Usually, the first table of medical research papers summarizes the baseline data of the research object, which is also called Table 1. Tableone command also has some defects, such as it can't provide statistics for comparison between groups, and it is also a variable that conforms to normal distribution.

It will be expressed in the form of mean (standard deviation), which is normal for SCI articles. Domestic magazines need us to provide statistical data for comparison between groups. Variables that conform to normal distribution are usually expressed in the form of mean and standard deviation.

This paper studies the presentation skills of object baseline data.

Numerical variables, which are normal, are expressed by mean (standard deviation), and the differences between groups are compared by t test; The non-normality was expressed by the median (interquartile interval), and the differences between groups were compared by Man-Whitney U test. Classification variables are expressed by frequency (percentage), and the differences between groups are compared by chi-square test or exact probability method.

Multi-group comparison, numerical variable, normal, expressed by mean (standard deviation), and differences between groups are compared by analysis of variance; Non-normality is expressed by median (interquartile interval), differences between groups are compared by kruskal.test, classified variables are expressed by frequency (percentage), and differences between groups are compared by chi-square test or exact probability method.