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Published on: July 13, 2014
Matters arising: methodological issues on evaluating agreement between medical students' attitudes towards
Tianfei Yu1, Lei Yang2, Xinjie Jiang3
1College of Life Science and Agriculture Forestry, Qiqihar University, Qiqihar, 161006, China. yutianfei2001@163.com.
Background:
The purpose of this article is to discuss the statistical methods for agreement analysis used in Richelle's article (BMC Med Educ 22:335, 2022). The authors investigated the attitudes of final-year medical students regarding substance use during pregnancy and identified the factors that influence these attitudes.
Methods:
We found that Cohen's kappa value for measuring the agreement between these medical students' attitudes towards drugs/alcohol use during pregnancy was questionable. In addition, we recommend using weighted kappa instead of Cohen's kappa for agreement analysis at the presence of three categories.
Results:
The agreement improved from "good" (Cohen's kappa) to "very good" (weighted kappa) for medical students' attitudes towards drugs/alcohol use during pregnancy.
Conclusion:
To conclude, we recognize that this does not significantly alter the conclusions of the Richelle et al. paper, but it is necessary to ensure that the appropriate statistical tools are used.
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