title: [Appropriate application of statistical analysis method in medical science and technology articles].
abstract: OBJECTIVE
  To introduce the appropriate application of statistical analysis method in medical science and technology articles.
  
  
  METHODS
  Explained the correct application of statistical theories in statistical package, statistical analysis methods and test criterion which compose the basic statistical content in an article.
  
  
  RESULTS
  If the distribution of numerical variable is normal, mean and standard deviance can be used to describe this variable. In the same way, t test and analysis of variance (ANOVA) can be used to test the difference of mean in each group. If it is not normal, median and range can be used to describe the variable and rank sum test can be used to test the difference of distribution in each group. Categorical variable can be described by rate, proportion and ratio. There are chi-square test, fisher's exact test and rank sum test to test the difference of rates.
  
  
  CONCLUSIONS
  It is the key of choosing rational statistical methods to distinguish the type of design and variable.
authors.affiliation: Department of Chinese Journal of Reparative and Reconstructive Surgery, West China Hospital, Sichuan University, Chengdu Sichuan, 610041, P. R. China.
authors.forename: Li
authors.initials: L
authors.lastname: Gou
authors.forename: Jun
authors.initials: J
authors.lastname: Yu
authors.forename: Zhiming
authors.initials: Z
authors.lastname: Yang
mesh_terms: D000704:Analysis of Variance; D016009:Chi-Square Distribution; D016011:Normal Distribution; D012107:Research Design; D012984:Software; D013223:Statistics as Topic