foreach var of varlist addedvalue labornum intermediate_input K {
order `var'
gen ln`var' =ln(`var')
}
break
sort year
tsset code year
levpet lnaddedvalue , free(lnlabornum) proxy(lnintermediate_input) capital(lnK)
predict TFP, omega
这是我的命令,有木有问题呢


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