Allocation bias

Allocation bias results when treatment comparisons fail to ensure that, apart from the treatments being compared, ‘like will be compared with like’. See also N-of-1 crossover, Crossover tests, Cluster allocation and Factorial design.


JLL Essay
2.2 The need to compare like-with-like in treatment comparisons

Comparing like with like

 

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Van Helmont JB (1648)
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Starkey G (1657)
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Massey I (1723)
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Lind J (1753)
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Mesmer FA (1781)
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Parry CH (1786)
Experiments relative to the medical effects of Turkey Rhubarb, and of the English Rhubarbs, No. I and No. II made on patients of the Pauper Charity. Letters and Papers of the Bath Society 11:431-453.

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Lesassier Hamilton A (1816)
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Löhner G, on behalf of a Society of truth-loving men (1835)
Die Homoöopathischen Kochsalzversuche zu Nürnberg [The homeopathic salt trials in Nurnberg]. Nürnberg in März.

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Tessier JP (1852)
De la médication homoeopathique [On homoeopathic medication]. Paris: JB Ballière.

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Balfour TG (1854)
Quoted in West C. Lectures on the Diseases of Infancy and Childhood. London, Longman, Brown, Green and Longmans, p 600.

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Thompson T (1859)
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Semmelweis I (1861)
Die Aetiologie, der Begriff und die Prophylaxis des Kindbettfiebers. [The etiology, concept, and prophylaxis of childbed fever]. Budapest and Vienna; Hartleben.

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Wanscher O (1877)
Om Diphteritis og Croup - særligt med hensyn til Tracheostomien ved samme. [On diphtheria and croup - especially regarding tracheostomy in this condition]. Disputats [Thesis]. Jacob Lund: Kjøbenhavn, p 67-68.

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Keith T (1878)
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Hill B (1879)
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Storke EF, Martin R, Rosenkrans EM, Ford J, Schloemilch A, McDermott GC, Carlson OW (1880)
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Champneys FH (1881)
On artificial respiration in still born children. The amount of ventilation secured by different methods. An experimental enquiry. Medical and Chirurgical Transactions 64 :41-86.

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Pasteur L (1881)
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Cook County Board of Commissioners (1882)
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Fry HD (1887)
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