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r37980778c78--d0dde6db9bf720faee81399e97c54c68
Effect of randomization group and other potential determinants on observed wear of glasses at endline examination among children needing glasses (Secondary study outcome),... -
Cluster-randomized controlled trial of the effects of free glasses on purchas...
BackgroundOffering free glasses can be important to increase children’s wear. We sought to assess whether “Upgrade glasses” could avoid reduced glasses sales when offering free... -
r37980778c78--1a19340172acd074ebb09a603bfbf123
Values are numbers (percentages) unless stated otherwise. -
Effect of randomization group and other potential determinants on purchase of...
Effect of randomization group and other potential determinants on purchase of glasses prior to endline (main study outcome) adjusting for cluster effects within school.