问题描述：
英语翻译
we also reported results for aggregated aid based on the Within-Groups
and OLS (Ordinary Least Squares) estimators for comparison since the
lagged dependent variable estimate for example that is yielded by the
GMM-systems methodology is largely expected to lie between withingroups
and OLS estimates
we also reported results for aggregated aid based on the Within-Groups
and OLS (Ordinary Least Squares) estimators for comparison since the
lagged dependent variable estimate for example that is yielded by the
GMM-systems methodology is largely expected to lie between withingroups
and OLS estimates
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