selection bias的意思|示意

Propensity scores are used to reduce selection bias by equating groups based on these covariates.

倾向得分通过平衡各组的协变量的方法,用于降低选择偏倚.

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Sample Selection Bias as a Specification Error.

发现并提出“选择性样本”问题.

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Heckman , J . J . ( 1979 ), Sample selection bias as a specification error , Econometrica, 47, 153 - 161.

样本选择偏差, 一看就知道是个很重要的问题嘛, 排名第五, 不算亏待.

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