Figure 1.

Comparison of MPR values between the two groups of patients before and after intervention ($\overline{x}\pm s$). Note. The abscissa represents before intervention and after intervention, and the ordinate represents MPR value (%). The MPR values of the research group were (73.29 ± 8.45)% and (86.25 ± 8.03)%, respectively, before and after intervention. The MPR values of the reference group were (73.32 ± 8.42)% and (77.43 ± 8.06)%, respectively, before and after intervention. ^∗ indicates that there was a significant difference in MPR values in the research group before and after intervention (t = 7.862, P=0.000); ^∗∗ indicates that there was a significant difference in MPR values in the reference group before and after intervention (t = 2.493, P=0.014); and ^∗∗∗ indicates that there was a significant difference in MPR values between the two groups after intervention (t = 5.482, P=0.000).