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Table 3 Nucleolar morphology 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%)
1 134 (56.1) 274 (57.9) 193 (54.5) n.s. 96 (53.0) 230 (56.6) 132 (55.0) n.s.
2 37 (15.5) 65 (13.7) 60 (16.9) n.s. 32 (17.7) 62 (15.3) 37 (15.4) n.s.
3 53 (22.2) 106 (22.4) 86 (24.3) n.s. 41 (22.6) 88 (21.7) 61 (25.4) n.s.
4 15 (6.3) 28 (5.9) 15 (4.2) n.s. 12 (6.6) 26 (6.4) 10 (4.2) n.s.
All zygotes 239 473 354   181 406 240