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Table 5 Using selection on observables to assess the bias from unobservables

From: Does health insurance coverage reduce informal payments? Evidence from the “red envelopes” in China

 SHIPHIIns
NoneGender + AgeNoneGender + AgeNoneGender + Age
Red envelopes−1.07−1.16−1.530.72−0.87−1.03
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