Absence of evidence is not evidence of absence

  • Lucía Inés Arroyo Clínica La Estancia, Popayán-Cauca
  • Jose Andres Calvache Universidad del Cauca, Departamento de Anestesiología Anesthesiology/Biostatistics Departments, Erasmus University Medical Centre. http://orcid.org/0000-0001-9421-3717
Keywords: Positive results, evidence, statistical significance

Abstract

When a study ends with statistically significant results we have to judge whether results are clinically relevant and useful in our daily practice. A “Negative” result of a study does not imply that this is the truth. This paper illustrates with an example that the absence of evidence does not equal evidence of absence.

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References

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Sedgwick P. Absence of evidence is not evidence of absence. BMJ 2011; 342:d312

Altman DG, Bland JM. Absence of evidence is not evidence of absence. BMJ 1995;311:485.

Kelly H, Brady MC, Enderby P. Speech and language therapy for aphasia following stroke. Cochrane Database of Systematic Reviews 2010, Issue 5. Art. No.: CD000425. DOI: 10.1002/14651858.CD000425.pub2.

How to Cite
(1)
Arroyo, L. I.; Calvache, J. A. Absence of Evidence Is Not Evidence of Absence. Rev. Fac. Cienc. Salud Univ. Cauca 2011, 13, 18-19.
Published
2011-03-01
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