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Health statistics play a very important role in medical journals. Any scientific research design and experimental research are inseparable from statistical methods, and the correctness of statistical methods directly affects the quality of papers. In the process of editing manuscripts, we often encounter problems such as improper use of statistical methods.

The basis of mathematical statistics is probability theory, and the basis of statistical analysis of data is that small probability events cannot occur in an experiment. Generally speaking, the probability P≤0.05 or P≤0.0 1 is regarded as a small probability event [1]. When P > is obtained by hypothesis test (significance test); 0.05, which is considered as a high probability event, indicating that it is likely to happen in this experiment, so the hypothesis is accepted and the difference is not significant (the difference is not significant).