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Comment
. 2003 Jun 7;326(7401):1267.
doi: 10.1136/bmj.326.7401.1267.

"Evidence of absence" can be important

Michael Joffe
Comment

"Evidence of absence" can be important

Michael Joffe. BMJ. .
No abstract available

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Comment on

References

    1. Alderson P, Chalmers I. Survey of claims of no effect in abstracts of Cochrane reviews. BMJ 2003;326: 475. (1 March.) - PMC - PubMed
    1. Altman DG, Bland JM. Absence of evidence is not evidence of absence. BMJ 1995;311: 485. - PMC - PubMed