Reporting data analysis methods in high-impact respiratory journals

Abstract

Data analysis methods play an important role in respiratory research. We evaluated the application and complexity of data analytical methods in high-impact respiratory journals and compared the statistical reporting in these respiratory articles with reports published in other eminent medical journals. This study involved a total of 160 papers published in 2015 in theEuropean Respiratory Journal, American Journal of Respiratory and Critical Care Medicine, ChestandThorax, and 680 papers published between 2007–2015 in other medical journals including theLancetandNew England Journal of Medicine. We manually reviewed the articles to determine the way in which they reported the methods applied in data analysis. The statistical intensity in the respiratory journals was equal to that in eminent medical journals. Traditional ways of testing statistical significance were widely used in respiratory articles. Statistical procedures were not always described in sufficient detail, and the prominent respiratory journals did not display different profiles with respect to their statistical content. Readers of the prominent respiratory journals need to possess a substantial level of statistical expertise if they wish to critically evaluate the design, methodology, data analysis and interpretation of the findings published in these journals.

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