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

Table 2. Incidence of CXL according to age and Rmin at the first examination.

26 years or younger 27 years or older
19 years or younger 20–26 years-old
Rmin < 5.73 mm 75.0% 25.0%
86.4% 63.6%
Rmin > 5.73 mm 29.3% 10.8%
38.1% 20.0%

Rmin, the minimum sagittal curvature evaluated by Pentacam®.