Research design and statistical methods in Chinese medical journals.
International Congress on Peer Review in Biomedical Publication. Prague, CZE, 1997/09.
Context. - Study design and statistical analyses have improved in journals published in Western countries, but the type of research designs and statistical methods used in medical journals outside Western countries has not been assessed.
- To determine the frequency of research designs and statistical techniques used in Chinese medical journals, types of statistical errors present, and trends over a 10-year period.
- Evaluation of all original articles published in 5 leading journals in 1985 (N=640) and in 1995 (N=954).
Main Outcome Measures
- Research designs and statistical methods.
- Compared with 1985, significant improvement was seen in 1995 ; the percentages of original articles reporting clinical trials, prospective studies, or basic science research increased from 18% to 31% (P<. 001), the proportion of papers using statistical tests increased from 40% to 60% (P<. 001), more sophisticated statistical methods were used, and of those articles using statistics, the proportion using appropriate methods increased from 22% to 46% (P<. 001).
In both years, the most commonly used statistical methods were t tests and contingency tables.
The most common errors were presentation of Pvalues without specifying the test used, use of multiple t tests instead of analysis of variance, and use of unpaired t tests when paired tests were required. (...)
Mots-clés Pascal : Article, Médecine, Etude statistique, Chine, Asie, Exploration, Méthode, Homme, Littérature scientifique
Mots-clés Pascal anglais : Article, Medicine, Statistical study, China, Asia, Exploration, Method, Human, Scientific literature
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0446246
Code Inist : 002B30A09. Création : 25/01/1999.