问题描述
我用plm包的plm()成功地估计了一个固定效果模型。现在,我想使用pgmm()来估计具有相同变量的系统gmm,因为我想控制内在性。可悲的是,我不理解pgmm()的参数。
model1.8 <- plm(pmatb$`TB Incidence per 100000 at risk` ~ pmatb$TubercuosisControlLag +pmatb$`Battle Deaths`
+pmatb$CPI
+pmatb$`Polity5(2) Index`
+pmatb$`Basic health care`
+pmatb$`Basic health infrastructure` +pmatb$`Basic nutrition`
+pmatb$`InfectIoUs disease control`
+pmatb$`Health education`
+pmatb$`GDP per Capita`
+pmatb$`Domestic health expenditure per capita`,model = "within",pmatb)
估计系统gmm很棒,但是当我尝试时,我收到了错误消息:
Error in terms.default(formula) : no terms component nor attribute
In addition: Warning messages:
1: use of 'dynformula' is deprecated,use a multi-part formula instead
2: use of 'dynformula' is deprecated,use a multi-part formula instead
我很累:
pgmm(pmatb$`TB Incidence per 100000 at risk`~pmatb$TubercuosisControlLag +pmatb$`Battle Deaths`
+pmatb$CPI
+pmatb$`Polity5(2) Index`
+pmatb$`Basic health care`
+pmatb$`Basic health infrastructure` +pmatb$`Basic nutrition`
+pmatb$`InfectIoUs disease control`
+pmatb$`Health education`
+pmatb$`GDP per Capita`
+pmatb$`Domestic health expenditure per capita`,pmatb,effect = "twoways",model = "onestep",transformation = c("ld")
)
非常感谢您的任何建议
解决方法
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