Skip to main content

Table 2 Pronuclear morphology in zygotes related to the maternal age.

From: Analysis of pronuclear zygote configurations in 459 clinical pregnancies obtained with assisted reproductive technique procedures

Clinical pregnancies Ongoing pregnancies/deliveries
  ≤32 33-37 38-41 O.R. (C.I. 95%) ≤32 33-37 38-41 O.R. (C.I. 95%)
A 172 (72.0) 330 (69.8) 281 (79.4) 0.667 (0.456-0.976)*
0.600
(0.434-0.828)°
125 (69.1) 275 (67.9) 195 (81.2) 0.511
(0.328-0.808)*
0.484
(0.330-0.711)°
B 55 (23.0) 123 (26.0) 53 (15.0) 1.698
(1.118-2.578)*
1.996
(1.398-2.849)°
44 (24.3) 116 (28.3) 34 (14.2) 2.099
(1.278-3.448)*
2.424
(1.592-3.687)°
C 9 (3.8) 11 (2.3) 11 (3.1) n.s. 9 (5.0) 9 (2.2) 8 (3.4) n.s.
D 3 (1.3) 9 (1.9) 9 (2.5) n.s. 3 (1.6) 6 (1.5) 3 (1.2) n.s.
E 0 (0.0) 0 (0.0) 0 (0.0) n.s. 0 (0.0) 0 (0.0) 0 (0.0) n.s.
All zygotes 239 473 354   181 406 240  
  1. * ≤32 vs. 38-41
  2. °33-37 vs. 38-41