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Survey of the quality of experimental design, statistical analysis and reporting of research using animals

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Kilkenny, Carol, Parsons, Nicholas R., Kadyszewski, Ed, Festing, Michael F. W., Cuthill, Innes C., Fry, Derek, Hutton, Jane and Altman, Douglas G. (2009) Survey of the quality of experimental design, statistical analysis and reporting of research using animals. PL o S One, Vol.4 (No.11). Article no. e7824. doi:10.1371/journal.pone.0007824

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Official URL: http://dx.doi.org/10.1371/journal.pone.0007824

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Abstract

For scientific, ethical and economic reasons, experiments involving animals should be appropriately designed, correctly analysed and transparently reported. This increases the scientific validity of the results, and maximises the knowledge gained from each experiment. A minimum amount of relevant information must be included in scientific publications to ensure that the methods and results of a study can be reviewed, analysed and repeated. Omitting essential information can raise scientific and ethical concerns. We report the findings of a systematic survey of reporting, experimental design and statistical analysis in published biomedical research using laboratory animals. Medline and EMBASE were searched for studies reporting research on live rats, mice and non-human primates carried out in UK and US publicly funded research establishments. Detailed information was collected from 271 publications, about the objective or hypothesis of the study, the number, sex, age and/or weight of animals used, and experimental and statistical methods. Only 59% of the studies stated the hypothesis or objective of the study and the number and characteristics of the animals used. Appropriate and efficient experimental design is a critical component of high-quality science. Most of the papers surveyed did not use randomisation (87%) or blinding (86%), to reduce bias in animal selection and outcome assessment. Only 70% of the publications that used statistical methods described their methods and presented the results with a measure of error or variability. This survey has identified a number of issues that need to be addressed in order to improve experimental design and reporting in publications describing research using animals. Scientific publication is a powerful and important source of information; the authors of scientific publications therefore have a responsibility to describe their methods and results comprehensively, accurately and transparently, and peer reviewers and journal editors share the responsibility to ensure that published studies fulfil these criteria.

Item Type: Journal Article
Subjects: Q Science > Q Science (General)
Divisions: Faculty of Medicine > Warwick Medical School > Health Sciences
Faculty of Science > Statistics
Faculty of Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH): Animal experimentation -- Methodology
Journal or Publication Title: PL o S One
Publisher: Public Library of Science
ISSN: 1932-6203
Official Date: 30 November 2009
Dates:
DateEvent
30 November 2009Published
Volume: Vol.4
Number: No.11
Number of Pages: 11
Page Range: Article no. e7824
DOI: 10.1371/journal.pone.0007824
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
Funder: National Centre for the Replacement, Refinement, and Reduction of Animals in Research (Great Britain) (NC3R), National Institutes of Health (U.S.). Office of Laboratory Animal Welfare (NIH/OLAW)

Data sourced from Thomson Reuters' Web of Knowledge

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