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Table 2 The correlation between nuclear maturation (NM) in GV, MI, and MII oocytes and zona pellucida birefringence intensity (ZP-BF)

From: Evaluation of zona pellucida birefringence intensity during in vitro maturation of oocytes from stimulated cycles

Oocyte stage Score

ZP-BF Score

 

total

high/positive

low/negative

GV

2.4 ± 4.5*

4.0 ± 3.3§

-3.8 ± 2.6

MI

3.0 ± 4.6*

4.7 ± 3.3§

-3.4 ± 2.8

MII

3.3 ± 4.3*

4.8 ± 3.5§

-3.0 ± 1.5

  1. The analysis using the numerical values of the ZP scores. Data are reported as means ± SD.
  2. *P > 0.05; §P > 0.05; P > 0.05