2.7. Subgroup Classification
To compare the kinetics of the different initial SCL, we divided the participants into four groups on the basis of the SCL obtained using RRS in the screening week. The SCL obtained from the screening test ranged from approximately 50 AU to 250 AU, and the subgroups were divided into 50 AU intervals (Group 1 (G1): Over 200 AU, Group 2 (G2): 200–150 AU, Group 3 (G3): 150–100 AU, Group 4 (G4): Below 100 AU). In the HG, 5, 8, 14, and 8 participants belonged to groups G1, G2, G3, and G4, respectively. In the CG, 2, 10, 12, and 8 participants belonged to groups G1, G2, G3, and G4, respectively.