Statistical methods
REGRESSION
Continuous variables that conform to normal distribution are expressed as mean and SD values, while other continuous variables are expressed as median (25-75 percentile). Categorical variables are expressed as percentages. Single-factor analysis and multivariate logistic regression were used to eliminate variables with limited predictive ability. Logistic regression was used to establish a predictive model, and a Nomogram was used to predict the incidence rate. All data were analyzed using SPSS version 27.0 and R version 4.2.2 software, and 