2.2. Statistical methods
Full analysis set: is the analysis of the efficacy of all cases that were randomized and grouped and applied at least once according to the intentionality analysis (ITT) principle. For cases where the full course of treatment was not observed, data from the last observation could be carried forward to the final study outcome. Follow scenario set analysis (PP): efficacy analysis was performed for all cases that met the study protocol, had good compliance, did not take prohibited medications during the study period, and completed the required fields in the case report form. No missing data were filled in. Statistical analysis of drug efficacy was performed for both full analysis set and PP. All statistical tests were performed using a two-sided test, and a 