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Editorial
. 2004 Feb 28;328(7438):476-7.
doi: 10.1136/bmj.328.7438.476.

Absence of evidence is not evidence of absence

Phil Alderson
Editorial

Absence of evidence is not evidence of absence

Phil Alderson. BMJ. .
No abstract available

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Figures

Figure 1
Figure 1
Relation between confidence interval, line of no effect, and thresholds for important differences (adapted from Armitage, Berry, and Matthews4)
See this image and copyright information in PMC

Comment in

References

    1. Altman DG, Bland JM. Absence of evidence is not evidence of absence. BMJ 1995;311: 485. - PMC - PubMed
    1. Kamali A, Quigley M, Nakiyingi J, Kinsman J, Kengeya-Kayondo J, Gopal R, et al. Syndomic management of sexually-transmitted infections and behaviour change interventions on transmission of HIV-1 in rural Uganda: a community randomised trial. Lancet 2003;361: 645-52. - PubMed
    1. Greene WL, Concato J, Feinstein AR. Claims of equivalence in medical research: are they supported by the evidence? Ann Intern Med 2000;132: 715-22. - PubMed
    1. Armitage P, Berry G, Matthews JNS. Statistical methods in medical research. 4th ed. Oxford: Blackwell Science, 2002.
    1. Enstrom JE, Kabat GC. Environmental tobacco smoke and tobacco related mortality in a prospective study of Californians, 1960-98. BMJ 2003;326: 1057-60. - PMC - PubMed

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