请大家帮我看看,用这个命令做盈余管理有没有问题啊,谢谢大家啦
gen lagToSale=l.ToSale
gen ceSale=ToSale-lagToSale
gen lagTA=l.TAsset
gen accrual=NI-operateCash
gen ta=accrual/lagTA
gen daoTAsset=1/ln(TAsset)
gen chgsl=ceSale/lagTA
gen daoFix=PPE/lagTA
by time: reg taw daoTAssetw chgslw daoFixw, noconstant
predict nda, xb
predict da, resid