Statistical methods
SPSS 24 software was used for statistical analysis. The distribution of continuous variables was tested for normality using Shapiro‒Wilk tests. Normally distributed data were expressed as the mean ± standard deviation (SD), while nonnormally distributed data were expressed as the median (interquartile range [IQR]). Count data were expressed as numbers. The between-group comparison was performed using an independent t test for normally distributed measurement data and the Mann‒Whitney U test for nonnormally distributed measurement data. Count data were compared using a Pearson chi-square test or Fisher’s exact test. The data were compared using a Pearson chi-square test or Fisher’s exact test.Intention to treat (ITT) was used in this study. Because in the actual clinical work, the medical staff treating the patients in the control group may have received training on the new mode. Inevitably, the medical staff cannot completely reject the new mode in the process of treatment. Therefore, we will use ITT, that is, analysis based on intention to treat (i.e., planned grouping), rather than actual treatment.