R language uses the polR function of mass package to build an ordered multi classification logistic regression model, and uses exp function, confint function and coef function to obtain the confidence

R Language use MASS Bag polr Function to build an ordered multi classification logistic The regression model 、 Use exp function 、confint function 、coef Function to get each variable in the model （ The argument changes a unit ） Corresponding odds ratio （odds ratio） The confidence interval of

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