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James Lind Library
Illustrating the development of fair tests of treatments in health care
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Cobb LA, Thomas GI, Dillard DH, Merendino KA, Bruce RA (1959)
An Evaluation of Internal-Mammary-Artery Ligation by a Double-Blind Technic. New England Journal of Medicine 260:1115-1118.
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Key passage(s)
RELEVANT TOPICS
Allocation bias
Observer bias
Key articles
Wartolowska K, Beard DJ, Carr AJ (2017).
The use of placebos in controlled trials of surgical interventions: a brief history.
All topics
Fair tests of treatments
The need to address treatment uncertainties
Principles of Testing
Treatment comparisons are essential
Placebo effects
Dramatic effects
Treatment comparisons must be fair
Biases
Design bias
Allocation bias
N-of-1 crossover
Cluster allocation
Factorial design
Crossover tests
Co-intervention bias
Observer bias
Double dummy
Analysis bias
Biases in judging unanticipated possible effects
Reporting bias
Biases in systematic reviews
Researcher/sponsor bias and fraud
The play of chance
Recording and interpreting numbers
Quantifying uncertainty
Using meta-analysis
Bringing it all together for the benefit of patients and the public
Improving reports of research
Preparing and maintaining systematic reviews
Using the results of research
