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Table 4 Polar body alignment 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%)
α 118 (49.4) 247 (52.2) 165 (46.6) n.s 91 (50.3) 213 (52.5) 111 (46.2) n.s
β 82 (34.3) 147 (31.1) 134 (37.9) 0.740 (0.554-0.989)° 62 (34.2) 123 (30.3) 94 (39.2) 0.675 (0.483-0.943)°
γ 39 (16.3) 79 (16.7) 55 (15.5) n.s 28 (15.5) 70 (17.2) 35 (14.6) n.s.
All zygotes 239 473 354   181 406 240  
  1. °33-37 vs. 38-41