4.1. Principal Findings
RS
This study entailed a whole-diet randomized controlled trial to evaluate the performance of a commercial RS-based spectrophotometer in measuring SCL as compared with RRS. Similar response patterns in the RRS and RS methods were identified using correlation analysis and the ratio of change during the intervention and tracking periods. Before the intervention, the correlation between When comparing the correlation by referring to RRS, the correlation with commercial devices (r = 0.92 to 0.96) in this study was higher than that of RS devices (r = 0.76 to 0.86) developed for SCL measurement [