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J Thorac Cardiovasc Surg 2009;137:254-255
© 2009 The American Association for Thoracic Surgery

Letter to the Editor

Remediastinoscopy: A statistical reinterpretation

Eric Lim, MB, ChB, MD, MSc, (Biostatistics), FRCS (C-Th), Michael Dusmet, MD, FMH

The Royal Brompton Hospital, London, UK

The first 20% of the full text of this article appears below.

To the Editor:

We read with considerable interest the study by Marra and colleagues1Go in the April 2008 issue, "Remediastinoscopy in Restaging of Lung Cancer After Induction Therapy." We do, however, have some issues with the statistical interpretation of their results.

First, there is the reporting of a P value of 0.0000 in their Table 2.1Go A P value is the probability of observing the value or more extreme values given that the null hypothesis is true (ie, no true difference). Marra and colleagues1Go give this as 0, which is not possible, when what they mean is that the probability (P value) is less than .0001. They do not state in . . . [Full Text of this Article]


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Reference values: No need for confusion
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J. Thorac. Cardiovasc. Surg. 2009 137: 1572-1573. [Extract] [Full Text] [PDF]



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 J. Thorac. Cardiovasc. Surg.Home page
N. A. Obuchowski
Reference values: No need for confusion.
J. Thorac. Cardiovasc. Surg., June 1, 2009; 137(6): 1572 - 1573.
[Full Text] [PDF]


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