问题描述：
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First,scatterplots show that this shift was systematic across areas of these countries,and not due to a few outliers.Second,I obtain essentially similar estimates of malaria coefficients even when controlling for different indicators of health and economic development,or when using corrections for migration or measurement error.Third,I present evidence that these results are not due to mortality selection,the failureto account for general-equilibrium spillovers across cohorts,or the decline of other vector-borne disease
First,scatterplots show that this shift was systematic across areas of these countries,and not due to a few outliers.Second,I obtain essentially similar estimates of malaria coefficients even when controlling for different indicators of health and economic development,or when using corrections for migration or measurement error.Third,I present evidence that these results are not due to mortality selection,the failureto account for general-equilibrium spillovers across cohorts,or the decline of other vector-borne disease
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