[A review of statistical analysis methods in measurement data].

Enumeration data is consisted of categorical variable. It is obtained by counting the frequency of the inhomogeneous data. In clinical research, the collected data cover quite of categorical variables. Composed of those categorical variables, the enumeration data had to be correspondingly analyzed with special statistical methods on the ground of their design methods. The statistical methods of measurement data include descriptive statistics and inferential statistics. Descriptive statistics is mainly used to measure the relative number such as rate, proportion and ratio. Inferential statistics is mainly employed to estimate the confidence limit such as estimating the 95% confidence interval of rate and to have the hypothesis testing in the example of having chi-square test etc. By highlighting the specific statistical methods of enumeration data, this review intends to help the clinicians and researchers select correct statistical methods in accordance with enumeration data.