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KMID : 0859320080260040289
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Journal of the Korean Society for Therapeutic Radiology and Oncology
2008 Volume.26 No. 4 p.289 ~ p.294
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Statistical Errors in Papers Published in the Journal of the Korean Society for Therapeutic Radiology and Oncology
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Park Hee-Chul
Chung Eun-Ji
Chie Eui-Kyu
Yang Dae-Sik
Ahn Song-Vogue
Kim Eun-Seog
Pyo Hong-Ryull
Kang Jin-Oh
Choi Doo-Ho
Park Won
Ahn Seung-Do
Yun Hyong-Geun
Hong Se-Mie
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Abstract
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Purpose: To improve the quality of the statistical analysis of papers published in the Journal of the Korean Society for Therapeutic Radiology and Oncology (JKOSTRO) by evaluating commonly encountered errors.
Materials and Methods: Papers published in the JKOSTRO from January 2006 to December 2007 were reviewed
for methodological and statistical validity using a modified version of Ahn’s checklist. A statistician reviewed individual papers and evaluated the list items in the checklist for each paper. To avoid the potential assessment error by the statistician who lacks expertise in the field of radiation oncology; the editorial board of the JKOSTRO reviewed each checklist for individual articles. A frequency analysis of the list items was performed using SAS (version 9.0, SAS Institute, NC, USA) software.
Results: A total of 73 papers including 5 case reports and 68 original articles were reviewed. Inferential statistics
was used in 46 papers. The most commonly adopted statistical methodology was a survival analysis (58.7%). Only 19% of papers were free of statistical errors. Errors of omission were encountered in 34 (50.0%) papers. Errors of commission were encountered in 35 (51.5%) papers. Twenty-one papers (30.9%) had both errors of omission and commission.
Conclusion: A variety of statistical errors were encountered in papers published in the JKOSTRO. The current
study suggests that a more thorough review of the statistical analysis is needed for manuscripts submitted in the JKOSTRO.
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KEYWORD
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Statistics, Radiation Oncology
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