Table 5 Spearman rank correlation coefficients between placental anastomosis and branching numbers of placental superficial vessels in cases of smaller twins of normal MCDA (r, (p-value))
AA overall diameter | AV overall diameter | VV overall diameter | All anastomosis overall diameter | ||
|---|---|---|---|---|---|
The number of umbilical arterial branches | 0.097(0.258) | 0.168(0.049) | -0.084(0.408) | 0.116(0.174) | |
The number of umbilical venous branches | -0.030(0.723) | 0.222(0.009) | -0.063(0.537) | 0.093(0.278) | |
The overall number of umbilical vascular branches | 0.043(0.616) | 0.230(0.007) | -0.061(0.550) | 0.134(0.117) | |