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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),... -
r37980778c78--e4df51b3526d149dea6e8401d7ba20a4
Prevalence of glasses ownership and free glasses acceptance among minority and Han children needing glasses (myopia = +2.0 D or astigmatism > = 0.75 D in both eyes and... -
Ethnic composition and characteristics of children participating in a study o...
Ethnic composition and characteristics of children participating in a study of spectacle use in Guangdong and Yunnan. China (N = 10,037). -
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. -
Logistic regression model of factors potentially affecting baseline spectacle...
Logistic regression model of factors potentially affecting baseline spectacle ownership and acceptance of free glasses among myopic minority and Han children needing glasses... -
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.