Results 11 to 20 of about 50 (47)
Giving post hoc a good name [PDF]
The Journal of Thoracic and Cardiovascular Surgery, 2016 openaire +3 more sources
Post hoc tests in analysis of variance
Indian Journal of Occupational and Environmental Medicine, 2016 openaire +4 more sources
Post Hoc, Ergo Propter Hoc [PDF]
Survey of Ophthalmology, 2001 Three cases are described in which patients sought damages for retinal detachments that followed minor trauma. In fact, the traumatic incidents were not responsible for the detachments. Criteria for diagnosing traumatic retinal detachments are summarized, and ophthalmologists and attorneys are cautioned to be wary of post hoc reasoning.
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Post hoc power is not informative
Genetic Epidemiology, 2022AbstractPost hoc power estimates are often requested by reviewers and/or performed by researchers after a study has been conducted. The purpose of this commentary is to provide a heuristic explanation of why post hoc power should not be used. To illustrate our point, we provide a detailed simulation study of two essentially identical research ...
Lacey W. Heinsberg, Daniel E. Weeks
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"Post Hoc" and Hypoprothrombinemia
Annals of Internal Medicine, 1975Excerpt To the editor: We read with great interest "Warfarin-Chloral Hydrate Interaction" by Udall (Ann Intern Med81:341-344, 1974).
Theodore G. Tong +5 more
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JAMA, 1969
This communication describes a rare condition, unsuspected epidural abscess, present during an otherwise uncomplicated spinal anesthesia and emphasizes the absolutely essential role of postmortem examination in establishing both the cause and nature of concurrent but not causally related complications.
M. Jack Frumin, Edward J. Fine
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This communication describes a rare condition, unsuspected epidural abscess, present during an otherwise uncomplicated spinal anesthesia and emphasizes the absolutely essential role of postmortem examination in establishing both the cause and nature of concurrent but not causally related complications.
M. Jack Frumin, Edward J. Fine
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2020
The informal fallacy known as post hoc ergo propter hoc (literally: after this, therefore because of this) occurs when it is argued that event (B) is caused by event (A) because (B) occurred after (A). This fallacy occurs very commonly in medicine and health.
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The informal fallacy known as post hoc ergo propter hoc (literally: after this, therefore because of this) occurs when it is argued that event (B) is caused by event (A) because (B) occurred after (A). This fallacy occurs very commonly in medicine and health.
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Transplantation, 2015
Prospective clinical trials are constructed with high levels of internal validity. Sample size and power considerations usually address primary endpoints. Primary endpoints have traditionally included events that are becoming increasingly less common and thus have led to growing use of composite endpoints and noninferiority trial designs in ...
Titte R. Srinivas +3 more
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Prospective clinical trials are constructed with high levels of internal validity. Sample size and power considerations usually address primary endpoints. Primary endpoints have traditionally included events that are becoming increasingly less common and thus have led to growing use of composite endpoints and noninferiority trial designs in ...
Titte R. Srinivas +3 more
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Chest, 2014
I am surprised by the published conclusions of Hung et al 1 in a recent issue of CHEST (August 2013). The authors’ stated meth ods are not adequate to support their conclusion that hyperimmune IV immunoglobulin (H-IVIG) ben efi ts mortality if given within 5 days to patients with severe 2009 infl uenza A(H1N1) infection. The primary outcome analysis of
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I am surprised by the published conclusions of Hung et al 1 in a recent issue of CHEST (August 2013). The authors’ stated meth ods are not adequate to support their conclusion that hyperimmune IV immunoglobulin (H-IVIG) ben efi ts mortality if given within 5 days to patients with severe 2009 infl uenza A(H1N1) infection. The primary outcome analysis of
openaire +3 more sources
Educational and Psychological Measurement, 1982
Post-hoc blocking and the analysis of covariance (ANCOVA) are two alternative procedures that employ a concomitant variable as a means of increasing statistical power relative to the completely randomized design. The assumptions underlying the ANCOVA are generally considered to be too restrictive for most applications and the use of this statistical ...
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Post-hoc blocking and the analysis of covariance (ANCOVA) are two alternative procedures that employ a concomitant variable as a means of increasing statistical power relative to the completely randomized design. The assumptions underlying the ANCOVA are generally considered to be too restrictive for most applications and the use of this statistical ...
openaire +2 more sources