Relationship between OSA and LPR
In 64 OSA patients, AHI and CT90 have a positive correlation with RSI and RFS, which means the degree of OSA is associated with the severity of LPR (Figure 2A, 2B) . L-SpO2 negatively correlate with RSI and RFS (Figure 2C) . In addition, RSI and RFS scores of severe OSA were higher than mild to moderate OSA patients, so as the prevalence of LPR (Table 2 ).