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PURPOSE: To study the effect of free glasses combined with teacher incentives on in-school glasses wear among Chinese urban migrant children.DESIGN: Cluster-randomized controlled trial.METHODS: Children with visual acuity (VA) £6/12 in either eye owing to refractive error in 94 randomly chosen...
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We use a novel panel with detailed transaction records of more than one million de-identified individuals to study the effect of a large-scale Chinese government-issued digital coupon program on consumer spending. At the core of this stimulus program are a set of salient features that drive the...
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