"在主界面点击Analyze→Regression→Ordinal,在Ordin

"在主界面点击Analyze→Regression→Ordinal,在Ordinal Regression对话框中,将patient_satisfaction选入Dependent,将gender和treatment选入Factor(s),将age和fee选入Covariate(s)"   

为什么要把4个自变量分开放呢?