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. 2020 Apr 16;15(4):e0231439. doi: 10.1371/journal.pone.0231439

Fig 1. Relationship of the requirement for corneal crosslinking (CXL) with age and Rmin at the first visit in multiple logistic regression analysis (left, age; right Rmin).

Fig 1

Left, the relationship between age and requirement for CXL was obtained by logistic multiple regression analysis of data for 58 subjects who underwent CXL (solid circles) and 100 subjects who did not (open circles). The abscissa and ordinate are the logarithmic values of age and CXL probability, respectively. Right, the relationship between Rmin and requirement for CXL obtained through logistic multiple regression analysis. The abscissa and ordinate are logarithmic values of Rmin (mm) and CXL probability, respectively.