期刊
ANNALS OF INTERNAL MEDICINE
卷 136, 期 2, 页码 122-126出版社
AMER COLL PHYSICIANS
DOI: 10.7326/0003-4819-136-2-200201150-00009
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Background: The use of complex statistical models to adjust for confounding is common in medical research. Objective: To determine the frequency and adequacy of adjustment for confounding in medical articles. Design: Cross-sectional survey. Setting: 34 scientific medical journals with a high impact factor. Measurements: Frequency of reporting on methods used to adjust for confounding in 537 original research articles published in January 1998. Results: Of the 537 articles, 169 specified that adjustment for confounding was used. In 1 paper in 10, it was unclear which statistical method was used or for which variables adjustment was made. In 45% of papers, it was not clear how multicategory or continuous variables were treated in the analysis. inadequate reporting was less frequent if an author was affiliated with a department of statistics, epidemiology, or public health and if articles were published in journals with a high impact factor. Conclusions: Details of methods used to adjust for confounding are frequently not reported in original research articles.
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