highly significantp = 0.010
As shown in Table 4 , the intergroup heterogeneity for Hormone type ( I 2 = 91.2%, p < 0.001) and Hormone use status ( I 2 = 97.1%, p < 0.001) were highly significant, and Regions ( I 2 = 92.4%, p = 0.010) was statistically significant.