med. 1996;125:428. doi: 10.7326/0003-4819-125-5-199609010-00037
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Published: Ann Intern Med. 1996;125(5):428.
TO THE EDITOR:
Salerno and colleagues  report that of their total sample of 206 patients, the class of stroke was “unknown cause” in 67 patients (32.5%). Classification was based on the results of the physical examination at presentation, the first neuroimaging study, and any ancillary tests done before a second neuroimaging study. They also report that of patients who had only one neuroimaging study, 23 cases (35.4%) were initially classified as having an unknown cause. According to the data presented in Table 3, 75 (53.6%) of the patients who had two or more neuroimaging studies were classified as having an unknown cause. The sum of these two groups (23 + 75) is far greater than the reported overall group (n = 67). This suggests a possible error in the reporting of their data.
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