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目的 Aninverseassociationbetweensocioeconomicstatusandpulmonaryfunctionhasemergedinmanystudies.However,themediatingfactorsinthisrelationshiparepoorlyunderstood,andmightbeexpectedtodifferbetweencountries.WesoughttoinvestigatetherelationshipbetweensocioeconomicstatusandlungfunctioninChina,arapidlyindustrializingnationwithuniqueenvironmentalchallenges,andtoidentifypotentially-modifiableenvironmentalmediators.