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Distributed lag models between PM and primary pterygium. (A) Model 1, (B) Model 2.
Model 1: sociodemographic factors were included as covariates; Model 2: sociodemographic factors, sun exposure, and myopia were included as covariates.
PM10 = particulate matter with aerodynamic diameter less than 10 µm, OR = odds ratio, CI = confidence interval.
*Associated with primary pterygium in multivariate logistic regression.
